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Articles de revues sur le sujet « Quantum material »

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Auteur : Grafiati
Publié le 1 avril 2023

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1

Dai, Xian Hua, et Hong Li. « A Survey on Additivity Conjecture ». Applied Mechanics and Materials 203 (octobre 2012) : 497–99. http://dx.doi.org/10.4028/www.scientific.net/amm.203.497.

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Quantum material is one emerging branch of advanced materials. Quantum entanglement is one intrinsic property for quantum material, in particular, in quantum communication. Additivity conjecture is a long standing problem for quantum material to transmit information. This note surveys additivity conjecture in some kinds of forms, and introduces some known results including relations between them.
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JUNG, Suyong, Junho SUH et Yong-Sung KIM. « Quantum Material Metrology based on Nanoscale Quantum Devices ». Physics and High Technology 28, no 11 (30 novembre 2019) : 8–14. http://dx.doi.org/10.3938/phit.28.044.

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3

Yu Xiang-Min, Tan Xin-Sheng, Yu Hai-Feng et Yu Yang. « Topological quantum material simulated with superconducting quantum circuits ». Acta Physica Sinica 67, no 22 (2018) : 220302. http://dx.doi.org/10.7498/aps.67.20181857.

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4

Castelletto, Stefania, Faraz A. Inam, Shin-ichiro Sato et Alberto Boretti. « Hexagonal boron nitride : a review of the emerging material platform for single-photon sources and the spin–photon interface ». Beilstein Journal of Nanotechnology 11 (8 mai 2020) : 740–69. http://dx.doi.org/10.3762/bjnano.11.61.

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Single-photon sources and their optical spin readout are at the core of applications in quantum communication, quantum computation, and quantum sensing. Their integration in photonic structures such as photonic crystals, microdisks, microring resonators, and nanopillars is essential for their deployment in quantum technologies. While there are currently only two material platforms (diamond and silicon carbide) with proven single-photon emission from the visible to infrared, a quantum spin–photon interface, and ancilla qubits, it is expected that other material platforms could emerge with similar characteristics in the near future. These two materials also naturally lead to monolithic integrated photonics as both are good photonic materials. While so far the verification of single-photon sources was based on discovery, assignment and then assessment and control of their quantum properties for applications, a better approach could be to identify applications and then search for the material that could address the requirements of the application in terms of quantum properties of the defects. This approach is quite difficult as it is based mostly on the reliability of modeling and predicting of color center properties in various materials, and their experimental verification is challenging. In this paper, we review some recent advances in an emerging material, low-dimensional (2D, 1D, 0D) hexagonal boron nitride (h-BN), which could lead to establishing such a platform. We highlight the recent achievements of the specific material for the expected applications in quantum technologies, indicating complementary outstanding properties compared to the other 3D bulk materials.
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de Graaf, S. E., S. Un, A. G. Shard et T. Lindström. « Chemical and structural identification of material defects in superconducting quantum circuits ». Materials for Quantum Technology 2, no 3 (19 juillet 2022) : 032001. http://dx.doi.org/10.1088/2633-4356/ac78ba.

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Abstract Quantum circuits show unprecedented sensitivity to external fluctuations compared to their classical counterparts, and it can take as little as a single atomic defect somewhere in a mm-sized area to completely spoil device performance. For improved device coherence it is thus essential to find ways to reduce the number of defects, thereby lowering the hardware threshold for achieving fault-tolerant large-scale error-corrected quantum computing. Given the evasive nature of these defects, the materials science required to understand them is at present in uncharted territories, and new techniques must be developed to bridge existing capabilities from materials science with the needs identified by the superconducting quantum circuit community. In this paper, we give an overview of methods for characterising the chemical and structural properties of defects in materials relevant for superconducting quantum circuits. We cover recent developments from in-operation techniques, where quantum circuits are used as probes of the defects themselves, to in situ analysis techniques and well-established ex situ materials analysis techniques. The latter is now increasingly explored by the quantum circuits community to correlate specific material properties with qubit performance. We highlight specific techniques which, given further development, look especially promising and will contribute towards a future toolbox of material analysis techniques for quantum.
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Zhang, Jie-Yin, Fei Gao et Jian-Jun Zhang. « Research progress of silicon and germanium quantum computing materials ». Acta Physica Sinica 70, no 21 (2021) : 217802. http://dx.doi.org/10.7498/aps.70.20211492.

