Dynamics and Protecting of Entanglement in Two-Level Systems Interacting with a Dissipative Cavity: The Gardiner-Collett Approach

Abstract

In this paper, we study the exact entanglement dynamics of two two-level atoms in a dissipative cavity. We use the Gardiner-Collett Hamiltonian to model the dissipative cavity, in which, we assume that the two atoms resonantly interact with the cavity field and the cavity field itself interacts with the surrounding medium. Then, with the help of the Fano's technique, we show that, this system can be regarded as two atoms interacting with a heat bath. In such a case, we find that, there exists a decoherence-free state that does not evolve in time. At this time, there exists a so-called super-radiant state which decays in time due to dissipation. At last, we use the quantum Zeno effect to preserve the entanglement which already has been stored in the system.

arXiv comment15 pages, 4 fidures

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• Entanglement Swapping Between Dissipative Systems
• Entanglement dynamics of an arbitrary number of moving qubits in a common environment
• Generation of long-living entanglement between two distant three-level atoms in non-Markovian environments
• Enforcing dissipative entanglement by feedback
• Entanglement dynamics of an open moving-biparticle system driven by classical-field
• Qubit Movement-Assisted Entanglement Swapping
• Entanglement Dynamics of Two V-type Atoms with Dipole-Dipole Interaction in Dissipative Cavity
• Controlling Quantum Coherence of V-type Atom in Dissipative Cavity by Detuning and Weak Measurement Reversal