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31.
It has recently been realized that quantum strategies have a great
advantage over classical ones in quantum games. However, quantum states
are easily affected by the quantum noise, resulting in decoherence. In this
paper, we investigate the effect of quantum noise on a multiplayer
quantum game with a certain strategic space,
with all players affected by the same quantum noise at the
same time. Our results show
that in a maximally entangled state, a special Nash equilibrium
appears in the range of It has recently been realized that quantum strategies have a great advantage over classical ones in quantum games. However, quantum states are easily affected by the quantum noise, resulting in decoherence. In this paper, we investigate the effect of quantum noise on a multiplayer quantum game with a certain strategic space, with all players affected by the same quantum noise at the same time. Our results show that in a maximally entangled state, a special Nash equilibrium appears in the range of 0≤p≤0.622 (p is the quantum noise parameter), and then disappears in the range of 0.622 〈 p≤ 1. Increasing the amount of quantum noise leads to the reduction of the quantum player's payoff. 相似文献
32.
Stationary entanglement between two spatially separated atoms driven by a coherent laser field 下载免费PDF全文
This paper studies quantum entanglement between two spatially
separated atoms driven by a coherent laser field in the dissipative
process of spontaneous emission. It is shown that the entanglement
strongly depends on the detuning of the laser frequency from atomic
transition frequency, the interatomic separation and the Rabi
frequency of the coherent laser field. A considerable amount of
steady state entanglement can be obtained near Δ=-α
(i.e., the dipole--dipole interaction and the detuning cancel out
mutually) for small atomic separation and large Rabi frequency of
the coherent laser field. 相似文献
33.
In this paper, we propose a physical scheme to concentrate non-maximally entangled
atomic pure states by using atomic collision in a far-off-resonant cavity. The most
distinctive advantage of our scheme is that the non-maximally entangled atoms may be
far from or near each other and their degree of entanglement can be maximally
amplified. The photon-number-dependent parts in the effective Hamiltonian are
cancelled with the assistance of a strong classical field, thus the scheme is
insensitive to both the cavity decay and the thermal field. 相似文献
34.
基于Gyrator变换,推导了广义双曲正弦-高斯光束场分布的解析表达式,研究了广义双曲正弦-高斯光束在Gyrator变换平面上的光强分布和相位特性.结果表明,在Gyrator变换过程中,具有边缘位错相位特性的双曲正弦-高斯光束能转换为具有涡旋的暗空心光束,并确定产生的暗空心光束的拓扑荷指数为一,而不具有边缘位错相位特性的双曲余弦-高斯光束则不可能出现空心结构.对影响变换场强度和相位分布的束结构参数及系统参数进行了分析讨论. 相似文献