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Entanglement induced by a single-mode heat environment

M. S. Kim, J. Lee, D. Ahn, P. L. Knight

quant-pharXiv:quant-ph/0109052

Abstract

A thermal field, which frequently appears in problems of decoherence, provides us with minimal information about the field. We study the interaction of the thermal field and a quantum system composed of two qubits and find that such a chaotic field with minimal information can nevertheless entangle the qubits which are prepared initially in a separable state. This simple model of a quantum register interacting with a noisy environment allows us to understand how memory of the environment affects the state of a quantum register.

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