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Semiconductor quantum dot is one of the promising ways to realize solid-state quantum computing. The key is to obtain high-quality semiconductor quantum computing materials. Silicon and germanium can be isotopically purified to achieve nuclear spin-free isotopes, meeting the requirement for long decoherence time. They are also compatible with the current CMOS technology, thus making them ideal material platforms for large scale integration. This review first summarizes the important progress of semiconductor quantum-dot quantum computing in recent years, then focuses on the material progress including the silicon-based Si/SiGe heterostructures, Ge/SiGe heterostructures, and Ge/Si one-dimensional wires, finally presents the outlook about the development of silicon and Ge quantum computing materials.
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Yang, HeeBong, et Na Young Kim. « Material-Inherent Noise Sources in Quantum Information Architecture ». Materials 16, no 7 (23 mars 2023) : 2561. http://dx.doi.org/10.3390/ma16072561.

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NISQ is a representative keyword at present as an acronym for “noisy intermediate-scale quantum”, which identifies the current era of quantum information processing (QIP) technologies. QIP science and technologies aim to accomplish unprecedented performance in computation, communications, simulations, and sensing by exploiting the infinite capacity of parallelism, coherence, and entanglement as governing quantum mechanical principles. For the last several decades, quantum computing has reached to the technology readiness level 5, where components are integrated to build mid-sized commercial products. While this is a celebrated and triumphant achievement, we are still a great distance away from quantum-superior, fault-tolerant architecture. To reach this goal, we need to harness technologies that recognize undesirable factors to lower fidelity and induce errors from various sources of noise with controllable correction capabilities. This review surveys noisy processes arising from materials upon which several quantum architectures have been constructed, and it summarizes leading research activities in searching for origins of noise and noise reduction methods to build advanced, large-scale quantum technologies in the near future.
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Pan, Xing-Chen, Xuefeng Wang, Fengqi Song et Baigeng Wang. « The study on quantum material WTe2 ». Advances in Physics : X 3, no 1 (janvier 2018) : 1468279. http://dx.doi.org/10.1080/23746149.2018.1468279.

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9

Patrick, Chris. « Lasers advance 2D quantum material manufacturing ». Scilight 2019, no 25 (21 juin 2019) : 250014. http://dx.doi.org/10.1063/1.5115490.

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10

Bogdanov, S., M. Y. Shalaginov, A. Boltasseva et V. M. Shalaev. « Material platforms for integrated quantum photonics ». Optical Materials Express 7, no 1 (8 décembre 2016) : 111. http://dx.doi.org/10.1364/ome.7.000111.

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11

Zhao, Weigang, Cuirong Liu et Xu Yin. « Cs4PbBr6 Combined with Graphite as Anode for High-Performance Lithium Batteries ». Metals 12, no 10 (23 septembre 2022) : 1584. http://dx.doi.org/10.3390/met12101584.

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Cs4PbBr6 quantum dots are glass-based materials. The perovskite structural material of Cs4PbBr6 quantum dots has shown an unexpected electronic performance. However, the glass-based Cs4PbBr6 quantum dots’ capacity becomes weaker when running in charge/discharge. Here, graphite was introduced to Cs4PbBr6 quantum dots using the grinding method to enhance the cycling stability of Cs4PbBr6 quantum dots. The 10%, 25%, 35%, 40%, 75% content Cs4PbBr6 quantum dots were added to graphite (CQDs/G) and CQDs/G as an active material for lithium anode in electronic testing. The test results displayed 35% Cs4PbBr6 quantum dots content in CQDs/G, showing an excellent cycle performance (136.5 mAh g−1 after 1000 cycles at 0.5 A g−1 current density) and good rate ability. Graphite protected the CQDs in the long term, and has high potential economic value.
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12

Wang, Yuhao. « CsPbX3 Perovskite Quantum Dot Laser ». Highlights in Science, Engineering and Technology 27 (27 décembre 2022) : 334–42. http://dx.doi.org/10.54097/hset.v27i.3775.

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Quantum dot laser, which is well known as the 3rd generation of semiconductor laser, has attracted extensive attention of researchers in recent years. Compared with typical semiconductor laser, quantum dot exhibits the characteristics of low threshold, large laser gain, tunable bandgap, which make it promising for laser applications. Among the various quantum dot lasers, perovskite quantum dot laser is one superior type. Perovskite is a group of material with the structure of ABX3. This group of material is commonly used in solar cell and light emitting device such as perovskite quantum dot blue emitting diode, due to its excellent optical properties of narrow linewidth and high luminance. The perovskite quantum is also found to be a good material of laser gain material. Among all classes of perovskite, CsPbX3 has become an expected material for perovskite quantum dot laser. This work will conclude the theory of quantum dot laser and properties of CsPbX3 quantum dot laser based on current papers and reports.
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13

Barkoutsos, Panagiotis Kl, Fotios Gkritsis, Pauline J. Ollitrault, Igor O. Sokolov, Stefan Woerner et Ivano Tavernelli. « Quantum algorithm for alchemical optimization in material design ». Chemical Science 12, no 12 (2021) : 4345–52. http://dx.doi.org/10.1039/d0sc05718e.

