Previous proposals to produce tripartite $W$ -type entanglement are usually probabilistic and often based on physically unlikely events. We provide a deterministic procedure to remotely create $W$ states out of an EPR source, which is easier to produce. The proposal is made viable through measurements (which can be demolitive) in an appropriate three-qubit basis and turns out to be robust against imperfections in the bipartite source. It is possible, e. g., to create a pure ensemble of $W$ states out of an EPR source containing a systematic error. This simultaneously amounts to entanglement concentration and {\it lifting}.Previous proposals to produce tripartite $W$-type entanglement are usually probabilistic and often based on physically unlikely events. We provide a deterministic procedure to remotely create $W$ states out of an EPR source, which is easier to produce. The proposal is made viable through measurements (which can be demolitive) in an appropriate three-qubit basis and turns out to be robust against imperfections in the bipartite source. It is possible, e. g., to create a pure ensemble of $W$ states out of an EPR source containing a systematic error. This simultaneously amounts to entanglement concentration and {\it lifting}.

Sep 28, 20150 citations

Near Complete Remote Preparation of Bipartite Entangled State Using Lossy Beam Splitters

Xiaobo Wang, Yanliang Zhang, Hongzhi Xu +2 more

A linear optical scheme for probabilistic remotely preparing an arbitrary bipartite entangled state is proposed. The imperfect quantum entangled channel is considered in terms of the loss and absorption of the lossy beam splitters. We investigated the influence of the loss factor on the processing of the remote state preparation. The results of numerical calculations show that the loss of beam splitters not only cut down the fidelity of the result state and remote preparation success probabilities, but also leads to unequivalent impacts on both of them when the sender chooses different orthogonal measurement basis.A linear optical scheme for probabilistic remotely preparing an arbitrary bipartite entangled state is proposed. The imperfect quantum entangled channel is considered in terms of the loss and absorption of the lossy beam splitters. We investigated the influence of the loss factor on the processing of the remote state preparation. The results of numerical calculations show that the loss of beam splitters not only cut down the fidelity of the result state and remote preparation success probabilities, but also leads to unequivalent impacts on both of them when the sender chooses different orthogonal measurement basis.

Symposium on Photonics and OptoelectronicsMay 1, 20110 citations

Joint remote state preparation of a W-type state via W-type states

Qing-Qin Chen, Yan Xia, Jie Song +1 more

Physics Letters ASep 13, 201084 citations

Remote preparation of multipartite pure state [rapid communication]

Yi-Sheng Huang, Mingsheng Zhan

Physica A Statistical Mechanics and its ApplicationsJul 1, 20040 citations

Deterministic remote state preparation with weight graph states in quantum networks

Zongyi Li, Yuzhen Wei, Yongcheng Li +1 more

The weight graph states (WGS) usually serve as the imperfect generation of the graph states due to the limitation in experiments. In this paper, we study the deterministic remote state preparation (RSP) protocol by leveraging multiple WGS. First, we introduce the quantum circuit of the entanglement concentration based on the theory of majorization, calculating the entanglement coefficients by applying the Schmidt decomposition onto the bipartite WGS. Then, we establish the positive operator-valued measurement (POVM) that helps to extract available entanglement for the RSP protocol. In three-particle 1D WGS, we demonstrate that the bipartite entanglement between the sender and the receiver depends on the measurement basis selected by the repeater node. Here we find a set of orthogonal bases that retains the entanglement unchanged, which guarantees the robustness of the RSP scheme. In the end, we discuss the performance of our protocol and extend the channel to the multi-particle 1D WGS, illustrating the relationship between the entanglements and the different weights of edges. Our scheme provides a viable method to reuse the imperfect graph states, hoping to contribute to the future study of graph states in quantum networks.The weight graph states (WGS) usually serve as the imperfect generation of the graph states due to the limitation in experiments. In this paper, we study the deterministic remote state preparation (RSP) protocol by leveraging multiple WGS. First, we introduce the quantum circuit of the entanglement concentration based on the theory of majorization, calculating the entanglement coefficients by applying the Schmidt decomposition onto the bipartite WGS. Then, we establish the positive operator-valued measurement (POVM) that helps to extract available entanglement for the RSP protocol. In three-particle 1D WGS, we demonstrate that the bipartite entanglement between the sender and the receiver depends on the measurement basis selected by the repeater node. Here we find a set of orthogonal bases that retains the entanglement unchanged, which guarantees the robustness of the RSP scheme. In the end, we discuss the performance of our protocol and extend the channel to the multi-particle 1D WGS, illustrating the relationship between the entanglements and the different weights of edges. Our scheme provides a viable method to reuse the imperfect graph states, hoping to contribute to the future study of graph states in quantum networks.

Journal of the Optical Society of America BDec 19, 20230 citations

Efficient production of

W

states from imperfect bipartite sources

Previous proposals to produce tripartite

W

-type entanglement are usually probabilistic and often based on physically unlikely events. We provide a deterministic procedure to remotely create

W

states out of an EPR source, which is easier to produce. The proposal is made viable through measurements (which can be demolitive) in an appropriate three-qubit basis and turns out to be robust against imperfections in the bipartite source. It is possible, e. g., to create a pure ensemble of

W

states out of an EPR source containing a systematic error. This simultaneously amounts to entanglement concentration and {\it lifting}.