Quantum memory of a squeezed vacuum for arbitrary frequency sidebands
Quantum memory of a squeezed vacuum for arbitrary frequency sidebands
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DOI：
10.1103/physreva.81.021605
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发表时间：
2009-05
影响因子：
2.9
通讯作者：
M. Arikawa;K. Honda;D. Akamatsu;Satoshi Nagatsuka;A. Furusawa;M. Kozuma
中科院分区：
文献类型：
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作者：
M. Arikawa;K. Honda;D. Akamatsu;Satoshi Nagatsuka;A. Furusawa;M. Kozuma
我们开发了一种量子存储器，它完全兼容目前对光的连续变量的量子信息处理，其中可以利用双色电磁感应透明来存储和恢复压缩真空的任意频率边带。将时间宽度为470 ns、压缩能级为-1.78+-0.02d B的压缩真空脉冲的2 MHz边带存储在激光冷却的3{u}S原子中。获得了-0.44±0.02分贝的压缩，这是报道的恢复脉冲的最大压缩。
We have developed a quantum memory that is completely compatible with current quantum information processing for continuous variables of light, where arbitrary frequency sidebands of a squeezed vacuum can be stored and retrieved using bichromatic electromagnetic induced transparency. The 2 MHz sidebands of squeezed vacuum pulses with temporal widths of 470 ns and a squeezing level of -1.78{+-}0.02 dB were stored for 3 {mu}s in laser-cooled {sup 87}Rb atoms. Squeezing of -0.44{+-}0.02 dB, which is the highest squeezing reported for a retrieved pulse, was achieved.