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Maximally Entangled State Generation Between Atomic Ensembles Using Adaptive Quantum Nondemolition Measurements

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Abstract

We develop a scheme to prepare a macroscopic maximally entangled state (MMES) between two atomic ensembles. The quantum state of system is evolved using a sequence of quantum nondemolition (QND) measurements followed by adaptive unitaries in z and x spin basis alternately. This procedure is repeated such that the state converges deterministically towards the MMES.

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