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Optical Technique

Dynamics for the system of atoms interacting with coupled cavities

Qiu Chang-dong

Published Jan 1, 2011• 0 citations
OpenAlex

Abstract

The one-excitation dynamics for the system comprising two two-level atoms resonantly interacting with two coupled cavities is studied.The evolution of the state vector of the system is given.The excitation evolutions of atom 1,atom 2,cavity A and cavity B are investigated.The influences of coupling constant between cavities on the dynamics are discussed.The results show that the excitations of atoms increase,and the excitations of cavity A and cavity B decrease with increasing of the coupling constant between cavities.

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The one-excitation dynamics for the system comprising two two-level atoms resonantly interacting with two coupled cavities is studied.The evolution of the state vector of the system is given.The excitation evolutions of atom 1,atom 2,cavity A and cavity B are investigated.The influences of coupling constant between cavities on the dynamics are discussed.The results show that the excitations of atoms increase,and the excitations of cavity A and cavity B decrease with increasing of the coupling constant between cavities.
We study the one-excitation dynamics for the system comprising two two-level atoms resonantly interacting with two coupled cavities.The evolution of the atom's occupancy is investigated.The influences of coupling constant between cavities on the evolution of the atom's occupancy are discussed.The results obtained show that the evolution of the atom's occupancy displays collapse and revival effect when the coupling constant between cavities is much smaller than coupling constant between atom and cavity,and it displays periodicity when the coupling constant between cavities is much larger than coupling constant between atom and cavity.
The two-excitation system comprising two two-level atoms resonantly interacting with two coupled cavities is analyzed.The evolution of the state vector of the system is given when the total excitation number equals two.By means of the numerical calculations,the temporal evolution in the entanglement is investigated between the atoms,between the cavities,as well as between the atom and the local cavity mode.The influences of coupling constant between cavities on the entanglements are discussed.The results obtained show that atom and atom are separable,and the cavity-cavity entanglement and the atom-cavity entanglement are weakened with increasing of the coupling constant between cavities.
We study the entanglement dynamics of the system composed of two two-level atoms resonantly interacting with two coupled cavities. The evolutions of atom-atom entanglement, cavity-cavity entanglement and atom-cavity entanglement are investigated. The influence of coupling constant between cavities on entanglement property is discussed. The numerical results show that atom-atom entanglement property is strengthened while atom-cavity entanglement property and cavity-cavity entanglement property are weakened with the increasing of the coupling constant between cavities.
We study the two-excitation system comprising two two-level atoms resonantly interacting with two coupled cavities.The evolution of the state vector of the system is given.By means of the numerical calculations,we investigate the evolution of the second-order correlation function of the field and that of Mandel Q function.The influences of coupling constant between cavities and state-selective measurement of the atom on the second-order correlation function and Mandel Q function are discussed.The results obtained show that the second-order correlation function or Mandel Q function has a nonlinear relation with increasing of the cavity-cavity coupling coefficient.On the other hand,the sub-Poissonian distribution of the field can be strengthened through the state-selective measurement on the atom.
We study the entanglement dynamics of the system composed of a Λ-type atom and a V-type atom resonantly interacting with two coupled cavities. The evolution of the state vector of the system is given. We investigate the evolutions of atom-atom entanglement, cavity-cavity entanglement, and atom-cavity entanglement by Negativity. The influences of cavity-cavity coupling coefficient on the entanglements are discussed. The results obtained by the numerical method show that the atom-atom entanglement is strengthened and the cavity-cavity entanglement is weakened with the increase of the cavity-cavity coupling coefficient.
The entanglement dynamics of the system composed of three two-level atoms resonantly interacting with three coupled cavities is investigated in this paper. The influence of coupling constant between cavities on the entanglement between atoms and that between cavities are discussed. The results obtained using the numerical method show that the entanglement between atoms has a nonlinear relation with increase of the cavity-cavity coupling coefficient. On the other hand, the entanglement between cavity A and cavity B and the entanglement between cavity B and cavity C weaken with the increase of the coupling constant between cavities, but the entanglement between cavity A and cavity C strengthens with the increase of cavity-cavity coupling coefficient.