A Raman memory in rubidium vapor stores squeezed vacuum pulses with up to 24 MHz bandwidth, 80% memory efficiency, and 1.0 dB retrieved squeezing from a 1.6 dB input.
In the part of the memorizer, a87Rbatomic ensemble is initially prepared in the state|5S 1/2,F= 2⟩by a 780 nm pumping laser with FWHM of 45µs
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High-Efficiency Quantum Memory of Full-Bandwidth Squeezed Light
A Raman memory in rubidium vapor stores squeezed vacuum pulses with up to 24 MHz bandwidth, 80% memory efficiency, and 1.0 dB retrieved squeezing from a 1.6 dB input.