Littérature scientifique sur le sujet « Hole spin quantum bit »
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Articles de revues sur le sujet "Hole spin quantum bit"
Mäkelä, Jarmo. « Wheeler’s it from bit proposal in loop quantum gravity ». International Journal of Modern Physics D 28, no 10 (juillet 2019) : 1950129. http://dx.doi.org/10.1142/s0218271819501293.
Texte intégralCombescot, Monique, et Shiue-Yuan Shiau. « From spherical to periodic symmetry : the analog of orbital angular momentum for semiconductor crystals ». Journal of Physics : Condensed Matter 34, no 20 (4 avril 2022) : 205502. http://dx.doi.org/10.1088/1361-648x/ac5867.
Texte intégralJiang, Ao, Shibo Xing, Haowei Lin, Qing Chen et Mingxuan Li. « Role of Pyramidal Low-Dimensional Semiconductors in Advancing the Field of Optoelectronics ». Photonics 11, no 4 (15 avril 2024) : 370. http://dx.doi.org/10.3390/photonics11040370.
Texte intégralHartmann, Jean-Michel, Nicolas Bernier, Francois Pierre, Jean-Paul Barnes, Vincent Mazzocchi, Julia Krawczyk, Gabriel Lima, Elyjah Kiyooka et Silvano De Franceschi. « Epitaxy of Group-IV Semiconductors for Quantum Electronics ». ECS Meeting Abstracts MA2023-01, no 29 (28 août 2023) : 1792. http://dx.doi.org/10.1149/ma2023-01291792mtgabs.
Texte intégralMarie, X., T. Amand, P. Le Jeune, M. Paillard, P. Renucci, L. E. Golub, V. D. Dymnikov et E. L. Ivchenko. « Hole spin quantum beats in quantum-well structures ». Physical Review B 60, no 8 (15 août 1999) : 5811–17. http://dx.doi.org/10.1103/physrevb.60.5811.
Texte intégralOguri, A., K. Yamanaka, J. Inoue et S. Maekawa. « Quantum spin-liquid state with a hole ». Physical Review B 43, no 1 (1 janvier 1991) : 186–92. http://dx.doi.org/10.1103/physrevb.43.186.
Texte intégralFerreira, R., et G. Bastard. « Hole “Spin” Relaxation in Semiconductor Quantum Wells ». Europhysics Letters (EPL) 23, no 6 (20 août 1993) : 439–44. http://dx.doi.org/10.1209/0295-5075/23/6/010.
Texte intégralZinov’eva, A. F., A. V. Nenashev et A. V. Dvurechenskii. « Hole spin relaxation in Ge quantum dots ». Journal of Experimental and Theoretical Physics Letters 82, no 5 (septembre 2005) : 302–5. http://dx.doi.org/10.1134/1.2130917.
Texte intégralBaylac, B., X. Marie, T. Amand, M. Brousseau, J. Barrau et Y. Shekun. « Hole spin relaxation in intrinsic quantum wells ». Surface Science 326, no 1-2 (mars 1995) : 161–66. http://dx.doi.org/10.1016/0039-6028(94)00743-8.
Texte intégralLI, ZHONG-HENG. « QUANTUM ERGOSPHERE AND HAWKING PROCESS ». Modern Physics Letters A 14, no 28 (14 septembre 1999) : 1951–60. http://dx.doi.org/10.1142/s0217732399002029.
Texte intégralThèses sur le sujet "Hole spin quantum bit"
Bassi, Marion. « Résilience ajustable d'un spin de trou au bruit de charge ». Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALY018.
