Quantum feedback by discrete quantum non-demolition measurements: towards on-demand generation of photon-number states

Autor:	Dotsenko, I., Mirrahimi, M., Brune, M., Haroche, S., Raimond, J. -M., Rouchon, P.
Rok vydání:	2009
Předmět:	Quantum Physics
Zdroj:	Phys. Rev. A 80, 013805 (2009)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.80.013805
Popis:	We propose a quantum feedback scheme for the preparation and protection of photon number states of light trapped in a high-Q microwave cavity. A quantum non-demolition measurement of the cavity field provides information on the photon number distribution. The feedback loop is closed by injecting into the cavity a coherent pulse adjusted to increase the probability of the target photon number. The efficiency and reliability of the closed-loop state stabilization is assessed by quantum Monte-Carlo simulations. We show that, in realistic experimental conditions, Fock states are efficiently produced and protected against decoherence. Comment: 8 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0905.0114 Zobrazit plný text záznamu View this record from Arxiv