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‘Alchemical’ quantum algorithm for the simultaneous optimisation of chemical composition and electronic structure for material design. By exploiting quantum mechanical principles this approach will boost drug discovery in the near future.
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14

Yang, Cheng, Guangcan Wang, Maomao Liu, Fei Yao et Huamin Li. « Mechanism, Material, Design, and Implementation Principle of Two-Dimensional Material Photodetectors ». Nanomaterials 11, no 10 (12 octobre 2021) : 2688. http://dx.doi.org/10.3390/nano11102688.

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Two-dimensional (2D) materials may play an important role in future photodetectors due to their natural atom-thin body thickness, unique quantum confinement, and excellent electronic and photoelectric properties. Semimetallic graphene, semiconductor black phosphorus, and transition metal dichalcogenides possess flexible and adjustable bandgaps, which correspond to a wide interaction spectrum ranging from ultraviolet to terahertz. Nevertheless, their absorbance is relatively low, and it is difficult for a single material to cover a wide spectrum. Therefore, the combination of phototransistors based on 2D hybrid structures with other material platforms, such as quantum dots, organic materials, or plasma nanostructures, exhibit ultra-sensitive and broadband optical detection capabilities that cannot be ascribed to the individual constituents of the assembly. This article provides a comprehensive and systematic review of the recent research progress of 2D material photodetectors. First, the fundamental detection mechanism and key metrics of the 2D material photodetectors are introduced. Then, the latest developments in 2D material photodetectors are reviewed based on the strategies of photocurrent enhancement. Finally, a design and implementation principle for high-performance 2D material photodetectors is provided, together with the current challenges and future outlooks.
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15

Cahaya, Adam Badra. « Paramagnetic and Diamagnetic Susceptibility of Infinite Quantum Well ». Al-Fiziya : Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics 3, no 2 (31 décembre 2020) : 61–67. http://dx.doi.org/10.15408/fiziya.v3i2.18119.

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Paramagnetism and diamagnetism of a material characterized by its magnetic susceptibility. When a material is exposed to an external magnetic field, magnetic susceptibility is defined as the ratio of the induced magnetization and the magnetic field. A paramagnetic material has magnetic susceptibility with positive sign. On the other hand, a diamagnetic material has magnetic susceptibility with negative sign. Atomically, paramagnetic materials consist of atoms that has orbital with unpaired electrons. Theoretical study of paramagnetic susceptibility and diamagnetic susceptibility are well described by Pauli paramagnetism and Landau diamagnetism, respectively. Although paramagnetism and diamagnetism are among the simplest magnetic properties of material that are studied in basic physics, theoretical derivations of Pauli paramagnetic and Landau diamagnetic susceptibility require second quantization formalism of quantum mechanics. We aim to discuss the paramagnetic and diamagnetic susceptibilities for simple three-dimensional quantum well using first quantization formalism.
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16

Broholm, C., R. J. Cava, S. A. Kivelson, D. G. Nocera, M. R. Norman et T. Senthil. « Quantum spin liquids ». Science 367, no 6475 (16 janvier 2020) : eaay0668. http://dx.doi.org/10.1126/science.aay0668.

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Spin liquids are quantum phases of matter with a variety of unusual features arising from their topological character, including “fractionalization”—elementary excitations that behave as fractions of an electron. Although there is not yet universally accepted experimental evidence that establishes that any single material has a spin liquid ground state, in the past few years a number of materials have been shown to exhibit distinctive properties that are expected of a quantum spin liquid. Here, we review theoretical and experimental progress in this area.
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17

Zhong, Tian, et Philippe Goldner. « Emerging rare-earth doped material platforms for quantum nanophotonics ». Nanophotonics 8, no 11 (27 septembre 2019) : 2003–15. http://dx.doi.org/10.1515/nanoph-2019-0185.

