Quantum memory for squeezed light.
We produce a 600-ns pulse of 1.86-dB squeezed vacuum at 795 nm in an optical parametric amplifier and store it in a rubidium vapor cell for 1 mus using electromagnetically induced transparency. The recovered pulse, analyzed using time-domain homodyne tomography, exhibits up to 0.21+/-0.04 dB of squeezing. We identify the factors leading to the degradation of squeezing and investigate the phase evolution of the atomic coherence during the storage interval.
Appel
Jürgen
J
Institute for Quantum Information Science, University of Calgary, Calgary, Alberta T2N 1N4, Canada.
Figueroa
Eden
E
Korystov
Dmitry
D
Lobino
M
M
Lvovsky
A I
AI