Publication Date:
2017-10-03
Description:
The strong light–matter coupling attainable in optical cavities enables the generation of highly squeezed states of atomic ensembles. It was shown by Sørensen and Mølmer (2002 Phys. Rev. A 66 022314) how an effective one-axis twisting Hamiltonian can be realized in a cavity setup. Here, we extend this work and show how an effective two-axis twisting Hamiltonian can be realized in a similar cavity setup. We compare the two schemes in order to characterize their advantages. In the absence of decoherence, the two-axis Hamiltonian leads to more squeezing than the one-axis Hamiltonian. If limited by decoherence from spontaneous emission and cavity decay, we find roughly the same level of squeezing for the two schemes scaling as ##IMG## [http://ej.iop.org/images/1367-2630/19/9/093021/njpaa8438ieqn1.gif] {$\sqrt{{NC}}$} where C is the single atom cooperativity and N is the total number of atoms. When compared to an ideal squeezing opera...
Electronic ISSN:
1367-2630
Topics:
Physics
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