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AbstractRare-earth dopants are arguably one of the most studied optical centers in solids, with applications spanning from laser optoelectronics, biosensing, lighting to displays. Nevertheless, harnessing rare-earth dopants’ extraordinary coherence properties for quantum information technologies is a relatively new endeavor, and has been rapidly advancing in recent years. Leveraging the state-of-the-art photonic technologies, on-chip rare-earth quantum devices functioning as quantum memories, single photon sources and transducers have emerged, often with potential performances unrivaled by other solid-state quantum technologies. These existing quantum devices, however, nearly exclusively rely on macroscopic bulk materials as substrates, which may limit future scalability and functionalities of such quantum systems. Thus, the development of new platforms beyond single crystal bulk materials has become an interesting approach. In this review article, we summarize the latest progress towards nanoscale, low-dimensional rare-earth doped materials for enabling next generation rare-earth quantum devices. Different platforms with a variety of synthesis methods are surveyed. Their key metrics measured to date are presented and compared. Special attention is placed on the connection between the topology of each platform to its target device applications. Lastly, an outlook for near term prospects of these platforms are given, with a hope to spur broader interests in rare-earth doped materials as a promising candidate for quantum information technologies.
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18

Rau, Jeffrey G., et Michel J. P. Gingras. « Frustrated Quantum Rare-Earth Pyrochlores ». Annual Review of Condensed Matter Physics 10, no 1 (10 mars 2019) : 357–86. http://dx.doi.org/10.1146/annurev-conmatphys-022317-110520.

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In this review, we provide an introduction to the physics of a series of frustrated quantum rare-earth pyrochlores. We first give a background on the microscopic single- and two-ion physics of these materials, discussing the origins and properties of their exchange interactions and their minimal low-energy effective models before outlining what is known about their classical and quantum phases. We then make use of this understanding to discuss four important material examples, Er2Ti2O7, Yb2Ti2O7, Tb2Ti2O7, and Pr2Zr2O7, covering in some detail what is known experimentally and theoretically for each and then summarizing some key questions that remain open. Finally, we offer an outlook on some alternative material platforms for realizing similar physics and discuss what we see as prospects for future investigations on these quantum rare-earth pyrochlores.
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19

Scappucci, Giordano. « Quantum-Ready Germanium and Silicon ». ECS Meeting Abstracts MA2022-02, no 32 (9 octobre 2022) : 1204. http://dx.doi.org/10.1149/ma2022-02321204mtgabs.

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The semiconductor industry knows how to make and integrate billions of excellent transistors. What materials do we need to integrate excellent qubits at large scale for the quantum information age of tomorrow? What are the properties that we search in these materials to make them quantum-ready? I will focus on isotopically-engineered, strained silicon-germanium heterostructures enabling high-performance hole spin-qubits in germanium and electron spin qubits in silicon. In particular, I will make a case for the germanium quantum information route [1]. Germanium is emerging as a versatile material to realize devices capable of encoding, processing and transmitting quantum information. I will examine the materials science progress underpinning germanium-based planar heterostructures, review our most significant experimental results demonstrating key building blocks for quantum technology, and identify the most promising avenues toward scalable quantum information processing in germanium-based systems. [1] G. Scappucci et al, The germanium quantum information route, Nat Rev Mater (2020). https://doi.org/10.1038/s41578-020-00262-z Figure 1
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Ploog, Klaus H. « Molecular Beam Epitaxy of Materials Interfaces with Atomic Precision ». Физика и техника полупроводников 52, no 5 (2018) : 513. http://dx.doi.org/10.21883/ftp.2018.05.45857.46.

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AbstractIn this contribution a few selected examples to engineer material interfaces in nanostructured solids with atomic precision by means of molecular beam epitaxy (MBE) are presented. The examples include 2D electron gas systems for quantum transport and mesoscopic physics, quantum cascade lasers, Sb-based materials, ferromagnet-semiconductor heterostructures, as well as oxide materials for electronics and quantum physics. Finally, the prospects to fabricate novel van-der-Waals heterostructures are briefly discussed.
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Ma, Xi Ying. « Fabrication of Ferromagnetic Ge Quantum Dots Material ». Advanced Materials Research 531 (juin 2012) : 71–74. http://dx.doi.org/10.4028/www.scientific.net/amr.531.71.

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GeMn magnetic quantum dots (QDs) material were grown with a GeH4/Ar mixed gas under a constant flowing at 400°C by means of plasma enhanced chemical vapor deposition (PECVD) process, then doped with Mn doped using magnetic sputtering technique and annealed at 600 C. The QDs with a Ge0.88Mn0.12 structure derived from the energy spectrum show a wide opening hysteresis loops with a large remnant magnetizations Mr are 0.1410-4 and 0.2510-4 emu/g for the as grown and the annealed samples. Moreover, the magnetic QDs show high quality voltage-current (I-V) and voltage-capacitance (C-V) properties. The magnetic GeMn QDs can be used to fabrication electromagnetic devices.
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OHTANI, Keita, et Hideo OHNO. « Semiconductor Material Systems for Quantum Cascade Lasers ». Review of Laser Engineering 36, no 2 (2008) : 70–74. http://dx.doi.org/10.2184/lsj.36.70.

