Quantum Zeno and anti-Zeno effects on quantum and classical correlations

Details Quantum Zeno and anti-Zeno effects on quantum and classical correlations Quantum Zeno and anti-Zeno effects on quantum and classical correlations

2010-11-22

arxiv.org/abs/1011.4761v1

Phys. Rev. A 82, 052118 (2010)

Physics

Quantum Physics

Scientific paper

In this paper we study the possibility of modifying the dynamics of both quantum correlations, such as entanglement and discord, and classical correlations of an open bi-partite system by means of the quantum Zeno effect. We consider two qubits coupled to a common boson reservoir at zero temperature. This model describes, for example, two atoms interacting with a quantized mode of a lossy cavity. We show that, when the frequencies of the two atoms are symmetrically detuned from that of the cavity mode, oscillations between Zeno and anti-Zeno regimes occur. We also calculate analytically the time evolution of both classical correlations and quantum discord, and we compare the Zeno dynamics of entanglement with the Zeno dynamics of classical correlations and discord.

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