Articles de revues : « Quantum illumination »

1

Benka, Stephen G. « Quantum illumination ». Physics Today 66, n^o 7 (juillet 2013) : 18. http://dx.doi.org/10.1063/pt.3.2036.

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Browne, D. « Quantum Illumination ». Science 340, n^o 6138 (13 juin 2013) : 1290. http://dx.doi.org/10.1126/science.1238809.

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Shapiro, Jeffrey H. « The Quantum Illumination Story ». IEEE Aerospace and Electronic Systems Magazine 35, n^o 4 (1 avril 2020) : 8–20. http://dx.doi.org/10.1109/maes.2019.2957870.

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Gregory, T., P. A. Moreau, E. Toninelli et M. J. Padgett. « Imaging through noise with quantum illumination ». Science Advances 6, n^o 6 (février 2020) : eaay2652. http://dx.doi.org/10.1126/sciadv.aay2652.

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The contrast of an image can be degraded by the presence of background light and sensor noise. To overcome this degradation, quantum illumination protocols have been theorized that exploit the spatial correlations between photon pairs. Here, we demonstrate the first full-field imaging system using quantum illumination by an enhanced detection protocol. With our current technology, we achieve a rejection of background and stray light of up to 5.8 and also report an image contrast improvement up to a factor of 11, which is resilient to both environmental noise and transmission losses. The quantum illumination protocol differs from usual quantum schemes in that the advantage is maintained even in the presence of noise and loss. Our approach may enable laboratory-based quantum imaging to be applied to real-world applications where the suppression of background light and noise is important, such as imaging under low photon flux and quantum LIDAR.

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Karsa, Athena, et Stefano Pirandola. « Noisy Receivers for Quantum Illumination ». IEEE Aerospace and Electronic Systems Magazine 35, n^o 11 (1 novembre 2020) : 22–29. http://dx.doi.org/10.1109/maes.2020.3004019.

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Shapiro, Jeffrey H., Zheshen Zhang et Franco N. C. Wong. « Secure communication via quantum illumination ». Quantum Information Processing 13, n^o 10 (8 novembre 2013) : 2171–93. http://dx.doi.org/10.1007/s11128-013-0662-1.

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Nair, Ranjith, et Mile Gu. « Fundamental limits of quantum illumination ». Optica 7, n^o 7 (6 juillet 2020) : 771. http://dx.doi.org/10.1364/optica.391335.

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Pirandola, Stefano. « On quantum reading, quantum illumination, and other notions ». IOP SciNotes 2, n^o 1 (1 mars 2021) : 015203. http://dx.doi.org/10.1088/2633-1357/abe99e.

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Bykov A. A., Nomokonov D. V., Goran A. V., Strygin I. S., Marchishin I. V. et Bakarov A. K. « Impact of illumination on quantum lifetime in selectively doped GaAs single quantum wells with short-period AlAs/GaAs superlattice barriers ». Semiconductors 57, n^o 3 (2023) : 180. http://dx.doi.org/10.21883/sc.2023.03.56233.4840.

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Impact of illumination on high-mobility dense 2D electron gas in selectively doped single GaAs quantum well with short-period AlAs/GaAs superlattice barriers at T=4.2 K in magnetic fields B<2 T has been studied. It was demonstrated that illumination at low temperatures gives rise to enhancement of electron density, mobility and quantum lifetime in studied heterostructures. The enhancement of quantum lifetime after illumination for single GaAs quantum well with modulated superlattice doping had been explained as consequence of decrease in effective concentration of remote ionized donors. Keywords: persistent photoconductivity, quantum lifetime, anisotropic mobility, superlattice barriers.

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10

Zhang, Tiantian, Zhiyuan Ye, Hai-Bo Wang et Jun Xiong. « Quantum-illumination-inspired active single-pixel imaging with structured illumination ». Applied Optics 60, n^o 32 (4 novembre 2021) : 10151. http://dx.doi.org/10.1364/ao.438642.