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Adams, Sarah K., Nicholas W. Piekiel, Matthew H. Ervin et Christopher J. Morris. « Silicon quantum dots for energetic material applications ». Applied Physics Letters 112, no 23 (4 juin 2018) : 233108. http://dx.doi.org/10.1063/1.5022587.

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de Waele, A. Th A. M., R. T. M. Smokers, R. W. van der Heijden, K. Kadowaki, Y. K. Huang, M. van Sprang et A. A. Menovsky. « Macroscopic quantum phenomena in high-Tcsuperconducting material ». Physical Review B 35, no 16 (1 juin 1987) : 8858–60. http://dx.doi.org/10.1103/physrevb.35.8858.

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Shim, Yun-Pil, Rusko Ruskov, Hilary M. Hurst et Charles Tahan. « Induced quantum dot probe for material characterization ». Applied Physics Letters 114, no 15 (15 avril 2019) : 152105. http://dx.doi.org/10.1063/1.5053756.

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Zhao, Jia, Xiao Yu Zhang, Yu Zhang, Yi Feng, Tie Qiang Zhang et Yi Ding Wang. « Quantum Dot Array LED Research with ZnO as an Electron Transport Layer ». Applied Mechanics and Materials 333-335 (juillet 2013) : 1895–98. http://dx.doi.org/10.4028/www.scientific.net/amm.333-335.1895.

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As a new light-emitting material, quantum dot having the advantages of other materials that can not be replaced. It is not only the fluorescence quantum yield, and light stability. Therefore, we use CdSe core-shell structure of the quantum dot LED devices as the electron-hole recombination layer. In this paper, we synthesized emission peak is located at 588nm CdSe core-shell quantum dots, and made array display LED devices with ZnO as the electron transport layer.
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Myers-Ward, Rachael L., Karl D. Hobart, Kevin M. Daniels, Alex J. Giles, Marko J. Tadjer, Lunet E. Luna, Francis J. Kub et al. « Processing of Cavities in SiC Material for Quantum Technologies ». Materials Science Forum 924 (juin 2018) : 905–8. http://dx.doi.org/10.4028/www.scientific.net/msf.924.905.

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Quantum technology is a field of significant interest that will benefit many applications including communications and sensing. SiC is a promising material for quantum applications such as quantum memories, due to point defects, specifically VSi, in the material, which result in long spin coherence times. We have found that no VSiare present in our epitaxially grown unintentionally and nitrogen-doped 4H-SiC with electron concentrations ranging from 1014to 1018cm-3. We create these vacancies using electron irradiation, in concentrations from single defects to ensembles. To utilize the defect luminescence for realistic applications, we have fabricated the SiC into photonic crystal arrays. We present the processing steps required to create photonic crystal cavities in SiC and subsequent challenges.
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Yuqiu, Qu, Zhang Liuyang, An Limin et Wei Hong. « Investigation on photoluminescence quenching of CdSe/ZnS quantum dots by organic charge transporting materials ». Materials Science-Poland 33, no 4 (1 décembre 2015) : 709–13. http://dx.doi.org/10.1515/msp-2015-0120.

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AbstractThe effect of different organic charge transporting materials on the photoluminescence of CdSe/ZnS core/shell quantum dots has been studied by means of steady-state and time-resolved photoluminescence spectroscopy. With an increase in concentration of the organic charge transporting material in the quantum dots solutions, the photoluminescence intensity of CdSe/ZnS quantum dots was quenched greatly and the fluorescence lifetime was shortened gradually. The quenching efficiency of CdSe/ZnS core/shell quantum dots decreased with increasing the oxidation potential of organic charge transporting materials. Based on the analysis, two pathways in the photoluminescence quenching process have been defined: static quenching and dynamic quenching. The dynamic quenching is correlated with hole transporting from quantum dots to the charge transporting materials.
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RUFO, SALVADOR, MITRA DUTTA et MICHAEL A. STROSCIO. « THE INFLUENCE OF ENVIRONMENTAL EFFECTS ON THE ACOUSTIC PHONON SPECTRA IN QUANTUM-DOT HETEROSTRUCTURES ». International Journal of High Speed Electronics and Systems 12, no 04 (décembre 2002) : 1147–58. http://dx.doi.org/10.1142/s0129156402001964.

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We present calculations of the acoustic phonon spectra for a variety of quantum dots and consider the cases where the quantum dots are both free-standing and embedded in a selection of different matrix materials — including semiconductors, plastic, and water. These results go beyond previous calculations for free-standing quantum dots and demonstrate that the matrix material can have a large effect on the acoustic phonon spectrum and consequently on a variety of phonon-assisted transitions in quantum-dot heterostructures.
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Modayil Korah, Mani, Tejaswi Nori, Sefaattin Tongay et Matthew D. Green. « Harnessing biological applications of quantum materials : opportunities and precautions ». Journal of Materials Chemistry C 8, no 31 (2020) : 10498–525. http://dx.doi.org/10.1039/d0tc02429e.

