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1.
压缩真空态下介观RLC电路中电荷和电流的量子涨落   总被引:26,自引:1,他引:25       下载免费PDF全文
顾永建 《物理学报》2000,49(5):965-968
发展了一种有源RLC电路的量子力学处理方案,在此基础上研究了压缩真空态下介观RLC电路中电荷和电流的量子涨落,着重研究了电阻和压缩参数对量子涨落的影响.  相似文献
2.
高斯光束照射下的夫琅禾费圆孔衍射   总被引:11,自引:1,他引:10  
推导了高斯光束照射下夫琅禾费圆孔衍射场的级数角,进而讨论了衍射场的一些基本特征。  相似文献
3.
Teleportation of a three—particle entangled W state   总被引:7,自引:0,他引:7  
We have investigated the problem of teleporting a three-particle entangled W state and we propose a scheme based on entanglement spapping to complete the teleportation.We also put forward a scheme for the teleportation of a general W state by using nonmaximally entangled quantum channels.The probability of success of the latter scheme is obtained.  相似文献
4.
关于有源RLC电路的量子化   总被引:6,自引:1,他引:5  
顾永建 《大学物理》2000,19(6):12-13,48
提出一种将有源RLC电路量子化的方法,修正了有关文献中的错误。  相似文献
5.
介观RLC电路中电荷和电流的量子涨落   总被引:6,自引:0,他引:6       下载免费PDF全文
顾永建 《光子学报》1999,28(12):1138-1140
发展了一种将有源RLC电路量子化的方法,在此基础上,研究了真空态下介观RLC电路中电荷、电流的量子涨落,特别是研究了电阻对量子涨落的影响.  相似文献
6.
Remote State Preparation via a Non—Maximally Entangled Channel   总被引:3,自引:0,他引:3       下载免费PDF全文
We investigate remote state preparation (RSP) via a non-maximally entangled channel for three cases:a general qubit;a special ensemble of qubits (qubit states on the equator of the Bloch sphere);and an asymptotic limit of N copies of a general state.The results show that the classical communication cost of RSP for the two latter cases can be less than that of teleportation,but for the first case,in a restricted setting,the classical communication cost is equal to that of teleportation.Whether or not this is the case for a more general setting is still an open question.  相似文献
7.
研究经典外部驱动场对双原子Tavis-Cummings(T-C)模型中原子的作用.求出了相互作用绘景中驱动T-C系统能量——准能的本征值和相应的本征态,给出了Schrdinger绘景中该系统波函数的一般解.结果表明,外场驱动没有改变T-C模型的能级,但使该模型中的Fock态产生平移,从而使一般T-C模型中具有一定频率的定态被拓展到具有无限多个频率的Fock空间.  相似文献
8.
顾永建 《中国物理》2001,10(6):490-493
We study the quantum effects of a damped LC parallel circuit considering its different performance from an RLC series circuit in classical physics. The damped LC parallel circuit with a source is quantized and the quantum fluctuations of magnetic flux and electric charge in the circuit in displaced squeezed Fock state are investigated. It is shown that, as in the RLC series circuit, the fluctuations only depend on the squeezing parameter and the parameters of the circuit components in the damped LC parallel circuit, but the effects of the circuit components on the fluctuations are different in the two circuits.  相似文献
9.
Implementation of nonlocal quantum swap operation on two entangled pairs   总被引:2,自引:0,他引:2  
We propose a scheme for the implementation of nonlocal quantum swap operation on two spatially separated entangled pairs and we show that the operation can swap two qubits of these entangled pairs.We discuss the resources of the entangled qubits and classical communication bits required for the optimal implementation of the nonlocal quantum swap operation.We also put forward a scheme for probabilistic implementation of nonlocal swap operation via a nonmaximally entangled quantum channel.The probability of a successful nonlocal swap operation is obtained by introducing a collective unitary transformation.  相似文献
10.
Teleportation of M—Qubit Unitary Operations   总被引:1,自引:0,他引:1       下载免费PDF全文
We discuss teleportation of unitary operations on a two-qubit in detail,then generalize the bidirectional state teleportation scheme from one-qubit to M-qubit unitary operations.The resources required for the optimal implementation of teleportation of an M-qubit unitary operation using a bidirectional state teleportation scheme are given.  相似文献
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