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  物理学   9篇
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1.
By means of thermal field dynamics theory, we study the quantum fluctuations of two LC circuits with mutual inductance at a finite temperature.  相似文献
2.
By using two two-mode Einstein–Podolsky–Rosen (EPR) pair eigenstates or two two-mode squeezed states as quantum channels we study the quantum teleportation of any form of two-mode quantum states, which conclude discrete and continuous variable quantum states.  相似文献
3.
We study the quantization of a mesoscopic capacitance coupling circuit with resistances, derive the density matrix of the system, and study the influence of temperature on the fluctuation of the system.  相似文献
4.
We construct two new kinds of parametrized entangled states in two-mode Fock space. Using the technique of integration within an ordered product of operators, we prove that they span the complete space. Their applications to solving dynamic problems and finding new generalized squeezing are addressed.  相似文献
5.
We constructed a normalizable q-analogue of squeezed vacuum state using the technique of integration within an ordered product (IWOP) of operators and the properties of the inverses of q-deformed creation and annihilation operatots. We also study its nonclassical properties and phase probability distribution.  相似文献
6.
We introduce a supersymmetric unitary transformation, to diagonalize the multiphoton Jaynes–Cummings model Hamiltonian based on supersymmetric quantum mechanics theory, that includes any forms of intensity-dependent coupling and field nonlinearity. On doing so, we obtain its eigenvalue and eigenstates, and the time evolution of state vector.  相似文献
7.
By means of the thermal field dynamics theory invented by Takahashi and Umezawa, we study the quantum effects of a nondissipative mesoscopic RLC circuit at a finite temperature.  相似文献
8.
We study continuous quantum measurements (CQM) of energy of an open quantum system by Lindblad master equation. It turns out that the time-dependence of decoherence is identified. We conclude that the CQM of energy accelerate quantum decoherence. Sponsored by K.C. Wong Magna Fund in Ningbo University.  相似文献
9.
We introduce the three-mode nonlinear Bogoliubov transformations based on the work of Siena et al. (Phys. Rev. A 64:063803, 2001) and Ying Wu (Phys. Rev. A 66:025801, 2002) about nonlinear Bogoliubov transformations. We show that three-mode nonlinear Bogoliubov transformations can be constructed by the combination of two unitary transformations, a coordinate-dependent displacement followed by the standard squeezed transformation. Such decomposition turns all the nonlinear canonic coordinate-dependent Bogoliubov transformations into essentially linear problems as we shall prove and hence greatly facilitate calculations of the properties and the quantities related to the nonlinear transformations.  相似文献
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