Work

Quantum noise limits for nonlinear, phase-invariant amplifiers

Year: 1995

Type: article

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.

Source: Physical Review A

DOI: 10.1103/physreva.52.1665

Authors: Dmitri Kouznetsov, Roberto Ortega-Martínez, Daniel Rohrlich

Institutions: P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Universidad Nacional Autónoma de México, Tel Aviv University

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2054967762

FWCI: 1.432

Cites: 9

Cited by: 9

Related to: 10