Quantum memory for squeezed light
Abstract
We produce a pulse of squeezed vacuum at 795 nm in an optical parametric amplifier and store it in a rubidium vapor cell for 1 us using electromagnetically induced transparency. The recovered pulse is analyzed using time-domain homodyne tomography and exhibits up to 0.28+-0.05 dB of squeezing. Factors leading to the degradation of squeezing are identified and the phase evolution of the atomic coherence during the storage interval is investigated.Keywords
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