Steady-state generation of negative-Wigner-function light using feedback
arXiv:1612.00629 · doi:10.1103/PhysRevA.94.063802
Abstract
We propose a method of producing steady-state coherent light with negative Wigner functions in nonlinear media combined with feedback control. While the nonlinearities are essential to produce the Wigner negativities, this alone is insufficient to stabilize steady-state light with negativities. Using feedback control to control the phase in the cavity, we find that this produces significant total negativities for reasonable experimental parameters. The negative Wigner function is produced continuously and does not appear to be restricted to low-amplitude light. The technique is applicable to systems such as exciton-polaritons, where strong natural nonlinearities are present.
9 pages, 9 figures
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- Faraday imaging induced squeezing of a double-well Bose-Einstein condensate
- Cat-state generation and stabilization for a nuclear spin through electric quadrupole interaction
- Wigner-negative states in the steady-state emission of a two-level system driven by squeezed light
- Negative Wigner function by decaying interaction from equilibrium