Implementation of a Nondeterministic Optical Noiseless Amplifier

Ferreyrol, Franck, Barbieri, Marco, Blandino, Remi, Fossier, Simon, Tualle-Brouri, Rosa and Grangier, Philippe (2010) Implementation of a Nondeterministic Optical Noiseless Amplifier. Physical Review Letters, 104 12: . doi:10.1103/PhysRevLett.104.123603

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Author Ferreyrol, Franck
Barbieri, Marco
Blandino, Remi
Fossier, Simon
Tualle-Brouri, Rosa
Grangier, Philippe
Title Implementation of a Nondeterministic Optical Noiseless Amplifier
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 0031-9007
Publication date 2010-03
Year available 2010
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.104.123603
Open Access Status File (Publisher version)
Volume 104
Issue 12
Total pages 4
Place of publication College Park, MD United States
Publisher American Physical Society
Collection year 2010
Language eng
Formatted abstract
 Quantum mechanics imposes that any amplifier that works independently on the phase of the input signal has to introduce some excess noise. The impossibility of such a noiseless amplifier is rooted in the unitarity and linearity of quantum evolution. A possible way to circumvent this limitation is to interrupt such evolution via a measurement, providing a random outcome able to herald a successful—and noiseless—amplification event. Here we show a successful realization of such an approach; we perform
a full characterization of an amplified coherent state using quantum homodyne tomography, and observe a strong heralded amplification, with about a 6 dB gain and a noise level significantly smaller than the minimal allowed for any ordinary phase-independent device.
Keyword Quantum Nondemolition Measurements
Podolsky Rosen Channels
Coherent States
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mathematics and Physics
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Citation counts: TR Web of Science Citation Count  Cited 97 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 105 times in Scopus Article | Citations
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