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Быков, А. А., Д. В. Номоконов, А. В. Горан, И. С. Стрыгин, И. В. Марчишин et А. К. Бакаров. « Влияние подсветки на квантовое время жизни в селективно-легированных одиночных GaAs квантовых ямах с короткопериодными AlAs/GaAs-сверхрешеточными барьерами ». Физика и техника полупроводников 57, n^o 3 (2023) : 181. http://dx.doi.org/10.21883/ftp.2023.03.55630.4840.

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Impact of illumination on high-mobility dense 2D electron gas in selectively doped single GaAs quantum well with short-period AlAs/GaAs superlattice barriers at T = 4.2 K in magnetic fields B < 2 T has been studied. It was demonstrated that illumination at low temperatures gives rise to enhancement of electron density, mobility and quantum lifetime in studied heterostructures. The enhancement of quantum lifetime after illumination for single GaAs quantum well with modulated superlattice doping had been explained as consequence of decrease in effective concentration of remote ionized donors.

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12

Karsa, Athena, et Stefano Pirandola. « Classical benchmarking for microwave quantum illumination ». IET Quantum Communication 2, n^o 4 (25 novembre 2021) : 246–57. http://dx.doi.org/10.1049/qtc2.12025.

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Zhang, Sheng-Li, Kun Wang, Jian-Sheng Guo et Jian-Hong Shi. « Quantum Illumination with Noiseless Linear Amplifier ». Chinese Physics Letters 32, n^o 9 (septembre 2015) : 090301. http://dx.doi.org/10.1088/0256-307x/32/9/090301.

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14

Barzanjeh, S., S. Pirandola, D. Vitali et J. M. Fink. « Microwave quantum illumination using a digital receiver ». Science Advances 6, n^o 19 (mai 2020) : eabb0451. http://dx.doi.org/10.1126/sciadv.abb0451.

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Quantum illumination uses entangled signal-idler photon pairs to boost the detection efficiency of low-reflectivity objects in environments with bright thermal noise. Its advantage is particularly evident at low signal powers, a promising feature for applications such as noninvasive biomedical scanning or low-power short-range radar. Here, we experimentally investigate the concept of quantum illumination at microwave frequencies. We generate entangled fields to illuminate a room-temperature object at a distance of 1 m in a free-space detection setup. We implement a digital phase-conjugate receiver based on linear quadrature measurements that outperforms a symmetric classical noise radar in the same conditions, despite the entanglement-breaking signal path. Starting from experimental data, we also simulate the case of perfect idler photon number detection, which results in a quantum advantage compared with the relative classical benchmark. Our results highlight the opportunities and challenges in the way toward a first room-temperature application of microwave quantum circuits.

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Ai, Lin, Min Tang, Ji Li, Hsiao Hsien Chen et Hong Meng. « Ultra-Bright 2D Assembled Copper Nanoclusters : Fluorescence Mechanism Exploration and LED Application ». Materials Science Forum 996 (juin 2020) : 20–25. http://dx.doi.org/10.4028/www.scientific.net/msf.996.20.

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Novel fluorescent nanomaterials have attracted enormous interests in the applications of illumination and display besides the traditional organic fluorophors. As potential alternatives, the environmental friendly fluorescent ultra-small organic-inorganic hybrid metal nanoclusters (size < 2 nm) is a series of powerful competitors used in illuminating field, on account of the non-poisonous, large amount of storage in earth, simple synthetic route, and relative low cost. The most important one, facile regulation of the fluorescence intensity and emission colors makes metal nanoclusters more attractive candidates for illumination application. Here, through ingeniously designing the structures of capping ligands, the highly bright copper nanoclusters are obtained, which further assemble into 2D ribbons with fluorescence quantum efficiency ascending to 36.4%. Last, the light emitting diodes with excellent performance are constructed, the emission wavelength locates at 650 nm in red region, which is suitable for plant illumination.

