并对这两种纠缠相干态进行了讨论。
本章首先介绍了计算纠缠相干态量子非局域性的两种通用方法。
This part introduces two general methods to calculate the quantum nonlocality of entangled coherent states.
通过适当设置初始相干态的振幅，该方案可以使转移后的纠缠相干态处于最大纠缠态。
By suitably choosing the amplitude of the initial coherent states, we can obtain the maximum entangled coherent states.
我们的研究表明，当纠缠相干态处于非最大纠缠态时， 我们可以通过增大激发的程度来提高此方案的保真度。
Thus, for both theoretical and experimental reasons it has become interesting to investigate the entanglement of photon-added entangled coherent states and their applications to quantum teleportation.
讨论了利用两能级原子和相干态腔场相互作用制备纠缠相干态的方法；提出了一个关于纠缠相干态的纠缠转移的方案。
An experimentally feasible protocol for realizing entanglement diversion of the entangled coherent states by using a two-level atom interacting with caving fields is proposed.
第四章研究了纠缠相干态作为分束器的输入态时，分束器对光场纠缠、反聚束、单模压缩、和压缩、差压缩等非经典特性的影响。
We show that the entanglement is affected by the BS when the input state of the BS is the entangled coherent state (ECS).
若分别以真空态和奇或偶相干态作为分束器的两个输入态，得到的输出态具有量子纠缠性质。
When vacuum state is injected into one input port while odd coherent state is injected into another, quantum entanglement is generated at the output ports.
将散粒噪声用于检测纠缠态对量子计算具有重要的意义，自旋相干输运的检测是自旋电子学的重要研究课题。
The entanglement detection based on the shot noise is important to the quantum computation, and the spin coherence transport detection is a necessary subject of spintronics.
在实现信息处理的过程中，量子态叠加原理、量子纠缠和量子退相干等基本原理和基本概念应当充分考虑。
Some fundamental principles, such as the principle of quantum state superposition, quantum entangled state and quantum decoherence etc.
结果表明，利用二项式光场的特性，可以揭示从相干态到数态之间的所有态光场与三能级原子相互作用时的量子纠缠性质。
The results show that quantum entanglement of all states from the coherent state to number state interacting with a cascade three level atom can be displayed by using the binomial field property.
对于脆弱纠缠态分析了它们在低温条件欧姆型耗散下的纠缠消相干演化动力学。
The dynamics of entanglement decoherence for fragile entangled states is discussed by taking into account the ohmic dissipation under the low temperature approximation.
同时发现当输入模的态为相干态和叠加数态的情况下，非线性克尔相互作用可产生纠缠。
The authors also find that the interaction of nonlinear Kerr media can generate entanglement when the states of input modes are prepared in coherent state and superposed Fock states.
研究了一对纠缠的二能级原子与单模相干态光场的相互作用，得出平均光子数随时间的演化规律。
The mean photon number evolution of entangled atoms interacting with coherent state light-filed is given.
在这个纠缠转移的方案里，通讯伙伴之间使用的量子信道是由两个振幅相同位相相反的相干态构成的纠缠态。
In this scheme, the entanglement between two coherent states, and , with the same amplitude but a phase difference is utilized as the quantum channel.
为此，我们研究了相位退相干和振幅退相干环境对纠缠、量子隐形传态和量子非局域性质的影响。
We investigate the entanglement, quantum teleportation, and quantum non-locality affected by the phase de-coherence and amplitude de-coherence of the environment.
结果表明：两粒子纠缠态可分为相干保持态和脆弱纠缠态。
It is found that the entangled states of two-particle system can be divided into two kinds, coherence-preserving states and fragile entangled states.
失谐量和退相干系数对输入态为任意纯态情况下的完全纠缠部分保真度具有一定的影响；
The result shows that:1. Detuning and phase decoherence have influence on maximal entangled fidelity for a arbitrary pure input state.
也就是说，消相干和解纠缠在量子信息处理过程中是不可避免的，这将使纯的量子通道退化为混态量子通道。
This will affect quantum information processing, and thus cause the loss of quantum information. Therefore, we need to investigate quantum communication via mixed states.
提出一种利用一个二能级原子与一两模腔场的非共振相互作用制备纠缠压缩相干态的方案。
It is based on the nonresonant interactions of an atom with two field modes located in two separated cavities.
提出一种利用一个二能级原子与一两模腔场的非共振相互作用制备纠缠压缩相干态的方案。
It is based on the nonresonant interactions of an atom with two field modes located in two separated cavities.
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