Volume 82, Number 6, June 2008
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||12 June 2008|
Single molecular magnets as a source of continuous-variable entanglement
Department of Physics, Huazhong University of Science and Technology - Wuhan 430074, PRC
2 Department of Physics, Hubei Normal University - Huangshi, 435002, PRC
3 School of Physics and Information Engineering, Jianghan University - Wuhan 430056, PRC
Accepted: 5 May 2008
We study the generation and evolution of continuous-variable entanglement in a single-molecular-magnets (SMM) system, where the quantum coherence effect is induced by two classical electromagnetic fields (pump and control fields). Our numerical results show that the entanglement of cavity fields can be controlled efficiently by tuning the intensity and frequency detuning of control field, and the macroscopic entangled light with long entanglement time can be realized in this SMM system, over a wide range of initial states of the cavity field. This investigation can be used for achieving the macroscopic entangled light in a solid-state medium, which is much more practical than that in an atomic or molecular medium because of its flexible design.
PACS: 42.50.Dv – Quantum state engineering and measurements / 03.67.Mn – Entanglement measures, witnesses, and other characterizations / 75.50.Xx – Molecular magnets
© EPLA, 2008
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