Frequency conversion of squeezed light

В. Н. Горбачев, Andrew I. Trubilko, D. Parsons

В. Н. Горбачев, Eugene Simon Polzik

Dehuan Kong, Zongyang Li, Shaofeng Wang +2 more

We demonstrate experimentally the quantum frequency down-conversion of a bright amplitude-squeezed optical field via a high efficiency difference frequency generation process. 532 nm amplitude-squeezed light with squeezing of 1.0 dB is successfully translated to 810 nm amplitude-squeezed light with squeezing of 0.8 dB. The effects of amplitude and phase fluctuations of the pump field on the frequency conversion are investigated both theoretically and experimentally. It is shown that the quantum frequency down-conversion is insensitive to small amplitude fluctuations of the pump field at the optimal conversion point. However, the phase fluctuations of the pump field can lead to increase of noise in the phase quadrature of the down-converted field. To eliminate the additive phase noise, a dual frequency down-converter which utilizing common pump field is proposed and demonstrated.

А. В. Белинский, A. S. Chirkin

Federico Presutti, Logan G. Wright, Shi-Yuan Ma +4 more

We demonstrate a source of highly multimode, high gain vacuum squeezed light, and demonstrate how ultra-broadband frequency conversion enables the use of visible-light detector arrays and programmable frequency-domain unitary transformations.

E. Giacobino