Surpassing the no-cloning limit with a heralded hybrid linear amplifier for coherent states

Autor: Jing Yan Haw, Jie Zhao, Josephine Dias, Syed M. Assad, Mark Bradshaw, Rémi Blandino, Thomas Symul, Timothy C. Ralph, Ping Koy Lam

Publikováno v: Nature Communications, Vol 7, Iss 1, Pp 1-7 (2016)

Cloning an unknown quantum state is challenging and the limit on the quality of clones is set by the no-cloning theorem. Here, the authors demonstrated the surpassing of such a limit using an effective quantum cloner based on a hybrid probabilistic-d

Externí odkaz: https://doaj.org/article/dce4be4cbfe842b185cb6f3a361aa2ad

Quantum enhancement of signal-to-noise ratio with a heralded linear amplifier

Autor: Syed M. Assad, Thomas Symul, Ping Koy Lam, Mark Bradshaw, Jie Zhao, Josephine Dias, Rémi Blandino, Jing Yan Haw, Timothy C. Ralph

Due to the pervasive nature of decoherence, protection of quantum information during transmission is of critical importance for any quantum network. A linear amplifier that can enhance quantum signals stronger than their associated noise while preser

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98a9fdde381a02da5a2fde67d1df5779

Surpassing the no-cloning limit with a heralded hybrid linear amplifier

Autor: Thomas Symul, Josephine Dias, Rémi Blandino, Jie Zhao, Timothy C. Ralph, Syed M. Assad, Mark Bradshaw, Ping Koy Lam, Jing Yan Haw

Publikováno v: 2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR).

The no-cloning theorem states that an unknown quantum state cannot be cloned exactly and deterministically. However, this limit can be circumvented by abandoning determinism and using probabilistic methods. Here, we report an experimental demonstrati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8a339cbf7fd130938dfdf70cdf9345d9
https://doi.org/10.1109/cleopr.2017.8119040

Heralded noiseless linear amplification and quantum channels

Autor: Marco Barbieri, Rosa Tualle-Brouri, Rémi Blandino, Philippe Grangier

Publikováno v: Physical Revieuw A
Physical Revieuw A, 2015, 91 (6), pp.062305. ⟨10.1103/PhysRevA.91.062305⟩

International audience; The employ of a heralded noiseless linear amplifier has been proven as a useful tool for mitigating imperfections in quantum channels. Its analysis is usually conducted within specific frameworks, for which the set of input st

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::622a41ffd16b024e36af870a495791e9
https://doi.org/10.1103/physreva.91.062305

Implementation of a non-deterministic optical noiseless amplifier

Autor: Rémi Blandino, Philippe Grangier, Simon Fossier, Marco Barbieri, Franck Ferreyrol, Rosa Tualle-Brouri

Publikováno v: 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

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

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2258bf41461566c9b9114066828a5c33
https://hal.archives-ouvertes.fr/hal-00822465