منابع مشابه
Coherent Control of Quantum Entropy via Quantum Interference in a Four-Level Atomic System
The time evaluation of quantum entropy in a four-level double- type atomic system is theoretically investigated. Quantum entanglement of the atom and its spontaneous emission fields is then discussed via quantum entropy. It is found that the degree of entanglement can be increased by the quantum interference induced by spontaneous emission. The phase dependence of the atom-field entanglement is...
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The dynamics of a spontaneous downconversion process with the idler mode coupled to an auxiliary mode is analysed. Depending on the presence or absence of nonlinear phase mismatch, a Zeno or anti–Zeno effect is found. This behavior is understood by using the dressed modes picture of the device. A possibility to achieve a quasi–phase– matching by careful adjustment of coupling strength is pointe...
متن کاملcoherent control of quantum entropy via quantum interference in a four-level atomic system
the time evaluation of quantum entropy in a four-level double- type atomic system is theoretically investigated. quantum entanglement of the atom and its spontaneous emission fields is then discussed via quantum entropy. it is found that the degree of entanglement can be increased by the quantum interference induced by spontaneous emission. the phase dependence of the atom-field entanglement is...
متن کاملQuantum repeaters based on atomic ensembles and linear optics
PRL/v98/e113602. Chen, S., Y.-A. Chen, T. Strassel, Z.-S. Yuan, B. Zhao,J. Schmiedmayer, and J.-W. Pan, 2006, Phys. Rev. Lett.97(17), 173004, URL http://link.aps.org/abstract/PRL/v97/e173004.Chen, S., Y.-A. Chen, B. Zhao, Z.-S. Yuan, J. Schmiedmayer,and J.-W. Pan, 2007a, Phys. Rev. Lett. 99(18), 180505, URL http://link.aps.org/abstract/PRL/v99/e180505. Chen, Y.-A., S. Chen, ...
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In this paper, we study the coherent transport of single photon in a coupled resonator waveguide (CRW) where two threelevel Λ-type atomic ensembles are embedded in two separate cavities. We show that it is possible to control the photon transmission and reflection coefficients by using classical control fields. In particular, we find that the total photon transmission and reflection are achieva...
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ژورنال
عنوان ژورنال: Journal of Physics B: Atomic, Molecular and Optical Physics
سال: 2010
ISSN: 0953-4075,1361-6455
DOI: 10.1088/0953-4075/43/8/085502