We have developed a quantum memory technique 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. 2MHz sidebands of squeezed vacuum pulses with temporal widths of 470ns and a squeezing level of -1.78 +- 0.02dB were stored for 3us in the laser-cooled 87Rb atoms. -0.44 +- 0.02dB of squeezing was retrieved, which is the highest squeezing ever reported for a retrieved pulse.
@article{arxiv.0905.2816,
title = {Quantum memory of a squeezed vacuum for arbitrary frequency sidebands},
author = {Manabu Arikawa and Kazuhito Honda and Daisuke Akamatsu and Satoshi Nagatsuka and Akira Furusawa and Mikio Kozuma},
journal= {arXiv preprint arXiv:0905.2816},
year = {2015}
}