共查询到20条相似文献,搜索用时 156 毫秒
1.
DAI Hong-Yi KUANG Le-Man LI Cheng-Zu 《理论物理通讯》2005,44(7)
We propose a scheme to probabilistically teleport an unknown arbitrary three-level two-particle state by using two partial entangled two-particle states of three-level as the quantum channel. The classical communication cost required in the ideal probabilistic teleportation process is also calculated. This scheme can be directly generalized to teleport an unknown and arbitrary three-level K-particle state by using K partial entangled two-particle states of three-level as the quantum channel. 相似文献
2.
DAIHong-Yi KUANGLe-Man LICheng-Zu 《理论物理通讯》2005,44(1):40-44
We propose a scheme to probabilistically teleport an unknown arbitrary three-level two-particle state by using two partial entangled two-particle states of three-level as the quantum channel. The classical communication cost required in the ideal probabilistic teleportation process is also calculated. This scheme can be directly generalized to teleport an unknown and arbitrary three-level K-particle state by using K partial entangled two-particle states of three-level as the quantum channel. 相似文献
3.
通过四个纠缠态粒子来实现未知的三个纠缠态粒子的量子几率隐形传输 总被引:8,自引:2,他引:6
提出一种分别利用四个三态粒子的最大纠缠态和非最大纠缠态作为量子通道来传输一未知的三个三态粒子纠缠态的方案.首先考察量子通道是最大纠缠态的情况,然后进一步考察量子通道是非最大纠缠态的情况,同时发现在后者情况时,通过引进一个辅助粒子,并构造一幺正变换矩阵,即可以一定的几率完成该三态粒子纠缠态的隐形传输. 相似文献
4.
ZHAN You-Bang 《理论物理通讯》2006,45(2):275-278
In this paper, two schemes for teleporting an unknown three-particle
three-level entangled state are proposed. In the first scheme, two partial three-particle three-level entangled states are used as the quantum
channels, while in the second scheme, three two-particle three-level
non-maximally entangled states are employed as quantum channels. It is shown that the teleportation can be successfully realized with certain
probability, for both two schemes, if a receiver adopts some appropriate
unitary transformations. It is shown also that the successful probabilities
of these two schemes are different. 相似文献
5.
We propose a scheme to probabilistically teleport an unknown three-level three-particle entangled state. The quantum channel is composed of a partial entangled three-level two-particle state and a partial entangled three-level three-particle state. We calculate the successful total probability and the classical communication cost required in the ideal probabilistic teleportation process, respectively. It is shown that an unknown three-level three-particle entangled state can be teleported using fewer entangled particles and lesser classical communication cost than Bennett et al.’s original protocol. 相似文献
6.
Teleportation of an Arbitrary Two-Particle State by Two Partial Entangled Three-Particle GHZ States 总被引:2,自引:0,他引:2
We present a scheme for teleporting an unknown arbitrary
two-particle state from a sender to either one of two receivers. The quantum
channel is composed of two partial entangled three-particle GHZ states. An
unknown arbitrary two-particle state can be perfectly teleported
probabilistically if the sender performs two generalized Bell-state
measurements and each receiver introduces an appropriate unitary
transformation with the help of the other receiver's Hadamard operations and
simple measurements. 相似文献
7.
We propose a scheme to remotely prepare a general two-particle entangled state by using a bipartite entangled state and a tripartite entangled W state as the quantum channel.Our scheme consists of one sender and two remote receivers.The sender can help either one of the receivers to remotely reconstruct the original state with the assistance of the other receiver's single-particle orthogonal measurement.We obtain the total success probability and discuss the classical communication cost in our remote state preparation scheme. 相似文献
8.
WANG Zhang-Yin WANG Dong LIU Jun SHI Shou-Hua 《理论物理通讯》2006,46(5):859-862
We present a scheme for probabilistically teleporting an arbitrary unknown two-qubit state through a quantum channel made up of two nonidentical non-maximally entangled states. In this scheme, the probabilistic teleportation is realized by using a proper positive operator-valued measure instead of usual projective measurement. 相似文献
9.
We present a scheme for probabilistically teleporting an arbitrary unknown two-qubit state through a quantum channel made up of two nonidentical non-maximally entangled states. In this scheme, the probabilistic teleportation is realized by using a proper positive operator-valued measure instead of usual projective measurement. 相似文献
10.