Texte intégralSpin quantum bits (qubits) established in group-IV semiconductor quantum dots structures (QD) embody a promising platform for large-scale quantum processors leveraging on small footprint and compatible fabrication processes with mainstream semiconductor industry. In particular, hole particles recently gained attention as spin qubit platform as they enable fast and all-electrical manipulation due to their intrinsically large spin-orbit coupling. The latter coupling however stands as a two-edged sword as it also exposes the hole spin to undesired interactions with the surrounding environment, which in turn degrade the qubit coherence time. Over the past years, many efforts have been conducted to mitigate electrical noise influence stemming from the environment thus revealing the existence of preferential points of enhanced coherence time, named ``sweetspots'', depending on magnetic field orientation.In this manuscript, the emphasis is laid on the characterization of electrical noise contributions impacting a single hole spin qubit with respect to magnetic field orientation on a P-doped natural silicon-MOS architecture. The hole particle is spatially confined in a QD defined electrostatically within the device. Spin orientation is readout by radio-frequency reflectometry based on energy-selective readout method. We experimentally demonstrate that the reported ``sweetspots'' belong in fact to continuous ``sweetlines'' wrapped around the sphere of magnetic-field polar-angle components, in agreement with theoretical predictions. We also show that, in addition to extended coherence time, sweetline operation is compatible with efficient electric-dipole spin resonance with Rabi frequencies, f_R, comfortably exceeding 10 MHz, and a qubit quality factor Q = 2 f_R T_2^R as high as 690, competing with reported values for electrons. Our study evidences ample gate-voltage control of the sweetlines position in magnetic field, an aspect particularly relevant in the purview of scalability. Finally, the experimental investigation of such optimal operation points is extended to a two qubit system as a proof of concept underscoring the importance of sweetlines tuning for spin qubit systems
Pingenot, Joseph Albert Ferguson. « Electron and hole spins in quantum dots ». Diss., University of Iowa, 2009. https://ir.uiowa.edu/etd/259.
Texte intégralNotbohm, Susanne. « Spin dynamics of quantum spin-ladders and chains ». Thesis, St Andrews, 2007. http://hdl.handle.net/10023/403.
Texte intégralThiney, Vivien. « Detection of travelling electrons in the Quantum Hall effect regime with a singlet-triplet quantum bit detector ». Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAY069/document.
Texte intégralThe electron quantum optics field is a research topic with an interest growing over the years since the 80's and the first interference experiment with electrons. This field is dedicated to the implementation of quantum optics experiments with electrons instead of photon. The advantage is twofold, one is the fermion nature of the electrons which ensure the observation of phenomenon which cannot be observed with photon (boson), the anti-bunching of the electrons in correlation experiments contrary to the bunching for photons illustrates this point. The second advantage is the possibility to interact and control electrons with electric fields since they are charged particles. Such control does not exist with photon. In addition to these fundamental experiments, it has been recently demonstrated that this topic presents a possible candidate for quantum information with so called flying qubit. While the based components to mimic the quantum optics experiments are already demonstrated like the beam splitter, phase shifter or coherent single electron source, the single electron detection in a single shot manner in such system is still lacking. The difficulty being the short interaction time between the travelling charge and the charge detector, being of less than 1ns in such system where the electron propagate at the Fermi velocity 10-100km/s. This interaction is approximately two orders of magnitude shorter than what is required with the actual best on chip charge detector.In this thesis is presented the development of an ultra-sensitive detector for the single shot detection of an electron travelling at the Fermi velocity. Our strategy was to detect a single travelling electron propagating in the edge channels (ECs) of the quantum Hall effect by measuring the induced phase shift of a singlet-triplet qubit, referred as to the qubit detector. The single shot detection being only possible if the interaction with the travelling electron induces a complete π phase shift and the spin readout of the qubit detector being performed in a single shot manner.Thanks to the development and use of a RF-QPC the single shot spin readout of the qubit detector has been first demonstrated. Its development with the implementation of coherent exchange oscillations is then described. The charge sensitivity of the qubit detector is validated in an experiment consisting in recording a phase shift of these oscillations due to the interaction with an imposed flow of electrons in the ECs. This flow of electron was induced by a DC voltage bias applied on the ECs to tune their chemical potential.This qubit detector is then optimised for the single travelling charge detection. Its calibration has been implemented using the same imposed flow of electrons by application of a DC bias. This calibration provides the expected signal variation induced by the interaction with a single travelling electron, and indicates the impossibility to implement this detection in a single shot manner in our experimental conditions. Our detector exhibits a charge sensitivity estimated close to 8.10-5 e/Hz-1/2 for a detection bandwidth from DC to 1 THz. The sensitivity is close to two orders of magnitude smaller than required for a single shot detection. Finally this qubit detector has been employed to detect in average measurements an edge magneto plasmon composed by less than 5 electrons. However, the single electron level could not be reached in statistical measurement neither, the sensitivity of our qubit detector being too limited.The different limitations of our experiment are listed and explained with the presentation of different axes of development which could permit to succeed this detection in another experiment
Huthmacher, Lukas. « Investigation of efficient spin-photon interfaces for the realisation of quantum networks ». Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/277150.
