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The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meeting

Robust Control of Entanglement by Quantum-Jump Based Feedback

Andre R. R. Carvalho, J. J. Hope

Published Jan 1, 2007• 0 citations
Publisher

Abstract

We present a feedback strategy, based on quantum-jump detection, to generate highly entangled steady states. The scheme overcomes spontaneous emission effects, and is robust against detection inefficiencies and errors in the control Hamiltonian.
DOI
10.1364/cqo.2007.jwc21

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A robust and scalable scheme to generate a steady three-dimensional entangled state for a V-type atom and a Λ-type atom trapped in a strongly dissipative bimodal cavity is proposed by direct feedback control based on quantum-jump detection. The robustness of this scheme reflects in the insensitivity to detection inefficiencies and the strong ability against the parameter fluctuations in the feedback, driving, and coupling strengths. The influence of atomic spontaneous emission can be suppressed by using the local feedback control. The scalability is ensured that N -dimensional entangled states of two atoms can be deterministically generated.
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