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Biological applications of quantum materials require an intimate material-biology interface. Thus, parallel toxicological studies should be performed so that biological interactions can be considered as a separate and critical performance attribute.
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Skopec, Robert, Dubnik Dubnik et Slovakia Slovakia. « Quantum Resourrection : Quantum Algorithm With Complex Conjugation Reverses Phases of The Wave Function Components ». Neuroscience and Neurological Surgery 4, no 2 (2 juillet 2019) : 01–06. http://dx.doi.org/10.31579/2578-8868/062.

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Light is a powerful tool to manipulate matter, but existing approaches often necessitate focused, high-intensity light that limits the manipulated object’s shape, material and size. The breakthrough development could lead to spacecraft without fuel. What if a spacecraft could travel through our solar system powered and accelerated using only light? That’s the goal of new research coming out of Caltech. More federal spending on directed energy weapon research & development has some stakeholders looking for operational systems to deploy in the next two or three years. The weapons which use focused energy in the forms of lasers, microwaves and other methods against targets ranging from drone swarms to ballistic missiles have long drawn the interest of the Department of Defense and its military services but have previously been relegated largely to the arena of the theoretical. They have artificially created a state that evolves in a direction opposite that of the thermodynamic arrow of time. Scientists have reversed the direction of time with a quantum computer.
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RODRIGUES, P. A. M., HILDA A. CERDEIRA et F. CERDEIRA. « FIRST ORDER RAMAN SCATTERING FROM SEMICONDUCTOR QUANTUM DOTS ». International Journal of Modern Physics B 03, no 08 (août 1989) : 1167–81. http://dx.doi.org/10.1142/s0217979289000804.

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We develop a model appropriate for describing the Raman spectrum of samples, containing a collection of semiconductor quantum dots with and without dispersion in their linear dimensions. These nanometer size crystallites are assumed to have the same atomic arrangement as that of the bulk material and to be embedded in a host material made up of a different semiconductor of the same crystal structure. The results from our calculations are compared to previous models for polycrystalline materials.
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Douhan, Rahaf, Kirill Lozovoy, Andrey Kokhanenko, Hazem Deeb, Vladimir Dirko et Kristina Khomyakova. « Recent Advances in Si-Compatible Nanostructured Photodetectors ». Technologies 11, no 1 (24 janvier 2023) : 17. http://dx.doi.org/10.3390/technologies11010017.

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In this review the latest advances in the field of nanostructured photodetectors are considered, stating the types and materials, and highlighting the features of operation. Special attention is paid to the group-IV material photodetectors, including Ge, Si, Sn, and their solid solutions. Among the various designs, photodetectors with quantum wells, quantum dots, and quantum wires are highlighted. Such nanostructures have a number of unique properties, that made them striking to scientists’ attention and device applications. Since silicon is the dominating semiconductor material in the electronic industry over the past decades, and as germanium and tin nanostructures are very compatible with silicon, the combination of these factors makes them the promising candidate to use in future technologies.
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Gong, Tao, Matthew R. Corrado, Ahmed R. Mahbub, Calum Shelden et Jeremy N. Munday. « Recent progress in engineering the Casimir effect – applications to nanophotonics, nanomechanics, and chemistry ». Nanophotonics 10, no 1 (24 septembre 2020) : 523–36. http://dx.doi.org/10.1515/nanoph-2020-0425.

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AbstractQuantum optics combines classical electrodynamics with quantum mechanics to describe how light interacts with material on the nanoscale, and many of the tricks and techniques used in nanophotonics can be extended to this quantum realm. Specifically, quantum vacuum fluctuations of electromagnetic fields experience boundary conditions that can be tailored by the nanoscopic geometry and dielectric properties of the involved materials. These quantum fluctuations give rise to a plethora of phenomena ranging from spontaneous emission to the Casimir effect, which can all be controlled and manipulated by changing the boundary conditions for the fields. Here, we focus on several recent developments in modifying the Casimir effect and related phenomena, including the generation of torques and repulsive forces, creation of photons from vacuum, modified chemistry, and engineered material functionality, as well as future directions and applications for nanotechnology.
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HESS, KARL, WALTER PHILIPP et MANUEL ASCHWANDEN. « WHAT IS QUANTUM INFORMATION ? » International Journal of Quantum Information 04, no 04 (août 2006) : 585–625. http://dx.doi.org/10.1142/s0219749906002080.