Texte intégralTorresani, Patrick. « Hole quantum spintronics in strained germanium heterostructures ». Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAY040/document.
Texte intégralThis thesis focuses on low temperature experiments in germaniumbased heterostructure in the scope of quantumspintronic. First, theoretical advantages of Ge for quantum spintronic are detailed, specifically the low hyperfine interaction and strong spin orbit coupling expected in Ge. In a second chapter, the theory behind quantum dots and double dots systems is explained, focusing on the aspects necessary to understand the experiments described thereafter, that is to say charging effects in quantum dots and double dots and Pauli spin blockade. The third chapter focuses on spin orbit interaction. Its origin and its effect on energy band diagrams are detailed. This chapter then focuses on consequences of the spin orbit interaction specific to two dimensional germaniumheterostructure, that is to say Rashba spin orbit interaction, D’Yakonov Perel spin relaxation mechanism and weak antilocalization.In the fourth chapter are depicted experiments in Ge/Si core shell nanowires. In these nanowire, a quantumdot formnaturally due to contact Schottky barriers and is studied. By the use of electrostatic gates, a double dot system is formed and Pauli spin blockade is revealed.The fifth chapter reports magneto-transport measurements of a two-dimensional holegas in a strained Ge/SiGe heterostructure with the quantum well laying at the surface, revealing weak antilocalization. By fitting quantumcorrection to magneto-conductivity characteristic transport times and spin splitting energy of 2D holes are extracted. Additionally, suppression of weak antilocalization by amagnetic field parallel to the quantum well is reported and this effect is attributed to surface roughness and virtual occupation of unoccupied subbands.Finally, chapter number six reportsmeasurements of quantization of conductance in strained Ge/SiGe heterostructure with a buried quantumwell. First the heterostructure is characterized by means ofmagneto-conductance measurements in a Hall bar device. Then another device engineered specifically as a quantum point contact is measured and displays steps of conductance. Magnetic field dependance of these steps is measured and an estimation of the g-factor for heavy holes in germanium is extracted
Godden, Timothy Mark. « Coherent optical control of the spin of a single hole in a quantum dot ». Thesis, University of Sheffield, 2012. http://etheses.whiterose.ac.uk/2190/.
Texte intégralThiele, Stefan. « Read-out and coherent manipulation of an isolated nuclear spin using a single-molecule magnet spin-transistor ». Phd thesis, Université de Grenoble, 2014. http://tel.archives-ouvertes.fr/tel-00984973.
Texte intégralHirsch, William H. « Quantum effects of the massless spin one-half field in static spherically symmetric black hole and wormhole spacetimes ». Winston-Salem, NC : Wake Forest University, 2009. http://dspace.zsr.wfu.edu/jspui/handle/10339/44689.
Texte intégralVarwig, Steffen [Verfasser], Manfred [Akademischer Betreuer] Bayer et Metin [Gutachter] Tolan. « Optical electron spin tomography and hole spin coherence studies in (In,Ga)As/GaAs quantum dots / Steffen Varwig. Betreuer : Manfred Bayer. Gutachter : Metin Tolan ». Dortmund : Universitätsbibliothek Dortmund, 2014. http://d-nb.info/1100692487/34.
Texte intégralChapitres de livres sur le sujet "Hole spin quantum bit"
Sorella, S., et Q. F. Zhong. « Spin-Charge Decoupling and the One-Hole Green’s Function in a Quantum Antiferromagnet ». Dans Correlation Effects in Low-Dimensional Electron Systems, 185–89. Berlin, Heidelberg : Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-85129-2_20.
Texte intégralRoussignol, Ph, P. Rolland, R. Ferreira, C. Delalande, G. Bastard, A. Vinattieri, J. Martinez-Pastor et al. « Evidence of Slow Hole Spin Relaxation in n-Modulation Doped GaAs/AlGaAs Quantum Well Structures ». Dans Ultrafast Phenomena VIII, 446–47. Berlin, Heidelberg : Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-84910-7_143.
Texte intégralSatija, Indubala I. « Pseudo-Spin-1/2 Models and Topological States of Matter ». Dans The Wonder of Quantum Spin, 271–308. Oxford University PressOxford, 2024. http://dx.doi.org/10.1093/oso/9780198884859.003.0012.