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16

Blakely, Jonathan N. « Quantum illumination with a parametrically amplified idler ». Physics Letters A 400 (juin 2021) : 127319. http://dx.doi.org/10.1016/j.physleta.2021.127319.

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Zhang, Wen-Zhao, Yu-Han Ma, Jing-Fu Chen et Chang-Pu Sun. « Quantum illumination assistant with error-correcting codes ». New Journal of Physics 22, n^o 1 (14 janvier 2020) : 013011. http://dx.doi.org/10.1088/1367-2630/ab6064.

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Classen, Anton, Joachim von Zanthier, Marlan O. Scully et Girish S. Agarwal. « Superresolution via structured illumination quantum correlation microscopy ». Optica 4, n^o 6 (30 mai 2017) : 580. http://dx.doi.org/10.1364/optica.4.000580.

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Lloyd, Seth. « Enhanced Sensitivity of Photodetection via Quantum Illumination ». Science 321, n^o 5895 (12 septembre 2008) : 1463–65. http://dx.doi.org/10.1126/science.1160627.

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Shapiro, Jeffrey H., et Seth Lloyd. « Quantum illumination versus coherent-state target detection ». New Journal of Physics 11, n^o 6 (24 juin 2009) : 063045. http://dx.doi.org/10.1088/1367-2630/11/6/063045.

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Luong, David, Sreeraman Rajan et Bhashyam Balaji. « Quantum Monopulse Radar ». Applied Computational Electromagnetics Society 35, n^o 11 (5 février 2021) : 1430–32. http://dx.doi.org/10.47037/2020.aces.j.351184.

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We evaluate the feasibility of a quantum monopulse radar, focusing on quantum illumination (QI) radars and quantum two-mode squeezing (QTMS) radars. Based on their similarity with noise radar, for which monopulse operation is known to be possible, we find that QTMS radars can be adapted into monopulse radars, but QI radars cannot. We conclude that quantum monopulse radars are feasible.

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Hui Jun, 惠俊, et 柴洪洲 Chai Hongzhou. « 基于量子照明的导航测距方案 ». Acta Optica Sinica 43, n^o 1 (2023) : 0127001. http://dx.doi.org/10.3788/aos220802.

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Fatehmulla, Amanullah, M. Aslam Manthrammel, W. A. Farooq, Syed Mansoor Ali et M. Atif. « Photovoltaic and Impedance Properties of Hierarchical TiO2Nanowire Based Quantum Dot Sensitized Solar Cell ». Journal of Nanomaterials 2015 (2015) : 1–9. http://dx.doi.org/10.1155/2015/358063.

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Growth and characterization of TiO2nanowire (NW) assemblies on FTO glass using a typical hydrothermal synthesis have been reported. CdS quantum dots (QDs) have been deposited on TiO2nanowires by successive ion layer adsorption and reaction (SILAR) method. FESEM image exhibits the flower-like hierarchical TiO2bunch of nanowires. HRTEM image confirms the size of CdS QDs between 5 and 6 nm. XRD and absorption studies revealed proper growth of CdS quantum dots on TiO2nanowires. At AM 1.5 illumination intensity, the solar cell, with the configuration FTO/TiO2-NW/CdS-QDs/Pt-FTO, displays a short circuit current (Jsc) of 1.295 mA and an open circuit voltage (Voc) of 0.38 V. TheVocandJscshowed linear behavior at higher illumination intensities. The peak in power-voltage characteristics at various illuminations showed a shift towards higherVocvalues. Capacitance-voltage (C-V), conductance-voltage (G-V), and series resistance-voltage (Rs-V) measurements of the cell in the frequency ranging from 5 kHz to 5 MHz showed decreasing trend of capacitance with increase of frequency whereas increase in conductance and decrease in resistance have been noticed with increase of frequency. All the results including the individual behavior of the plots of capacitance, conductance, and series resistance as a function of bias voltage have been discussed.

