Počet záznamů: 1
Entanglement-based linear-optical qubit amplifier
- 1.0424180 - FZÚ 2014 RIV US eng J - Článek v odborném periodiku
Meyer-Scott, E. - Bula, M. - Bartkiewicz, K. - Černoch, Antonín - Soubusta, Jan - Jennewein, T. - Lemr, Karel
Entanglement-based linear-optical qubit amplifier.
Physical Review. A. Roč. 87, č. 1 (2013), "012327-1"-"012327-7". ISSN 1050-2947
Grant CEP: GA ČR GAP205/12/0382
Institucionální podpora: RVO:68378271
Klíčová slova: quantum physics * photonics qubits * qubit amplifier
Kód oboru RIV: BH - Optika, masery a lasery
Impakt faktor: 2.991, rok: 2013
We propose a linear-optical scheme for an efficient amplification of a photonic qubit based on interaction of the signal mode with a pair of entangled ancillae. In contrast to a previous proposal for qubit amplifier by Gisin et al. [Phys Rev. Lett. 105, 070501 (2010)], the success probability of our device does not decrease asymptotically to zero with increasing gain. Moreover, we show how the device can be used to restore entanglement deteriorated by transmission over a lossy channel and calculate the secure key rate for device-independent quantum key distribution.
Trvalý link: http://hdl.handle.net/11104/0230199
Počet záznamů: 1