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## Quantum information

*J. C. Garrison and R. Y. Chiao*

### in Quantum Optics

- Published in print:
- 2008
- Published Online:
- September 2008
- ISBN:
- 9780198508861
- eISBN:
- 9780191708640
- Item type:
- chapter

- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780198508861.003.0021
- Subject:
- Physics, Atomic, Laser, and Optical Physics

This chapter addresses quantum information transmission and processing. Quantum noise is dominant in long-haul transmission lines, even for strong signals. Amplifier noise is avoided by using a ... More

## Communication

*Jochen Rau*

### in Quantum Theory: An Information Processing Approach

- Published in print:
- 2021
- Published Online:
- July 2021
- ISBN:
- 9780192896308
- eISBN:
- 9780191918865
- Item type:
- chapter

- Publisher:
- Oxford University Press
- DOI:
- 10.1093/oso/9780192896308.003.0005
- Subject:
- Physics, Theoretical, Computational, and Statistical Physics, Condensed Matter Physics / Materials

This chapter introduces the notions of classical and quantum information and discusses simple protocols for their exchange. It defines the entropy as a quantitative measure of information, and ... More

## Quantum Information, Quantum Cryptography, and Quantum Teleportation

*Christopher C. Gerry and Kimberley M. Bruno*

### in The Quantum Divide: Why Schrödinger's Cat is Either Dead or Alive

- Published in print:
- 2013
- Published Online:
- May 2013
- ISBN:
- 9780199666560
- eISBN:
- 9780191748646
- Item type:
- chapter

- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199666560.003.0006
- Subject:
- Physics, Atomic, Laser, and Optical Physics

This chapter discusses quantum information science (QIS), quantum key distribution (QKD), and quantum teleportation. The new field of QIS encompasses several overlapping subdisciplines: quantum ... More

## Quantum Secure Communication

*M. Suhail Zubairy*

### in Quantum Mechanics for Beginners: With Applications to Quantum Communication and Quantum Computing

- Published in print:
- 2020
- Published Online:
- June 2020
- ISBN:
- 9780198854227
- eISBN:
- 9780191888649
- Item type:
- chapter

- Publisher:
- Oxford University Press
- DOI:
- 10.1093/oso/9780198854227.003.0013
- Subject:
- Physics, Particle Physics / Astrophysics / Cosmology, Theoretical, Computational, and Statistical Physics

Cryptography is a method of secure communication between two or more parties. The crucial step is exchanging a key in a secure manner. There are, however, two problems with conventional cryptography. ... 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

## The Work Continues

*Andrew Whitaker*

### in John Stewart Bell and Twentieth-Century Physics: Vision and Integrity

- Published in print:
- 2016
- Published Online:
- August 2016
- ISBN:
- 9780198742999
- eISBN:
- 9780191802959
- Item type:
- chapter

- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780198742999.003.0006
- Subject:
- Physics, History of Physics

Since Bell’s death, interest in his work and quantum foundations in general, and the amount of application of his work, have grown steadily. Work on Bell’s inequality has continued, each loophole has ... More

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