Controlling The Effective Hamiltonian Of A Driven Quantum Superconducting Circuit
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Controlling The Effective Hamiltonian Of A Driven Quantum Superconducting Circuit
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Author : Jayameenakshi Venkatraman
language : en
Publisher: Springer Nature
Release Date : 2025-04-25
Controlling The Effective Hamiltonian Of A Driven Quantum Superconducting Circuit written by Jayameenakshi Venkatraman and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-04-25 with Science categories.
The thesis illustrates, with a remarkable combination of theoretical analysis and experimental investigation, how the static Hamiltonian of an oscillator with both 3rd and 4th order non-linearity can morph into a profoundly different Hamiltonian under the influence of an oscillating driving force. In a classical system, such transformation would not be considered a novelty, but the author demonstrates that the new Hamiltonian can possess an exotic symmetry with surprising new quantum properties that one would never anticipate from the original Hamiltonian, with no classical equivalent. The root cause of these unexpected properties is a subtle interference effect, which is only possible in a quantum context. Carefully crafted control experiments ensure that measured data are compared with theoretical predictions with no adjustable parameters. Instrumental in this comparison is a new diagrammatic theory developed by the author.
Decoherence And Time Resolved Readout In Superconducting Quantum Circuits Dekoh Renz Und Zeitaufgel Sste Quantenmessung In Supraleitenden Schaltkreisen
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Author : Georg M. Reuther
language : en
Publisher: Logos Verlag Berlin GmbH
Release Date : 2011
Decoherence And Time Resolved Readout In Superconducting Quantum Circuits Dekoh Renz Und Zeitaufgel Sste Quantenmessung In Supraleitenden Schaltkreisen written by Georg M. Reuther and has been published by Logos Verlag Berlin GmbH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Computers categories.
Superconducting quantum circuits are promising candidates for solid-state based quantum computation. However, minimizing dissipation caused by external noise sources remains a tough challenge. Here, we present an analytic dissipative theory for a complex circuit of two resonators coupled via a flux qubit. In this 'quantum switch', the qubit acts as a tunable coupler between the resonators, which enables switching their interaction on and off. A natural application of this setup is to create entangled two-resonator states. However, it turns out that, even if the qubit has no dynamics, qubit dissipation affects the resonators to a considerable degree. For successful quantum information processing, it is desirable to demonstrate the coherence of qubit time evolution in single-shot experiments without too much backaction on the qubit. In the second part of this thesis, we present a novel scheme for a time-resolved single-run measurement of coherent qubit dynamics. For a charge qubit probed by a weak high-frequency signal, we find that the reflected outgoing signal possesses a time-dependent phase shift that is proportional to a qubit observable. A similar approach is presented for a flux qubit coupled to a resonantly driven high-frequency oscillator, which serves as a meter device for monitoring the time-resolved qubit dynamics.
Quantum Machines Measurement And Control Of Engineered Quantum Systems
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Author : Michel Devoret
language : en
Publisher: OUP Oxford
Release Date : 2014-06-12
Quantum Machines Measurement And Control Of Engineered Quantum Systems written by Michel Devoret and has been published by OUP Oxford this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-12 with Science categories.
This book gathers the lecture notes of courses given at the 2011 summer school in theoretical physics in Les Houches, France, Session XCVI. What is a quantum machine? Can we say that lasers and transistors are quantum machines? After all, physicists advertise these devices as the two main spin-offs of the understanding of quantum mechanical phenomena. However, while quantum mechanics must be used to predict the wavelength of a laser and the operation voltage of a transistor, it does not intervene at the level of the signals processed by these systems. Signals involve macroscopic collective variables like voltages and currents in a circuit or the amplitude of the oscillating electric field in an electromagnetic cavity resonator. In a true quantum machine, the signal collective variables, which both inform the outside on the state of the machine and receive controlling instructions, must themselves be treated as quantum operators, just as the position of the electron in a hydrogen atom. Quantum superconducting circuits, quantum dots, and quantum nanomechanical resonators satisfy the definition of quantum machines. These mesoscopic systems exhibit a few collective dynamical variables, whose fluctuations are well in the quantum regime and whose measurement is essentially limited in precision by the Heisenberg uncertainty principle. Other engineered quantum systems based on natural, rather than artificial degrees of freedom can also qualify as quantum machines: trapped ions, single Rydberg atoms in superconducting cavities, and lattices of ultracold atoms. This book provides the basic knowledge needed to understand and investigate the physics of these novel systems.
Proceedings Of The Ieee Conference On Nanotechnology
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Author :
language : en
Publisher:
Release Date : 2002
Proceedings Of The Ieee Conference On Nanotechnology written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Nanotechnology categories.
