arXiv:0709.1785 · Physical Review Letters
Storage and Retrieval of a Squeezed Vacuum
Kazuhito Honda, Daisuke Akamatsu, Manabu Arikawa, Yoshihiko Yokoi, K. Akiba, Satoshi Nagatsuka, Takahito Tanimura, Akira Furusawa, Mikio Kozuma
Abstract
Storage and retrieval of a squeezed vacuum was successfully demonstrated using electromagnetically induced transparency. The squeezed vacuum pulse having a temporal width of 930 ns was incident on the laser cooled 87Rb atoms with an intense control light in a coherent state. When the squeezed vacuum pulse was slowed and spatially compressed in the cold atoms, the control light was switched off. After 3 mus of storage, the control light was switched on again, and the squeezed vacuum was retrieved, as was confirmed using the time-domain homodyne method.