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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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