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THE ACOUSTIC-WAVE DRIVEN QUANTUM PROCESSOR

C. H. W. Barnes and M. Pepper

in Problems of Condensed Matter Physics: Quantum coherence phenomena in electron-hole and coupled matter-light systems

Published in print:
2007
Published Online:
May 2008
ISBN:
9780199238873
eISBN:
9780191716652
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199238873.003.0004
Subject:
Physics, Condensed Matter Physics / Materials

This chapter reviews the use of surface acoustic waves (SAWs) in an electron-spin based quantum state processor. A SAW-induced electric current of discrete single or controllable numbers of ... More


COHERENCE AND DECOHERENCE

Dante Gatteschi, Roberta Sessoli, and Jacques Villain

in Molecular Nanomagnets

Published in print:
2006
Published Online:
September 2007
ISBN:
9780198567530
eISBN:
9780191718298
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198567530.003.0011
Subject:
Physics, Condensed Matter Physics / Materials

This chapter focuses on coherence and decoherence, starting from the basis of quantum mechanics and including the classical paradox of Schrödinger’s cat and entanglement. Decoherence and relaxation ... More


Measures of entanglement

Vlatko Vedral

in Introduction to Quantum Information Science

Published in print:
2006
Published Online:
January 2010
ISBN:
9780199215706
eISBN:
9780191706783
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199215706.003.0010
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter discusses how entangled two states are. One obvious way is to consider the distillation procedure, in which the entanglement of any state is quantified by how many fully entangled qubits ... More


Entanglement, computation and quantum measurements

Vlatko Vedral

in Introduction to Quantum Information Science

Published in print:
2006
Published Online:
January 2010
ISBN:
9780199215706
eISBN:
9780191706783
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199215706.003.00012
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter introduces a method that combines the concepts of quantum entanglement with those of quantum algorithms. In particular, some bounds are placed on the efficiency (speedup) of quantum ... More


Quantum error correction

Vlatko Vedral

in Introduction to Quantum Information Science

Published in print:
2006
Published Online:
January 2010
ISBN:
9780199215706
eISBN:
9780191706783
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199215706.003.0013
Subject:
Physics, Theoretical, Computational, and Statistical Physics

Quantum error correction is a very advanced field, and researchers have invested a great deal of time in trying to find the best ways of combating errors in quantum computers, winch occur when the ... More


Quantum mechanics

Vlatko Vedral

in Introduction to Quantum Information Science

Published in print:
2006
Published Online:
January 2010
ISBN:
9780199215706
eISBN:
9780191706783
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199215706.003.0002
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter reviews all the rules of quantum mechanics and their mathematical notation. It also considers quantum entanglement, a fundamental resource in quantum information. There are four basic ... More


Quantum information—the basics

Vlatko Vedral

in Introduction to Quantum Information Science

Published in print:
2006
Published Online:
January 2010
ISBN:
9780199215706
eISBN:
9780191706783
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199215706.003.0003
Subject:
Physics, Theoretical, Computational, and Statistical Physics

Quantum mechanics is a more accurate description of the microscopic world than classical mechanics, and quantum information, which is governed by the laws of quantum mechanics, is a more accurate ... More


Quantum communication with entanglement

Vlatko Vedral

in Introduction to Quantum Information Science

Published in print:
2006
Published Online:
January 2010
ISBN:
9780199215706
eISBN:
9780191706783
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199215706.003.0004
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter discusses some of the ways in which quantum entanglement can be used for quantum communication. Suppose Alice and Bob share an entangled state: they can use it for dense coding, in which ... More


Witnessing quantum entanglement

Vlatko Vedral

in Introduction to Quantum Information Science

Published in print:
2006
Published Online:
January 2010
ISBN:
9780199215706
eISBN:
9780191706783
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199215706.003.0008
Subject:
Physics, Theoretical, Computational, and Statistical Physics

Quantum entanglement is a key resource in quantum information. Teleportation, dense coding, and many other quantum protocols rely on the existence of entanglement, and would not be possible with just ... More


Strangeness and power of the quantum

Serge Haroche and Jean-Michel Raimond

in Exploring the Quantum: Atoms, Cavities, and Photons

Published in print:
2006
Published Online:
January 2010
ISBN:
9780198509141
eISBN:
9780191708626
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198509141.003.0002
Subject:
Physics, Atomic, Laser, and Optical Physics

This chapter describes the non-classical aspects of the quantum theory. The strangeness of the quantum can be traced back to the superposition principle rooted in the linearity of quantum theory. ... More


