International Journal of Quantum Information

COLLAPSE AND REVIVAL OF ATOMIC ENTANGLEMENT IN AN INTENSITY DEPENDENT JAYNES–CUMMINGS INTERACTION

Papri Saha, A. S. Majumdar, Sudha Singh, N. Nayak

Published Dec 1, 2010• 9 citations

Abstract

The evolution of entanglement of a bipartite spin-1/2 system coupled to a micromaser cavity field in an intensity-dependent Jaynes–Cummings model is studied in this paper. The dynamical process of the entanglement is investigated for different cavity fields. We find that the interactions lead to a phenomenon of periodic entanglement and disentanglement between the qubits. Effects such as the growth of the magnitude of atomic entanglement with the increase of the cavity photon number, arising out of the intensity-dependent atom-cavity coupling lead to interesting dissimilarities from the case of entanglement generated by the standard Jaynes–Cummings interaction.

DOI: 10.1142/s0219749911006818

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