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The main purpose of this review is to deal with questions related to the nature of quantum information and particularly with quantum entanglement as an important component of quantum information and computing. We will not discuss here quantum computer algorithms, like the algorithm by Shor, or their advantages and disadvantages. We only cover the material that lies at the foundations of quantum information and computing and epistemological questions. We attempt to connect the famous debate between Einstein and Bohr on quantum entanglement to some of the latest work on qubits and quantum computing and to the mathematical theorems that form the basis of these discussions, particularly the theorem of Bell. We present a critical analysis of this material and hope that this will give the reader a better understanding of what can be said with certainty about the nature of quantum information.
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S, Ankit, Shilpa Thakur et Surbhi Sharma. « Biomedical applications of single-particle based material : quantum dots ». International Journal of Radiology & ; Radiation Therapy 9, no 4 (14 octobre 2022) : 121–27. http://dx.doi.org/10.15406/ijrrt.2022.09.00334.

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Quantum dots are artificial "droplets" of charge that might include a single electron or a group of thousands. Their normal sizes range from nanometres to a few microns, and employing cutting-edge nanofabrication technology, it is possible to precisely regulate their size, shape, and interactions. These special qualities have drawn a lot of interest in the biomedical community recently because they make it possible for real-time tissue imaging (bioimaging), diagnostics, single molecule probes, and medication administration, among many other applications. Due to their high brightness, photo bleach resistance, multiplexing ability, and high surface-to-volume ratio, quantum dots are ideal candidates for intracellular tracking, diagnostics, in vivo imaging, and therapeutic delivery. The optical properties of quantum dots can be tuned by size and composition. In the current paper, we will review properties, preparation, characteristics as well as biomedical applications. In addition, some issues along with future aspects. Furthermore, several commercially accessible alternatives are technically contrasted with QDs. Finally, we suggest technical factors that must be considered to enhance the clinical outcome of QDs.
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Vukotic, Veselin. « Quantum economics ». Panoeconomicus 58, no 2 (2011) : 267–76. http://dx.doi.org/10.2298/pan1102267v.

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The globalization is breaking-down the idea of national state, which was the base for the development of economic theory which is dominant today. Global economic crisis puts emphasis on limited possibilities of national governments in solving economic problems and general problems of society. Does it also mean that globalization and global economic crisis points out the need to think about new economic theory and new understanding of economics? In this paper I will argue that globalization reveals the need to change dominant economic paradigm - from traditional economic theory (mainstream) with macroeconomic stability as the goal of economic policy, to the ?quantum economics?, which is based on ?economic quantum? and immanent to the increase of wealth (material and non-material) of every individual in society and promoting set of values immanent to the wealth increase as the goal of economic policy. Practically the question is how we can use global market for our development!
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Haws, Cori, Biswarup Guha, Edgar Perez, Marcelo Davanco, Jin Dong Song, Kartik Srinivasan et Luca Sapienza. « Thermal release tape-assisted semiconductor membrane transfer process for hybrid photonic devices embedding quantum emitters ». Materials for Quantum Technology 2, no 2 (19 avril 2022) : 025003. http://dx.doi.org/10.1088/2633-4356/ac603e.

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Abstract The ability to combine different materials enables a combination of complementary properties and device engineering that cannot be found or exploited within a single material system. In the realm of quantum nanophotonics, one might want to increase device functionality by, for instance, combining efficient classical and quantum light emission available in III–V semiconductors, low-loss light propagation accessible in silicon-based materials, fast electro-optical properties of lithium niobate, and broadband reflectors and/or buried metallic contacts for local electric field application or electrical injection of emitters. However, combining different materials on a single wafer is challenging and may result in low reproducibility and/or low yield. For instance, direct epitaxial growth requires crystal lattice matching for producing of defect-free films, and wafer bonding requires considerable and costly process development for high bond strength and yield. We propose a transfer printing technique based on the removal of arrays of free-standing membranes and their deposition onto a host material using a thermal release adhesive tape-assisted process. This approach is versatile, in that it poses limited restrictions on the transferred and host materials. In particular, we transfer 190 nm-thick GaAs membranes that contain InAs quantum dots and which have dimensions up to about 260 μm × 80 μm onto a gold-coated silicon substrate. We show that the presence of a back reflector combined with the etching of micropillars significantly increases the extraction efficiency of quantum light from a single quantum dot line, reaching photon fluxes exceeding 8 × 105 photons per second. This flux is four times higher than the highest count rates measured from emitters outside the pillars on the same chip. Given its versatility and ease of processing, this technique provides a path to realising hybrid quantum nanophotonic devices that combine virtually any material in which free-standing membranes can be made onto any host substrate, without specific compatibility issues and/or requirements.
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Sreckovic, Milesa, Stanko Ostojic, Jelena Ilic, Zoran Fidanovski, Sanja Jevtic, Dragan Knezevic et Marija Obrenovic. « Photoinduced processes, radiation interaction with material and damages - material hardness ». Nuclear Technology and Radiation Protection 30, no 1 (2015) : 23–34. http://dx.doi.org/10.2298/ntrp1501023s.