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24

Kim, Dong-Hwan, Su-Yong Lee, Yonggi Jo, Duk Y. Kim, Zaeill Kim et Taek Jeong. « A Method to Compute the Schrieffer–Wolff Generator for Analysis of Quantum Memory ». Entropy 23, n^o 10 (27 septembre 2021) : 1260. http://dx.doi.org/10.3390/e23101260.

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Quantum illumination uses entangled light that consists of signal and idler modes to achieve higher detection rate of a low-reflective object in noisy environments. The best performance of quantum illumination can be achieved by measuring the returned signal mode together with the idler mode. Thus, it is necessary to prepare a quantum memory that can keep the idler mode ideal. To send a signal towards a long-distance target, entangled light in the microwave regime is used. There was a recent demonstration of a microwave quantum memory using microwave cavities coupled with a transmon qubit. We propose an ordering of bosonic operators to efficiently compute the Schrieffer–Wolff transformation generator to analyze the quantum memory. Our proposed method is applicable to a wide class of systems described by bosonic operators whose interaction part represents a definite number of transfer in quanta.

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Imran, Murtaza. « Illumination Time Dependent Degradation of C₆₀ Solar Cell Efficiencies ». Applied Mechanics and Materials 378 (août 2013) : 125–30. http://dx.doi.org/10.4028/www.scientific.net/amm.378.125.

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In contrast to the solar cells based on inorganic semiconductors, organic solar cells degrade during illumination. Therefore, the influence of the illumination time on the efficiencies of an organic solar cell is investigated which reveals that under steady-state illumination at 1 sun (100 mW/cm2) the efficiency of the solar cell with the structure of ITO/CuPc/C60/BCP/Ag degrade significantly over few hours. There are three efficiencies that are of interest; Fill Factor (FF), Power Conversion Efficiency (PCE), and Quantum Yield (QY). Fill factor decreased less than power conversion efficiency and quantum yield, indicating that the degradation in those efficiencies is caused by photon-induced damage to the molecules that did not lead to an increase in internal resistance.

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Ермачихин, А. В., Ю. В. Воробьев, А. Д. Маслов, Е. П. Трусов et В. Г. Литвинов. « Квантовый выход двусторонних солнечных элементов типа HIT ». Физика и техника полупроводников 54, n^o 10 (2020) : 1066. http://dx.doi.org/10.21883/ftp.2020.10.49944.9415.

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In this paper we showed that illumination of both front and back sides of heterojunction solar cells contribute efficiency. The obtained spectral dispersion of quantum efficiency confirms that contribution depends on conversion of short-wave photonts. The average difference between quantum efficiency of both sides is ∼ 11%. Under standard solar illumination in the 400−1100 nm wavelength range the short-current density for front side is 36.3 mA/cm² and 32.7 mA/cm² for back side with reduction about 10%.

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Bogdanov, E. V., et N. Ya Minina. « Concentration and Mobility of Electrons in n-GaAs/AlGaAs:Si Nanostructures under Uniaxial Compression in the Dark and After Illumination ». International Journal of Nanoscience 18, n^o 03n04 (26 mars 2019) : 1940028. http://dx.doi.org/10.1142/s0219581x19400283.

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Resistivity, Hall effect and quantum oscillations of magnetoresistance in a two-dimensional electron system at an n-GaAs/Al0.29Ga0.71As:Si heterointerface have been investigated under uniaxial compression up to 3.5 kbar along [110] direction in the dark and after illumination by infrared diode at 1.7 K. The observed persistent photoconductivity is connected with the excitation of deep DX centers in the active layer. The electron redistribution between the quantum well and the active layer explains pressure dependence of the electron mobility and concentration fixed after illumination.

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Yang, Hao, Wojciech Roga, Jonathan D. Pritchard et John Jeffers. « Gaussian state-based quantum illumination with simple photodetection ». Optics Express 29, n^o 6 (2 mars 2021) : 8199. http://dx.doi.org/10.1364/oe.416151.

