压缩自旋态和伪厄米算符

Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society Pub Date : 2005-12-01 DOI:10.1088/1464-4266/7/12/047

N. Nayak, R. N. Deb, B. Dutta-Roy

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引用次数: 6

摘要

我们证明了通过非线性相互作用获得的压缩自旋态是一个非厄米算子的本征态，然而，它具有伪厄米算子的性质，使得得到的本征值是实数。我们用维格纳d矩阵表示压缩状态，使压缩的评估变得简单。我们证明了自旋压缩可以达到70%。

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Squeezed spin states and pseudo-Hermitian operators

We show that squeezed spin states achieved through nonlinear interactions are eigenstates of a non-Hermitian operator, which however enjoys the property of pseudo-Hermiticity such that the resulting eigenvalues are real. We represent the squeezed states in terms of Wigner d-matrices, making the evaluation of squeezing straightforward. We show that the spin squeezing can go up to 70%.

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Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society

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