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The evolution of the input coherent state in the Kerr medium is studied. Upon the derivation we know that the output state at time t which corresponds to a rational number is Schr?dinger's cat state. Using Fourier integral of the evolution operator, we obtain the integral expression of the output state at time t which corresponds to an irrational number. It is a kind of one-dimensional continuous superposition of coherent states, not an ordinary Schr?dinger's cat state. 相似文献
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A matrix method is presented for treating the dynamical phases, adiabatic phases and nonadiabatic phases of quantum superposition states. It is effective for any parameter-varying Hamiltonian system. As two examples, the evolution of mass-varying harmonic oscillator and the evolution of coherent states under parameter-varying displaced operator have been studied, Some new phenomena are obtained in the first case and the possible producing of so-called Schr?dinger's cat state by geometric phases is pointed out. The quantum state useful for the quantum optical verification of Berry's phase is introduced. 相似文献
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A matrix method is presented for treating the dynamical phases, adiabatic phases and nonadiabatic phases of quantum superposition states. It is effective for any parameter-varying Hamiltonian system. As two examples, the evolution of mass-varying harmonic oscillator and the evolution of coherent states under parameter-varying displaced operator have been studied, Some new phenomena are obtained in the first case and the possible producing of so-called Schr?dinger's cat state by geometric phases is pointed out. The quantum state useful for the quantum optical verification of Berry's phase is introduced. 相似文献
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“薛定谔猫”—宏观量子叠加态 总被引：36，自引：1，他引：35
综述了近年来在量子光学方面关于“薛定谔猫”态的研究进展，包括其渊源，定义，制备，性质和可能的应用，“薛定谔猫”态本质上是两个宏观可区分的态相干叠加，它涉及量子力学的基本问题，对样一个问题进行研究，将有助于对量子力学的解释进行探讨。 相似文献
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研究了准恒场驱动谐振子的物理特必。结果表明，以经典方式描述了驱劝光场的位相发生绝热时，在输出光场中会出现几何位相。考虑了位相变化或不变时输出光场的量子态的演化。发现输出场的光子数振荡么及演化的周期行为。 相似文献
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