Higher-order squeezing for the codirectional Kerr nonlinear coupler

Details Higher-order squeezing for the codirectional Kerr nonlinear coupler Higher-order squeezing for the codirectional Kerr nonlinear coupler

2009-07-29

arxiv.org/abs/0907.5085v1

Phys. Lett. A 333 (2004) 204-211

Physics

Quantum Physics

13 pages, 3 figures

Scientific paper

In this Letter we study the evolution of the higher-order squeezing, namely, $n$th-order single-mode squeezing, sum- and difference-squeezing for the codirectional Kerr nonlinear coupler. We show that the amount of squeezing decreases when $n$, i.e. the squeezing order, increases. For specific values of the interaction parameters squeezing factors exhibit a series of revival-collapse phenomena, which become more pronounced when the value of $n$ increases. Sum-squeezing can provide amounts of squeezing greater than those produced by the $n$th higher-order ($n\geq 2$) squeezing for the same values of interaction parameters and can map onto amplitude-squared squeezing. Further, we prove that the difference-squeezing is not relevant measure for obtaining information about squeezing from this device.

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