Quantum noise limits for nonlinear, phase-invariant amplifiers

Dmitri Kouznetsov; Roberto Ortega-Martínez; Daniel Rohrlich

doi:10.1103/PhysRevA.52.1665

Quantum noise limits for nonlinear, phase-invariant amplifiers

Dmitri Kouznetsov, Roberto Ortega-Martínez, Daniel Rohrlich

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Any quantum device that amplifies coherent states of a field while preserving their phase generates noise. A nonlinear, phase-invariant amplifier may generate less noise, over a range of input field strengths, than any linear amplifier with the same amplification. We present explicit examples of such nonlinear amplifiers and derive lower bounds on the noise generated by a nonlinear, phase-invariant quantum amplifier.

Original language	English
Pages (from-to)	1665-1669
Number of pages	5
Journal	Physical Review A
Volume	52
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevA.52.1665
State	Published - 1 Jan 1995
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1103/PhysRevA.52.1665

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title = "Quantum noise limits for nonlinear, phase-invariant amplifiers",

abstract = "Any quantum device that amplifies coherent states of a field while preserving their phase generates noise. A nonlinear, phase-invariant amplifier may generate less noise, over a range of input field strengths, than any linear amplifier with the same amplification. We present explicit examples of such nonlinear amplifiers and derive lower bounds on the noise generated by a nonlinear, phase-invariant quantum amplifier.",

author = "Dmitri Kouznetsov and Roberto Ortega-Mart{\'i}nez and Daniel Rohrlich",

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AU - Kouznetsov, Dmitri

AU - Ortega-Martínez, Roberto

AU - Rohrlich, Daniel

PY - 1995/1/1

Y1 - 1995/1/1

N2 - Any quantum device that amplifies coherent states of a field while preserving their phase generates noise. A nonlinear, phase-invariant amplifier may generate less noise, over a range of input field strengths, than any linear amplifier with the same amplification. We present explicit examples of such nonlinear amplifiers and derive lower bounds on the noise generated by a nonlinear, phase-invariant quantum amplifier.

AB - Any quantum device that amplifies coherent states of a field while preserving their phase generates noise. A nonlinear, phase-invariant amplifier may generate less noise, over a range of input field strengths, than any linear amplifier with the same amplification. We present explicit examples of such nonlinear amplifiers and derive lower bounds on the noise generated by a nonlinear, phase-invariant quantum amplifier.

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U2 - 10.1103/PhysRevA.52.1665

DO - 10.1103/PhysRevA.52.1665

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SP - 1665

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JO - Physical Review A

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Quantum noise limits for nonlinear, phase-invariant amplifiers

Abstract

ASJC Scopus subject areas

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