Entanglement Transfer Between Cavity Fields and Excitons in a Driven Quantum Dot System |
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Authors: | ZENG Tian-Hai SHAO Bin ZOU Jian |
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Institution: | Department of Physics, Beijing Institute of Technology, Beijing 100081, China |
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Abstract: | We investigate entanglement transfer from two separate cavities to
the excitons in two quantum dots separately placed in the two cavities. The cavity fields and the excitons are treated as two continuous-variable (CV)
subsystems. The time-dependent characteristic functions in the Wigner
representation for the two subsystems are analytically obtained. Under the
conditions that one of the two CV subsystems is initially prepared in a
two-mode squeezed vacuum state and the other in its lowest energy state, we
show that the entanglement reciprocation between the cavity fields and the excitons is realizable. |
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Keywords: | entanglement transfer quantum dot logarithmic negativity |
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