We propose a scheme for generating a maximally entangled state of two three-level superconducting quantum interference devices (SQUIDs) by using a quantized cavity field and classical microwave pluses in cavity. In this scheme, no quantum information will be transferred from the SQUIDs to the cavity since the cavity field is only virtually excited. Thus, the cavity decay is suppressed during the entanglement generation. 相似文献
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12.
We present an optical scheme to almost completely teleport a bipartite entangled coherent state using a four-partite cluster-type entangled coherent state as quantum channel. The scheme is based on optical elements such as beam splitters, phase shifters, and photon detectors. We also obtain the average fidelity of the teleportation process. It is shown that the average fidelity is quite close to unity if the mean photon number of the coherent stateis not too small. 相似文献
13.
ZHOU Jian YANG Ming CAO Zhuo-Liang 《理论物理通讯》2007,47(4):633-635
In this paper, we present a probabilistic teleportation scheme for unknown bipartite entangled state. By using linear optical elements, we convert the Bell-state measurement into separated single-qubit measurements. 相似文献
14.
利用原子-腔场喇曼相互作用制备纠缠压缩真空态 总被引:2,自引:2,他引:0
提出了利用量子态腔场与原子的喇曼相互作用制备纠缠压缩真空态的方案.在该方案中,一个初始制备在基态的原子被依次送入几个初始制备在压缩真空态的微腔中.通过控制原子的运行速度,使原子与每一个腔具有相同的相互作用时间.当原子与腔场发生相互作用,原子与腔场产生纠缠之后,进行原子的测量.当原子被测量处于基态或激发态时,按照量子力学波包塌缩原理,腔场态将塌缩到相应的纠缠压缩真空态.对纠缠压缩真空态的纠缠性质也进行了简略的讨论. 相似文献
15.
A scheme for teleporting an unknown three-particle GHZ state from a sender
to either one of two receivers is proposed. In this scheme, the quantum
channel is composed of two non-maximally three-particle entangled W states. An unknown three-particle GHZ state can be perfectly teleported
probabilistically if the sender performs two generalized Bell-state
measurements and the Hadamard operation while either one of two receivers
introduces an ancillary particle which is one of the final three particle
constituting the teleported state, then performs the controlled-not
operation with the ancillary particle as the target bit and introduces an
appropriate unitary transformation with the help of the other receiver's
simple measurements. All kinds of unitary transformations are given in
detail. The present scheme may be directly generalized to teleport an
unknown multiparticle GHZ state via two three-particle entangled W states
used as the quantum channel. 相似文献
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提出了一个基于高维2m+1粒子纠缠态的任意m粒子态量子可控离物传态方案,发送方Alice对需传送的未知态量子系统和手中的纠缠粒子执行m个广义Bell基测量,控制方执行广义X基测量,依据预先共享量子纠缠态非定域相关性,接收方对手中的粒子执行相应的幺正操作就可以重建原来未知量子态.与其他方案相比,方案减少了任意高维多粒子态可控离物传送所需传送粒子数.我们进一步讨论了基于纯纠缠信道的概率量子可控离物传态方案,通过与发送方和控制方合作,接收方只需对手中的纠缠粒子和引入的附加粒子执行联合幺正演化和投影测量,就可以在他的粒子上概率的重建原来的未知量子态,最后,方案计算讨论了基于纯纠缠态量子可控离物传态成功概率与信道纠缠度之间的关系. 相似文献
19.
We present a scheme to entangle fields in multiple cavities. Our scheme is based on the resonant interaction of a Ξ-type three-level atom with the cavity fields for precalculated interaction time, which enables us to generate a quantum entangled
Greenberger-Horn-Zeilinger (GHZ) state of fields in multiple cavities. In
principle, the scheme can be also generalized to generate N-party GHZ state. The required experimental techniques are within the scope of what can be obtained in the microwave cavity QED set up. 相似文献
20.
通过Raman相互作用隐形传送未知多原子纠缠态 总被引:8,自引:8,他引:0
基于多粒子纠缠态在证明量子非定域性和量子信息处理方面的重要应用,提出一种方案隐形传送未知原子纠缠态.方案基于Λ型三能级原子与单模腔场的简并Raman相互作用.首先让n个原子相继通过一个相干腔场来制备量子通道.然后发送者让携带未知纠缠态的另n个原子相继通过相干腔场并通过对原子与腔场的探测作联合测量.当|α|1时,可以用探测正交态的方法探测腔场.最后接收者根据由经典通道得到的联合测量结果重构初始态.方案的特点是用一个相干态与多个原子的纠缠态作为量子通道,简单易行.该方案有望在证明量子非定域性和量子信息过程中有重要的应用价值. 相似文献