Entanglement and Entropy Engineering of Atomic Two-Qubit States

S. G. Clark and A. S. Parkins
Phys. Rev. Lett. 90, 047905 – Published 31 January 2003

Abstract

We propose a scheme employing quantum-reservoir engineering to controllably entangle the internal states of two atoms trapped in a high-finesse optical cavity. Using laser and cavity fields to drive two separate Raman transitions between stable atomic ground states, a system is realized corresponding to a pair of two-state atoms coupled collectively to a squeezed reservoir. Phase-sensitive reservoir correlations lead to entanglement between the atoms, and, via local unitary transformations and adjustment of the degree and purity of squeezing, one can prepare entangled mixed states with any allowed combination of linear entropy and entanglement of formation.

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  • Received 26 March 2002

DOI:https://doi.org/10.1103/PhysRevLett.90.047905

©2003 American Physical Society

Authors & Affiliations

S. G. Clark and A. S. Parkins

  • Department of Physics, University of Auckland, Private Bag 92019, Auckland, New Zealand

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Vol. 90, Iss. 4 — 31 January 2003

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