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Photo and nuclear radiation induced processes are considered through the interaction of radiation with semiconducting, metallic and other materials, including the scintillator materials. The improvement of component efficiency by the use of quantum generators, trimming and hybrid processes with nuclear radiation has been analyzed. The studied processes can be positive or negative depending on application. Besides the experimental approach to the processes and chosen interactions, the analytical description of our experiments, as well as ones from other references, has been performed. The contemporary couplings between the nuclear physics, laser techniques and respective dosimetric aspects have been considered.
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Khan, Mohammed Zahed Mustafa, Tien Khee Ng et Boon S. Ooi. « Self-assembled InAs/InP quantum dots and quantum dashes : Material structures and devices ». Progress in Quantum Electronics 38, no 6 (novembre 2014) : 237–313. http://dx.doi.org/10.1016/j.pquantelec.2014.11.001.

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Deng, Hongshan, Jianbo Zhang, Min Yong Jeong, Dong Wang, Qingyang Hu, Shuai Zhang, Raimundas Sereika et al. « Metallization of Quantum Material GaTa4Se8 at High Pressure ». Journal of Physical Chemistry Letters 12, no 23 (10 juin 2021) : 5601–7. http://dx.doi.org/10.1021/acs.jpclett.1c01069.

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Mitchell, M. W., M. Koschorreck, M. Kubasik, M. Napolitano et R. J. Sewell. « Certified quantum non-demolition measurement of material systems ». New Journal of Physics 14, no 8 (24 août 2012) : 085021. http://dx.doi.org/10.1088/1367-2630/14/8/085021.

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Schaevitz, Rebecca K., Jonathan E. Roth, Shen Ren, Onur Fidaner et David A. B. Miller. « Material Properties of Si-Ge/Ge Quantum Wells ». IEEE Journal of Selected Topics in Quantum Electronics 14, no 4 (2008) : 1082–89. http://dx.doi.org/10.1109/jstqe.2008.918935.

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Craco, L., et S. Leoni. « Electrodynamics and quantum capacity of LixFePO4 battery material ». Applied Physics Letters 99, no 19 (7 novembre 2011) : 192103. http://dx.doi.org/10.1063/1.3660247.

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Choi, K. K., C. J. Chen et D. C. Tsui. « Corrugated quantum well infrared photodetectors for material characterization ». Journal of Applied Physics 88, no 3 (août 2000) : 1612–23. http://dx.doi.org/10.1063/1.373862.

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Gordeev, Nikita Yu, Mikhail V. Maximov, Alexey S. Payusov, Artem A. Serin, Yuri M. Shernyakov, Sergey A. Mintairov, Nikolay A. Kalyuzhnyy, Alexey M. Nadtochiy et Alexey E. Zhukov. « Material gain of InGaAs/GaAs quantum well-dots ». Semiconductor Science and Technology 36, no 1 (13 novembre 2020) : 015008. http://dx.doi.org/10.1088/1361-6641/abc51d.

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Belloni, Mario, Wolfgang Christian et Douglas Brown. « Open Source Physics Curricular Material for Quantum Mechanics ». Computing in Science & ; Engineering 9, no 4 (juillet 2007) : 24–31. http://dx.doi.org/10.1109/mcse.2007.80.

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Finkman, E., S. Maimon, V. Immer, G. Bahir, S. E. Schacham, O. Gauthier-Lafaye, S. Herriot, F. H. Julien, M. Gendry et J. Brault. « Quantum dot infrared photodetectors in new material systems ». Physica E : Low-dimensional Systems and Nanostructures 7, no 1-2 (avril 2000) : 139–45. http://dx.doi.org/10.1016/s1386-9477(99)00266-0.

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Donaldson, Laurie. « Rediscovered material has superconductivity useful for quantum computing ». Materials Today 32 (janvier 2020) : 2. http://dx.doi.org/10.1016/j.mattod.2019.12.023.

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Earman, John. « Quantum sidelights on The Material Theory of Induction ». Studies in History and Philosophy of Science Part A 82 (août 2020) : 9–16. http://dx.doi.org/10.1016/j.shpsa.2019.08.002.

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