2014/03/17 by Miao-Xin Wu, Wu, Miao-Xin, Ming-Feng Wang +3
Physics and Astronomy · #FOS: Physical sciences #Quantum Physics (quant-ph) #quant-ph
paper · pdf · doi:10.48550/arxiv.1403.4145
arxiv created 2014/03/17 · arxiv updated 2014/03/18
The ability to efficiently realize storage and readout of optical squeezed states plays a key roll in continuous-variables quantum information processing. Here we study the quantum memory (QM) for squeezed state of propagating light in atoms based on the hybrid photon echo re-phasing (HYPER). The optical quantum state is recorded in two sublevels of the ground state of an atomic ensemble to realize long-lived QM. Taking into account the noise effect due to atomic decay, our estimation indicates that, with currently available technique, high fidelities larger than the classical fidelity threshold 81.5 % are obtainable. Our work provides some practical guidance for realization of efficient and faithful photon-echo-based memory for squeezed light.