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Noh, Changsuk, Changhyoup Lee et Su-Yong Lee. « Quantum illumination with definite photon-number entangled states ». Journal of the Optical Society of America B 39, n^o 5 (11 avril 2022) : 1316. http://dx.doi.org/10.1364/josab.455994.

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Yang, Jia-Zhi, Ming-Fei Li, Xiao-Xiao Chen, Wen-Kai Yu et An-Ning Zhang. « Single-photon quantum imaging via single-photon illumination ». Applied Physics Letters 117, n^o 21 (23 novembre 2020) : 214001. http://dx.doi.org/10.1063/5.0021214.

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Bourassa, Jerome, et Christopher M. Wilson. « Progress Toward an All-Microwave Quantum Illumination Radar ». IEEE Aerospace and Electronic Systems Magazine 35, n^o 11 (1 novembre 2020) : 58–69. http://dx.doi.org/10.1109/maes.2020.3024422.

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32

Xiong, Biao, Xun Li, Xiao-Yu Wang et Ling Zhou. « Improve microwave quantum illumination via optical parametric amplifier ». Annals of Physics 385 (octobre 2017) : 757–68. http://dx.doi.org/10.1016/j.aop.2017.08.024.

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Zhou, Zhiqiang, Jiawei Cong, Hongbing Yao, Yonghong Fu et Naifei Ren. « The influence of illumination on two-photon absorption of quantum dots ». Journal of Nonlinear Optical Physics & ; Materials 27, n^o 03 (septembre 2018) : 1850031. http://dx.doi.org/10.1142/s0218863518500315.

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The influence of illumination with 365[Formula: see text]nm ultraviolet light on two-photon absorption (TPA) of aqueous Co[Formula: see text] doped CdTe (CdTe:Co) quantum dots (QDs) is studied. The results show that with the increase of illumination time, the TPA cross section of the CdTe:Co QDs increases. The experimental results suggest that this enhancement is due to the reduction of surface nonradiative traps which is consistent with the formation of CdS shell on the surface of CdTe:Co QDs. Meanwhile, the results indicate that aqueous CdTe:Co QDs have good optical limiting and optical stabilization performances. This provides a strategy of TPA enhancement by illumination.

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Marquez, Dalma M., et Cristián G. Sánchez. « Quantum efficiency of the photo-induced electronic transfer in dye–TiO2 complexes ». Physical Chemistry Chemical Physics 20, n^o 41 (2018) : 26280–87. http://dx.doi.org/10.1039/c8cp04625e.

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Homer, Micaela Kalmek, Ding-Yuan Kuo, Florence Y. Dou et Brandi Michelle Cossairt. « (Keynote) Photoinduced Charge Transfer from Quantum Dots Measured By Cyclic Voltammetry ». ECS Meeting Abstracts MA2022-02, n^o 20 (9 octobre 2022) : 916. http://dx.doi.org/10.1149/ma2022-0220916mtgabs.

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Measuring and modulating charge transfer processes at quantum dot interfaces are crucial steps in the development of quantum dot photocatalysis. In this work, cyclic voltammetry under illumination is demonstrated to measure the rate of photoinduced charge transfer from CdS quantum dots by directly probing the changing oxidation states of a library of model charge acceptors. The voltammetry data demonstrates the presence of long-lived electron donor states generated by native photodoping of the QDs as well as the relationship between driving force and rate of charge transfer. Changes to the voltammograms under illumination follow mechanistic predictions from classic zone diagrams and electrochemical modeling allows for measurement of the rate of productive electron transfer, giving rate constants (104 M-1s-1) that are distinct from the ps dynamics measured by conventional optical spectroscopy methods and that are more closely connected to the quantum yield of photoinduced chemical transformations.

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Arapov, Yurii G., Svetlana V. Gudina, Anna S. Klepikova, Vladimir N. Neverov, Sergey G. Novokshonov, Vsevolod I. Okulov, Tatiana B. Charikova, German I. Harus, Nina G. Shelushinina et Mikhail V. Yakunin. « Scaling in the Quantum Hall Regime for a Double Quantum Well Nanostructure in High Magnetic Field ». Solid State Phenomena 215 (avril 2014) : 208–13. http://dx.doi.org/10.4028/www.scientific.net/ssp.215.208.

