In the context of quantum information,we investigate extensively some important classes of a general form of a two-qubit system under Lorentz transformation.It is shown Lorentz transformation causes a decay of entangl...In the context of quantum information,we investigate extensively some important classes of a general form of a two-qubit system under Lorentz transformation.It is shown Lorentz transformation causes a decay of entanglement and consequently information loses.On the other hand,it generates entangled states between systems prepared initially in a separable states.The partial entangled states are more robust under Lorentz transformation than maximally entangled states.Therefore the rate of information lose is larger for maximum entangled states compared with that for partially entangled states.展开更多
Bell inequality is violated by the quantum mechanical predictions made from an entangled state of the composite system. In this paper we examine this inequality and entanglement measures in the construction of the coh...Bell inequality is violated by the quantum mechanical predictions made from an entangled state of the composite system. In this paper we examine this inequality and entanglement measures in the construction of the coherent states for two-qubit pure and mixed states, we find a link to some entanglement measures through some new parameters （amplitudes of coherent states）. Conditions for maximal entanglement and separability are then established for both pure and mixed states. Finally, we analyze and compare the violation of Bell inequality for a class of mixed states with the degree of entanglement by applying the formalism of Horodecki et al.展开更多
We study the statistics of the emitted filed from Rydberg atom confined inside a microcavity and interacting with a pump laser in the strong coupling regime. We explore the manifestation of the antibunching in connect...We study the statistics of the emitted filed from Rydberg atom confined inside a microcavity and interacting with a pump laser in the strong coupling regime. We explore the manifestation of the antibunching in connection with the internal system parameters.展开更多
文摘In the context of quantum information,we investigate extensively some important classes of a general form of a two-qubit system under Lorentz transformation.It is shown Lorentz transformation causes a decay of entanglement and consequently information loses.On the other hand,it generates entangled states between systems prepared initially in a separable states.The partial entangled states are more robust under Lorentz transformation than maximally entangled states.Therefore the rate of information lose is larger for maximum entangled states compared with that for partially entangled states.
文摘Bell inequality is violated by the quantum mechanical predictions made from an entangled state of the composite system. In this paper we examine this inequality and entanglement measures in the construction of the coherent states for two-qubit pure and mixed states, we find a link to some entanglement measures through some new parameters （amplitudes of coherent states）. Conditions for maximal entanglement and separability are then established for both pure and mixed states. Finally, we analyze and compare the violation of Bell inequality for a class of mixed states with the degree of entanglement by applying the formalism of Horodecki et al.
文摘We study the statistics of the emitted filed from Rydberg atom confined inside a microcavity and interacting with a pump laser in the strong coupling regime. We explore the manifestation of the antibunching in connection with the internal system parameters.
