Optimal squeezing, pure states, and amplification of squeezing in resonance fluorescence

Details Optimal squeezing, pure states, and amplification of squeezing in resonance fluorescence Optimal squeezing, pure states, and amplification of squeezing in resonance fluorescence

1998-12-30

arxiv.org/abs/quant-ph/9812084v1

Physics

Quantum Physics

6 pages & 7 figures, Submitted to Phys. Rev. A

Scientific paper

10.1103/PhysRevA.59.3745

It is shown that 100% squeezed output can be produced in the resonance fluorescence from a coherently driven two-level atom interacting with a squeezed vacuum. This is only possible for $N=1/8$ squeezed input, and is associated with a pure atomic state, i.e., a completely polarized state. The quadrature for which optimal squeezing occurs depends on the squeezing phase $\Phi ,$ the Rabi frequency $\Omega ,$ and the atomic detuning $\Delta $. Pure states are described for arbitrary $\Phi ,$ not just $\Phi =0$ or $\pi $ as in previous work. For small values of $N,$ there may be a greater degree of squeezing in the output field than the input - i.e., we have squeezing amplification.

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