Texte intégralSchenkel, Thomas, Cheuk Lo, Christoph Weis, Jeffrey Bokor, Alexei Tyryshkin et Stephen Lyon. « A Spin Quantum Bit Architecture with Coupled Donors and Quantum Dots in Silicon ». Dans Single-Atom Nanoelectronics. Pan Stanford Publishing, 2013. http://dx.doi.org/10.1201/b14792-12.
Texte intégralActes de conférences sur le sujet "Hole spin quantum bit"
Oestreich, M., R. Dahbashi, F. Berski et J. Hübner. « Spin noise spectroscopy : hole spin dynamics in semiconductor quantum dots ». Dans SPIE NanoScience + Engineering, sous la direction de Henri-Jean Drouhin, Jean-Eric Wegrowe et Manijeh Razeghi. SPIE, 2012. http://dx.doi.org/10.1117/12.930866.
Texte intégralSaini, L. K., Mukesh G. Nayak et R. O. Sharma. « Correlation effects on spin-polarized electron-hole quantum bilayer ». Dans INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2015) : Proceeding of International Conference on Condensed Matter and Applied Physics. Author(s), 2016. http://dx.doi.org/10.1063/1.4946051.
Texte intégralGodden, Timothy M., John H. Quilter, Andrew J. Ramsay, Stephen J. Boyle, Isaac J. Luxmoore, Jorge Puebla-Nunez, Mark Fox et Maurice S. Skolnick. « Coherent optical control a single hole spin in a quantum dot ». Dans Quantum Electronics and Laser Science Conference. Washington, D.C. : OSA, 2012. http://dx.doi.org/10.1364/qels.2012.qm3g.1.
Texte intégralSmirl, Arthur L., Eric J. Loren, Julien Rioux, J. E. Sipe et Henry M. van Driel. « Ultrafast Optical Measurement of Hole and Electron Spin Dynamics in Germanium ». Dans Quantum Electronics and Laser Science Conference. Washington, D.C. : OSA, 2010. http://dx.doi.org/10.1364/qels.2010.qwc6.
Texte intégralIto, T., H. Gotoh, M. Ichida et H. Ando. « Dynamics of Hole-Spin Superposition in GaAs/AlGaAs Quantum Wells ». Dans 2013 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2013. http://dx.doi.org/10.7567/ssdm.2013.e-3-3.
Texte intégralAkimoto, R., K. Ando, F. Sasaki, S. Kobayashi et T. Tani. « Femtosecond Carrier Spin Dynamics in CdTe/Cd0.6Mn0.4Te Quantum Wells ». Dans International Conference on Ultrafast Phenomena. Washington, D.C. : Optica Publishing Group, 1996. http://dx.doi.org/10.1364/up.1996.tue.38.
Texte intégralRühle, W. W., M. Oestreich, R. Hannak, A. P. Heberle, R. Nötzel, K. Ploog et Klaus Köhler. « Spin Quantum Beats in Quantum Wells and Wires ». Dans Quantum Optoelectronics. Washington, D.C. : Optica Publishing Group, 1995. http://dx.doi.org/10.1364/qo.1995.qwb1.
Texte intégralGodden, Timothy M., Stephen J. Boyle, Andrew J. Ramsay, Mark Fox et Maurice Skolnick. « Fast high fidelity hole spin initialization in a single InGaAs quantum dot ». Dans Quantum Electronics and Laser Science Conference. Washington, D.C. : OSA, 2011. http://dx.doi.org/10.1364/qels.2011.qthr5.
Texte intégralRiblet, P., AR Cameron et A. Miller. « Spin-Gratings and In-Well Carrier Transport Measurements in GaAs/AlGaAs Multiple Quantum Wells ». Dans Quantum Optoelectronics. Washington, D.C. : Optica Publishing Group, 1997. http://dx.doi.org/10.1364/qo.1997.qthe.3.
Texte intégralUehira, Kazutake, et Hiroshi Unno. « Image Recognition by Quantum Annealing Using Multi-bit Spin Variables ». Dans ICGSP 2021 : 2021 the 5th International Conference on Graphics and Signal Processing. New York, NY, USA : ACM, 2021. http://dx.doi.org/10.1145/3474906.3474911.
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