Title :
Quantum state protection with quantum feedback schemes
Author :
Vitali, David ; Zippilli, Stefano ; Tombesi, Paolo ; Raimond, J.-M.
Author_Institution :
Dipt. di Fisica & Unita INFM, Univ. di Camerino, Italy
Abstract :
We present a scheme able to protect the quantum states of a cavity mode against the decohering effects of photon loss. The scheme preserves quantum states with a definite parity, and it is implemented by sending single atoms, one by one, through the cavity. By solving numerically the exact master equation of the system we show that the protection of simple quantum states could be experimentally demonstrated using presently available experimental apparatus.
Keywords :
feedback; master equation; measurement theory; photon counting; quantum electrodynamics; quantum theory; Fock states; cavity mode; closed-loop schemes; decoherence effects; exact master equation; microwave cavity QED; photon counting; photon loss; quantum feedback schemes; quantum state protection; single atoms; Actuators; Atomic measurements; Control systems; Encoding; Equations; Feedback loop; Open loop systems; Petroleum; Protection; State feedback;
Conference_Titel :
Physics and Control, 2003. Proceedings. 2003 International Conference
Print_ISBN :
0-7803-7939-X
DOI :
10.1109/PHYCON.2003.1237012