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The longitudinal ρxx(B) and Hall ρxy(B) magnetoresistances are investigated in the integer quantum Hall effect regime in n-InGaAs/GaAs double quantum well nanostructures in the magnetic fields B up to 16 T at temperatures T = (0.05-4.2) K before and after IR illumination. The analysis of the quantum Hall effect plateau-plateau transitions based on the scaling hypothesis with regard to electron-electron interaction was carried out.

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Ma, Duanqi, Yanlin Xu, Qiuying Chen, Huafeng Ding, Xiaoming Tan, Qinfeng Xu et Chuanlu Yang. « Suppressed Phase Separation of Mixed-Halide Perovskite Quantum Dots Confined in Mesoporous Metal Organic Frameworks ». Nanomaterials 13, n^o 10 (16 mai 2023) : 1655. http://dx.doi.org/10.3390/nano13101655.

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Mixed-halide perovskite quantum dots (PeQDs) are the most competitive candidates in designing solar cells and light-emitting devices (LEDs) due to their tunable bandgap and high-efficiency quantum yield. However, phase separation in mixed-halide perovskites under illumination can form rich iodine and bromine regions, which change its optical responses. Herein, we synthesize PeQDs combined with mesoporous zinc-based metal organic framework (MOF) crystals, which can greatly improve the stability of anti-anion exchange, including photo-, thermal, and long-term stabilities under illumination. This unique structure provides a solution for improving the performance of perovskite optoelectronic devices and stabilizing mixed-halide perovskite devices.

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Zhang, Wen-Jin, Chun-Yang Pan, Fan Cao, Haoran Wang, Qianqian Wu et Xuyong Yang. « Synthesis and electroluminescence of novel white fluorescence quantum dots based on a Zn–Ga–S host ». Chemical Communications 55, n^o 94 (2019) : 14206–9. http://dx.doi.org/10.1039/c9cc06881c.

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White-light-emitting Ag, Mn: Zn–Ga–S/ZnS quantum dots (QDs) with a gratifying photoluminescence (PL) quantum yield (QY) of up to 90% were prepared, and shown to be ultra-stable, maintaining a high PL intensity at 300 °C or for 32 h of UV illumination.

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Borderieux, Sylvain, Arnaud Coatanhay et Ali Khenchaf. « Quantum Illumination Radar Using Polarization States of Photons in Atmosphere : Quantum Information Approach ». Progress In Electromagnetics Research B 103 (2023) : 101–18. http://dx.doi.org/10.2528/pierb23051804.

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Takahashi, Yuto, Tiancheng Wang, Shogo Usami et Tsuyoshi Sasaki Usuda. « Effect of Multiple Positions Illumination in Quantum Ghost Imaging ». IEEJ Transactions on Electronics, Information and Systems 142, n^o 8 (1 août 2022) : 933–41. http://dx.doi.org/10.1541/ieejeiss.142.933.

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Lee, Deuk-Ju, Jong-Dae Kim, Yu-Seop Kim, Hye-Jeong Song et Chan-Young Park. « Fluorescence reference plate for UV illumination using quantum dots ». Technology and Health Care 24, s1 (8 décembre 2015) : S77—S82. http://dx.doi.org/10.3233/thc-151062.

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Weedbrook, Christian, Stefano Pirandola, Jayne Thompson, Vlatko Vedral et Mile Gu. « How discord underlies the noise resilience of quantum illumination ». New Journal of Physics 18, n^o 4 (18 avril 2016) : 043027. http://dx.doi.org/10.1088/1367-2630/18/4/043027.