Quantum Entanglement And Information Processing
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Author :
language : en
Publisher: Elsevier
Release Date : 2004-11-05
Quantum Entanglement And Information Processing written by and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-11-05 with Science categories.
It has been recognised recently that the strange features of the quantum world could be used for new information transmission or processing functions such as quantum cryptography or, more ambitiously, quantum computing. These fascinating perspectives renewed the interest in fundamental quantum properties and lead to important theoretical advances, such as quantum algorithms and quantum error correction codes. On the experimental side, remarkable advances have been achieved in quantum optics, solid state physics or nuclear magnetic resonance. This book presents the lecture notes of the Les Houches Summer School on 'Quantum entanglement and information processing'. Following the long tradition of the les Houches schools, it provides a comprehensive and pedagogical approach of the whole field, written by renowned specialists.One major goal of this book is to establish connections between the communities of quantum optics and of quantum electronic devices working in the area of quantum computing. When two communities share the same goals, the universality of physics unavoidably leads to similar developments. However, the communication barrier is often high, and few physicists are able to overcome it. This school has contributed to bridge the existing gap between communities, for the benefit of the future actors in the field of quantum computing. The book thus combines introductory chapters, providing the reader with a sufficiently wide theoretical framework in quantum information, quantum optics and quantum circuits physics, with more specialized presentations of recent theoretical and experimental advances in the field. This structure makes the book accessible to any graduate student having a good knowledge of basic quantum mechanics, and extremely useful to researchers.·Covers quantum optics, solid state physics and NMR implementations·Pedagogical approach combining introductory lectures and advanced chapters·Written by leading experts in the field·Accessible to all graduate students with a basic knowledge of quantum mechanics
Controllable Quantum States Mesoscopic Superconductivity And Spintronics Ms S2006 Proceedings Of The International Symposium
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Author : Hideaki Takayanagi
language : en
Publisher: World Scientific
Release Date : 2008-10-03
Controllable Quantum States Mesoscopic Superconductivity And Spintronics Ms S2006 Proceedings Of The International Symposium written by Hideaki Takayanagi and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-10-03 with Science categories.
This volume is a collection of papers from the fourth meeting of the International Symposium on Mesoscopic Superconductivity and Spintronics held at NTT Atsugi, Japan. Research in these fields has advanced a great deal since the previous meeting, largely because these fields have drawn much attention from the viewpoint of new quantum phenomena and quantum information technology. Mesoscopic superconductivity has been developed in new fields, such as a ferromagnet/superconductor junction, the proximity effect in unconventional superconductors, macroscopic quantum tunneling in high-Tc superconductors, quantum modulation of superconducting junctions and superconducting quantum bits. The book also covers transport and spins in nano-scale semiconductor structures such as quantum dots and wires, quantum interference and coherence and order in exotic materials, and some papers on quantum algorithm. This book adequately provides an overview of recent progress in mesoscopic superconductivity.
Quantum Transport In Mesoscopic Systems
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Author : David Sánchez
language : en
Publisher: MDPI
Release Date : 2021-01-06
Quantum Transport In Mesoscopic Systems written by David Sánchez and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-01-06 with Mathematics categories.
Mesoscopic physics deals with systems larger than single atoms but small enough to retain their quantum properties. The possibility to create and manipulate conductors of the nanometer scale has given birth to a set of phenomena that have revolutionized physics: quantum Hall effects, persistent currents, weak localization, Coulomb blockade, etc. This Special Issue tackles the latest developments in the field. Contributors discuss time-dependent transport, quantum pumping, nanoscale heat engines and motors, molecular junctions, electron–electron correlations in confined systems, quantum thermo-electrics and current fluctuations. The works included herein represent an up-to-date account of exciting research with a broad impact in both fundamental and applied topics.
Physics Briefs
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Author :
language : en
Publisher:
Release Date : 1988
Physics Briefs written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Physics categories.
Nuclear Science Abstracts
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Author :
language : en
Publisher:
Release Date : 1973
Nuclear Science Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Nuclear energy categories.
Nanoelectronics And Information Technology
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Author : Rainer Waser
language : en
Publisher: John Wiley & Sons
Release Date : 2012-05-29
Nanoelectronics And Information Technology written by Rainer Waser and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-05-29 with Technology & Engineering categories.
Fachlich auf höchstem Niveau, visuell überzeugend und durchgängig farbig illustriert: Das ist die neue Auflage der praxisbewährten Einführung in spezialisierte elektronische Materialien und Bauelemente aus der Informationstechnologie. Über ein Drittel des Inhalts ist neu, alle anderen Beiträge wurden gründlich überarbeitet und aktualisiert.