Author: Roman M. LutchynPublisher:
ISBN:
Category :
Languages : en
Pages : 252
Book Description
Kinetics of Superconducting Quantum Circuits
Author: Roman M. LutchynSuperconducting Quantum Circuits
Author: Johannes Balthasar MajerPublisher: Delft University Press
ISBN:
Category : Science
Languages : en
Pages : 128
Book Description
Contents of this Doctoral Dissertation include: vortices in Josephson junction arrays, fabrication method, quantum ratchet effect for vortices, quantum transport in a few band system, vortex transport in quasi one-dimensional Josephson junction arrays, quantum vortices with weak interaction, simple phase bias for superconducting circuits, coupling of qubits, persistent-current qubit as quasi-spin
Decoherence and Time-Resolved Readout in Superconducting Quantum Circuits (Dekohärenz und Zeitaufgelösste Quantenmessung in Supraleitenden Schaltkreisen)
Author: Georg M. ReutherPublisher: Logos Verlag Berlin GmbH
ISBN: 3832528466
Category : Computers
Languages : en
Pages : 158
Book Description
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.
Intrinsic Decoherence in Superconducting Quantum Circuits
Author: Steffen SchlörQuantum Tunneling of Josephson Vortices in High-Impedance Long Junctions
Author: Wildermuth, Matthias MichaPublisher: KIT Scientific Publishing
ISBN: 373151303X
Category :
Languages : en
Pages : 160
Book Description
In the last decades, superconducting devices have emerged as a promising platform for quantum technologies, including quantum sensing and quantum computing. Their key elements are Josephson junctions, which allow for coherent supercurrent tunneling between two weakly linked superconductors. If such a junction is extended in one direction to a long junction, the superconducting phase difference can vary in space and time and may allow for quantized phase windings that drive supercurrent vortices.
Superconducting Quantumcircuits for Hybrid Architectures
Author: Patrick WinkelGranular aluminium superinductors
Author: Grünhaupt, LukasPublisher: KIT Scientific Publishing
ISBN: 3731509563
Category : Science
Languages : en
Pages : 168
Book Description
Control and Readout of a Superconducting Artificial Atom
Author: Romeo BianchettiPublisher: Sudwestdeutscher Verlag Fur Hochschulschriften AG
ISBN: 9783838111797
Category :
Languages : en
Pages : 164
Book Description
Cavity quantum electrodynamics (CQED) features all unique characteristics of quantum mechanics, studying the strong interaction of single photons and atoms. The implementation of artificial superconducting atoms in high quality transmission line cavities realizes such a CQED setup in a solid state environment. This opens the field of quantum optics to embedded devices. Furthermore, the relatively simple fabrication of these devices makes them a promising candidate for the realization of a quantum information processor. In this architecture, macroscopic quantum circuits act as effective two- and three-level systems (qubits and qutrits) by employing the large non-linearity of a Josephson junction. They strongly couple to single photons in a one-dimensional superconducting cavity which inhibits radiative decay for the contained fragile states and at the same time acts as a readout device.
Quantum Computation and Quantum Information
Author: Michael A. NielsenPublisher: Cambridge University Press
ISBN: 1139495488
Category : Science
Languages : en
Pages : 709
Book Description
One of the most cited books in physics of all time, Quantum Computation and Quantum Information remains the best textbook in this exciting field of science. This 10th anniversary edition includes an introduction from the authors setting the work in context. This comprehensive textbook describes such remarkable effects as fast quantum algorithms, quantum teleportation, quantum cryptography and quantum error-correction. Quantum mechanics and computer science are introduced before moving on to describe what a quantum computer is, how it can be used to solve problems faster than 'classical' computers and its real-world implementation. It concludes with an in-depth treatment of quantum information. Containing a wealth of figures and exercises, this well-known textbook is ideal for courses on the subject, and will interest beginning graduate students and researchers in physics, computer science, mathematics, and electrical engineering.
Superconducting Quantum Circuits in a Tunable Electromagnetic Environment
Author: Silvia CorleviPublisher:
ISBN: 9789172838444
Category :
Languages : en
Pages : 64
Book Description