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Construction of general quantum channel for quantum teleportation

Zhao-Hui Peng, Jian Zou, Xiaojuan Liu +1 more

Quantum Information ProcessingMar 16, 20136 citations

Entanglement identification of arbitrary two-qubit quantum channels and the capabilities to realise quantum teleportation

Lila Yuwana, Agus Purwanto, Endarko Endarko +1 more

Objectives: To identify the entanglements of arbitrary two-qubit quantum channels and the capabilities to realise quantum teleportation. Methods: The implementation of Schmidt de composition and measurements of quantum system state are equiped in this research. Findings: By constructing the general form of an arbitrary two qubit and measurement state, we able to determine an entanglement of an arbitrary two qubit by utilising Schmidt decomposition. Next, a capability of an arbitrary two qubit entangled state to realise teleportation can be identified by formulating measurement state and unitary operator. Improvement: The methods used in this paper have relatively simple calculations and very beneficial to be implement before developing quantum teleportation system experimentally. Keywords: Entangled States, Quantum Channels, Qubit (Quantum Bit), Quantum TeleportationObjectives: To identify the entanglements of arbitrary two-qubit quantum channels and the capabilities to realise quantum teleportation. Methods: The implementation of Schmidt de composition and measurements of quantum system state are equiped in this research. Findings: By constructing the general form of an arbitrary two qubit and measurement state, we able to determine an entanglement of an arbitrary two qubit by utilising Schmidt decomposition. Next, a capability of an arbitrary two qubit entangled state to realise teleportation can be identified by formulating measurement state and unitary operator. Improvement: The methods used in this paper have relatively simple calculations and very beneficial to be implement before developing quantum teleportation system experimentally. Keywords: Entangled States, Quantum Channels, Qubit (Quantum Bit), Quantum Teleportation

Indian Journal of Science and TechnologyNov 1, 20173 citations

Controlled Quantum Teleportation of a Two-Qubit Arbitrary State

Xiao‐Ming Xiu, Li Dong, Yajun Gao +1 more

Acta Physica Polonica BAug 1, 20081 citation

TRANSFORMATION MATRIX OF NETWORK-CONTROLLED TELEPORTATION

Xiu-Lao Tian

According to the collapse principle of quantum state when being measured, we present a method of directly writing out transformation matrix by looking at the figure of a network-controlled quantum channel. We find the rule of constructing transformation matrix in network-controlled teleportation. Based on this method, we gain transformation matrix of two-qubit state teleportation in which two GHZ state act as controlled quantum channels. We further proposed a scheme of one-qubit teleportation by a series-controlled quantum channel and teleportation of three-qubit via a typical network controlled quantum channel, in which two-qubit state instead of GHZ state act as quantum channel. So, Hadamard operation is not necessary in our scheme.According to the collapse principle of quantum state when being measured, we present a method of directly writing out transformation matrix by looking at the figure of a network-controlled quantum channel. We find the rule of constructing transformation matrix in network-controlled teleportation. Based on this method, we gain transformation matrix of two-qubit state teleportation in which two GHZ state act as controlled quantum channels. We further proposed a scheme of one-qubit teleportation by a series-controlled quantum channel and teleportation of three-qubit via a typical network controlled quantum channel, in which two-qubit state instead of GHZ state act as quantum channel. So, Hadamard operation is not necessary in our scheme.

Modern Physics Letters BDec 8, 20092 citations

Non-Bell-pair quantum channel for teleporting an arbitrary two-qubit state

Xin-Wei Zha, Haiyang Song

arXiv:quant-ph/0701146Physics Letters AMay 4, 200736 citations

Realization of two-destination teleportation by using two partially entangled states

Jin Rui-Bo

Teleportation of an arbitrary single-qubit state using two partially entangled states is considered.Firstly,we present a method for realizing probabilistically two-destination teleportation by using two partially entangled pairs as quantum channel.Then,we put forward a scheme for realizing deterministic and exact teleportation by using same quantum channel.In these schemes,the sender's local generalized measurement described by a positive operator valued measurement(POVM) lies at the heart.We construct the required POVM.The methods are applicable to any two partially entangled pairs satisfying the condition that their smaller Schmidt coefficients μ and v are 2μ+2μv-2v-1≥0.Teleportation of an arbitrary single-qubit state using two partially entangled states is considered.Firstly,we present a method for realizing probabilistically two-destination teleportation by using two partially entangled pairs as quantum channel.Then,we put forward a scheme for realizing deterministic and exact teleportation by using same quantum channel.In these schemes,the sender's local generalized measurement described by a positive operator valued measurement(POVM) lies at the heart.We construct the required POVM.The methods are applicable to any two partially entangled pairs satisfying the condition that their smaller Schmidt coefficients μ and v are 2μ+2μv-2v-1≥0.

Journal of Foshan UniversityJan 1, 20080 citations

Methods of Constructing Quantum Channels for Teleporting a General Two-qubit State

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