Squeezed light in an optical parametric oscillator network with coherent feedback quantum control.

  title={Squeezed light in an optical parametric oscillator network with coherent feedback quantum control.},
  author={Orion Crisafulli and Nikolas Tezak and Daniel B. S. Soh and M. Armen and Hideo Mabuchi},
  journal={Optics express},
  volume={21 15},
We present squeezing and anti-squeezing spectra of the output from a degenerate optical parametric oscillator (OPO) network arranged in different coherent quantum feedback configurations. One OPO serves as a quantum plant, the other as a quantum controller. The addition of coherent feedback enables shaping of the output squeezing spectrum of the plant, and is found to be capable of pushing the frequency of maximum squeezing away from the optical driving frequency and broadening the spectrum… CONTINUE READING
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