Nonlinear oscillators and high fidelity qubit state measurement in circuit quantum electrodynamics

E. Ginossar, L. S. Bishop, and S. M. Girvin

in Fluctuating Nonlinear Oscillators: From Nanomechanics to Quantum Superconducting Circuits

Published in print:
2012
Published Online:
September 2012
ISBN:
9780199691388
eISBN:
9780191742255
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199691388.003.0008
Subject:
Physics, Theoretical, Computational, and Statistical Physics

This chapter analyzes the high excitation nonlinear response of the Jaynes–Cummings model in quantum optics when the qubit and cavity are strongly coupled. It studies the response in the parameter ... More


Quantum Physics Takes Free Will into Account

Ignacio Cirac and Adolfo Plasencia

in Is the Universe a Hologram?: Scientists Answer the Most Provocative Questions

Published in print:
2017
Published Online:
January 2018
ISBN:
9780262036016
eISBN:
9780262339308
Item type:
chapter
Publisher:
The MIT Press
DOI:
10.7551/mitpress/9780262036016.003.0001
Subject:
Society and Culture, Technology and Society

In this dialogue, the physicist Ignacio Cirac, director of the Theoretical Division of the Max Planck Institute for Quantum Optics, outlines why quantum physics has brought about a much greater ... More


Tunnel junctions with superconductors

Tero T. Heikkilä

in The Physics of Nanoelectronics: Transport and Fluctuation Phenomena at Low Temperatures

Published in print:
2013
Published Online:
December 2013
ISBN:
9780199592449
eISBN:
9780191747618
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199592449.003.0009
Subject:
Physics, Condensed Matter Physics / Materials

Tunnel junctions connecting superconductors to each other or to normal metals allow for a controlled study of non-linear charge transport effects. This chapter explains the diverse transport ... More


Schrödinger cat states in circuit QED

Steven M. Girvin

in Current Trends in Atomic Physics

Published in print:
2019
Published Online:
July 2019
ISBN:
9780198837190
eISBN:
9780191873973
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198837190.003.0011
Subject:
Physics, Atomic, Laser, and Optical Physics, Particle Physics / Astrophysics / Cosmology

Circuit quantum electrodynamics (‘circuit QED’) describes the quantum mechanics and quantum optics of superconducting electrical circuits operating in the microwave regime near absolute zero ... More


Quantum Information Theory

Christopher G. Timpson

in Quantum Information Theory and the Foundations of Quantum Mechanics

Published in print:
2013
Published Online:
September 2013
ISBN:
9780199296460
eISBN:
9780191741791
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199296460.003.0003
Subject:
Philosophy, Philosophy of Science

The approach to thinking about information developed in the previous chapter is turned towards the quantum theory. First, some of the characteristic ideas and applications of quantum information ... More


EPR and Bell’s theorem, and quantum algorithms

Ian R. Kenyon

in Quantum 20/20: Fundamentals, Entanglement, Gauge Fields, Condensates and Topology

Published in print:
2019
Published Online:
November 2019
ISBN:
9780198808350
eISBN:
9780191846052
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198808350.003.0010
Subject:
Physics, Theoretical, Computational, and Statistical Physics, Particle Physics / Astrophysics / Cosmology

EPR showed that quantum mechanics is not a local deterministic theory and on this account they argued that it is incomplete. Quantum mechanics predicts correlations over time-like separations. The ... More


Superconductivity

Ian R. Kenyon

in Quantum 20/20: Fundamentals, Entanglement, Gauge Fields, Condensates and Topology

Published in print:
2019
Published Online:
November 2019
ISBN:
9780198808350
eISBN:
9780191846052
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198808350.003.0015
Subject:
Physics, Theoretical, Computational, and Statistical Physics, Particle Physics / Astrophysics / Cosmology

Superconductivity and the associated Meissner effect are introduced, indicating that superconductors are perfect diamagnetics. Condensation energy is deduced. The London analysis showing how ... More


Coupling Superconducting Qubits to Electromagnetic and Piezomechanical Resonators

Andrew N. Cleland

in Quantum Optomechanics and Nanomechanics: Lecture Notes of the Les Houches Summer School: Volume 105, August 2015

Published in print:
2020
Published Online:
April 2020
ISBN:
9780198828143
eISBN:
9780191866920
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198828143.003.0006
Subject:
Physics, Atomic, Laser, and Optical Physics

Quantum bits have been under intense development since the late 1990s, due to the discovery of a number of potential applications for engineered quantum systems to problems in computation or ... More


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