Generation of a macroscopic singlet state in an atomic ensemble

N. Behbood, B. Dubost, M. Napolitano, M. Koschorreck, R. Sewell, G. Tóth, M. Mitchell
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引用次数: 1

Abstract

We report on an experiment underway for generating a singlet state in a cold atomic ensemble. The experiment is based on a recent proposal to generate these states by applying a quantum non-demolition (QND) measurement and feedback to an unpolarized ensemble [1]. Our criteria for generating the singlet state is the spin squeezing parameter equation where Fi are the components of the collective angular momentum, N is the number of atoms and f is the spin of a single particle. Any state with ξs < 1 is an entangled state [2]. Our procedure, described bellow, will lead to a highly entangled state with ξs ≪ 1 starting from a non-entangled state with ξ ∼ 1.
原子系综中宏观单重态的产生
我们报告了在冷原子系综中产生单重态的实验。该实验基于最近的一项提议,即通过对非极化系综[1]应用量子非拆除(QND)测量和反馈来产生这些状态。我们产生单重态的标准是自旋压缩参数方程,其中Fi是集体角动量的分量,N是原子数,f是单个粒子的自旋。任意带ξs <的状态;1是纠缠态[2]。我们的程序如下所述,将从具有ξ ~ 1的非纠缠态开始,导致具有ξs≪1的高度纠缠态。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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