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12 papers · 1 filter
New n-mode squeezing operator and squeezed states with standard squeezing
Li-yun Hu, Hong-yi Fan
We find that the exponential operator V=exp[ilamda (Q_1P_2+Q_2P_3+...+Q_{n-1}P_{n}+Q_{n}P_1)], Q_{i}, P_{i} are respectively the coordinate and momentum operators, is an n-mode squ…
Symplectic-dilation mixed wavelet transform and its correspondence in quantum optics
Hong-yi Fan, Shu-guang Liu, Li-yun Hu
The symplectic wavelet transformation [Opt. Lett. 31 (2006) 3432], which is related to quantum optical Fresnel transform, is developed to the symplectic-dilation mixed wavelet tran…
Geometric interpretation for A-fidelity and its relation with Bures fidelity
Zhihao Ma, Fu-Lin Zhang, Jing-Ling Chen
A geometric interpretation for the A-fidelity between two states of a qubit system is presented, which leads to an upper bound of the Bures fidelity. The metrics defined based on t…
Entangled state for constructing generalized phase space representation and its statistical behavior
Li-yun Hu, Hong-yi Fan
Based on the conception of quantum entanglement of Einstein-Podolsky-Rosen we construct generalized phase space representation associated with the entangled state |Gamma>_{e}, whic…
Quantum Zeno and Anti-Zeno Effect without Rotating Wave Approximation
H. Zheng, S. Y. Zhu
The effect of the anti-rotating terms on the short-time evolution and the quantum Zeno (QZE) and anti-Zeno (AQZE) effects is studied for a two-level system coupled to a bosonic env…
Non-local dynamics of Bell states in separate cavities
Jun Jing, Zhi-guo Lü, Guo-hong Yang
We present non-local dynamics of Bell states in separate cavities. It is demonstrated that (i) the entanglement damping speed will saturate when the cavity leakage rate …