Implementation of a non-deterministic optical noiseless amplifier
| Autor: | Rémi Blandino, Philippe Grangier, Simon Fossier, Marco Barbieri, Franck Ferreyrol, Rosa Tualle-Brouri |
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| Přispěvatelé: | Thales Research and Technology [Palaiseau], THALES, Laboratoire Charles Fabry de l'Institut d'Optique / Optique quantique, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), Franck, Ferreyrol, Barbieri, Marco, Rémi, Blandino, Simon, Fossier, ROSA TUALLE, Brouri, Philippe, Grangier |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
FOS: Physical sciences
General Physics and Astronomy Topology 01 natural sciences Noise (electronics) 010305 fluids & plasmas 010309 optics Optics Homodyne detection [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph] Quantum mechanics 0103 physical sciences medicine Electronic engineering Optical tomography 010306 general physics Quantum information science Quantum ComputingMilieux_MISCELLANEOUS Optical amplifier Physics Quantum optics Quantum Physics medicine.diagnostic_test Unitarity business.industry Amplifier Coherent states Quantum Physics (quant-ph) business Phase modulation Realization (systems) |
| Zdroj: | 7th Workshop on Continuous-Variable Quantum Information Processing 7th Workshop on Continuous-Variable Quantum Information Processing, Jun 2010, Herrsching, Germany Physical Review Letters Physical Review Letters, American Physical Society, 2010, 104, pp.123603. ⟨10.1103/PhysRevLett.104.123603⟩ Conference on Lasers and Electro-optics and Quantum Electronics and Lasers Science Conference (CLEO/QELS 2010) Conference on Lasers and Electro-optics and Quantum Electronics and Lasers Science Conference (CLEO/QELS 2010), May 2010, San Jose, United States 7th Workshop on Continuous-Variable Quantum Information Processing, 2010, Herrsching, Germany |
| ISSN: | 0031-9007 1079-7114 |
| DOI: | 10.1103/PhysRevLett.104.123603⟩ |
| Popis: | International audience; 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 into 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 realisation 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 6dB gain and a noise level significantly smaller than the minimal allowed for any ordinary phase-independent device. |
| Databáze: | OpenAIRE |
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