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ZENG, HUI, HUAIDONG YANG, GUOXUAN LIU, SICHUN ZHANG, XINRONG ZHANG et YINXIN ZHANG. « Simultaneous multicolour imaging using quantum dot structured illumination microscopy ». Journal of Microscopy 277, n^o 1 (janvier 2020) : 32–41. http://dx.doi.org/10.1111/jmi.12862.

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Chen, Gang, Clyde G. Bethea et Rainer Martini. « Quantum cascade laser gain enhancement by front facet illumination ». Optics Express 17, n^o 26 (18 décembre 2009) : 24282. http://dx.doi.org/10.1364/oe.17.024282.

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Nasr, A. « Performance of quantum wire infrared photodetectors under illumination conditions ». Optics & ; Laser Technology 41, n^o 7 (octobre 2009) : 871–76. http://dx.doi.org/10.1016/j.optlastec.2009.03.001.

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Lydersen, Lars, Carlos Wiechers, Christoffer Wittmann, Dominique Elser, Johannes Skaar et Vadim Makarov. « Hacking commercial quantum cryptography systems by tailored bright illumination ». Nature Photonics 4, n^o 10 (29 août 2010) : 686–89. http://dx.doi.org/10.1038/nphoton.2010.214.

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Castellano, Fabrizio, Rita C. Iotti et Fausto Rossi. « Miniband quantum transport in semiconductor nanodevices under broadband illumination ». Journal of Physics : Conference Series 193 (1 novembre 2009) : 012089. http://dx.doi.org/10.1088/1742-6596/193/1/012089.

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Zhuang, Quntao, Zheshen Zhang et Jeffrey H. Shapiro. « Entanglement-enhanced Neyman–Pearson target detection using quantum illumination ». Journal of the Optical Society of America B 34, n^o 8 (6 juillet 2017) : 1567. http://dx.doi.org/10.1364/josab.34.001567.

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Соболев, М. М., О. С. Кен, О. М. Сресели, Д. А. Явсин et С. А. Гуревич. « Выявление пространственного и квантового ограничения Si-наночастиц, нанесенных методом лазерного электродиспергирования на кристаллический Si ». Письма в журнал технической физики 44, n^o 7 (2018) : 30. http://dx.doi.org/10.21883/pjtf.2018.07.45882.17117.

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AbstractC – V characteristics and DLTS spectra of heterostructures made up of layers of closely packed amorphous Si nanoparticles deposited by laser electrodispersion onto single-crystal p -Si substrates have been examined. The patterns observed in the behavior of the C – V characteristics and DLTS spectra measured in the dark and under illumination with white light at various bias pulse voltages U _ b and filling pulse voltages U _ f suggest that the spatially localized amorphous Si nanoparticles have an average size of less than 2 nm, which is comparable with the de Broglie electron wavelength, and are characterized by quantum confinement. The ground and excited states of quantum dots are formed and exhibit the Stark effect and effects of electricdipole and controllable metastable occupancy under illumination.

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Wu, Bo-Han, Zheshen Zhang et Quntao Zhuang. « Continuous-variable quantum repeaters based on bosonic error-correction and teleportation : architecture and applications ». Quantum Science and Technology 7, n^o 2 (14 mars 2022) : 025018. http://dx.doi.org/10.1088/2058-9565/ac4f6b.

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Abstract Quantum repeater is an essential ingredient for quantum networks that link distant quantum modules such as quantum computers and sensors. Motivated by distributed quantum computing and communication, quantum repeaters that relay discrete-variable quantum information have been extensively studied; while continuous-variable (CV) quantum information underpins a variety of quantum sensing and communication application, a quantum-repeater architecture for genuine CV quantum information remains largely unexplored. This paper reports a CV quantum-repeater architecture based on CV quantum teleportation assisted by the Gottesman–Kitaev–Preskill code to significantly suppress the physical noise. The designed CV quantum-repeater architecture is shown to significantly improve the performance of entanglement-assisted communication, target detection based on quantum illumination and CV quantum key distribution, as three representative use cases for quantum communication and sensing.

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Articles de revues sur le sujet « Quantum illumination »

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