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Faithful Multihop Two-Qubit Transmission Through GHZ-GHZ Channel

Shuangshuang Shuai, Na Chen, Bin Yan +1 more

International Journal of Theoretical PhysicsOct 17, 20203 citations

Faithful qubit transmission in a quantum communication network with heterogeneous channels

Na Chen, Lin Xi Zhang, Chang Xing Pei

Quantum Information ProcessingFeb 21, 20183 citations

Efficient Polarization Entanglement Distribution for W State Assisted by Frequency Degree of Freedom

Yan Li, Xiao Chen, Zhi Zeng +1 more

We present an efficient faithful polarization entanglement distribution protocol for W state over an arbitrary noise channel, which use the frequency degree of freedom to carry the entanglement during the transmission. We describe the transmission of three-photon W state as an example, and then generalize this scheme to n-qubit W state situation. The remote parties can obtain maximally entangled W states on the polarization of photons, and the success probability is 100% in principle. As there was few entanglement purification for W state, our scheme is an efficient and practical method to share W state entanglement between distant parties, which will be useful in quantum communication. We also show that our scheme can be used to distribute arbitrary multi-particle entangled state.We present an efficient faithful polarization entanglement distribution protocol for W state over an arbitrary noise channel, which use the frequency degree of freedom to carry the entanglement during the transmission. We describe the transmission of three-photon W state as an example, and then generalize this scheme to n-qubit W state situation. The remote parties can obtain maximally entangled W states on the polarization of photons, and the success probability is 100% in principle. As there was few entanglement purification for W state, our scheme is an efficient and practical method to share W state entanglement between distant parties, which will be useful in quantum communication. We also show that our scheme can be used to distribute arbitrary multi-particle entangled state.

Communications in Theoretical PhysicsJan 1, 20135 citations

Efficient polarization qubit transmission assisted by frequency degree of freedom

Xihan Li, Xiao-jiao Duan

We present an efficient arbitrary polarization qubit transmission scheme against channel noise by utilizing frequency degree of freedom, which is more stable in transmission surroundings. The information of a quantum state is encoded in a frequency state during the transmission and transferred to a polarization state later. Both the fidelity of the quantum state transmitted and the success probability of this scheme are 100% in principle.

arXiv:1009.0841Journal of Physics B Atomic Molecular and Optical PhysicsMar 4, 20118 citations

Efficient Multipartite Polarization Entanglement Distribution Over Arbitrary Noise Channel

Xiao Chen, Yan Li, Zhi Zeng +1 more

We present an efficient faithful multipartite polarization entanglement distribution protocol over an arbitrary noisy channel. The spatial degree of freedom is used to carry the entanglement during the transmission. We describe the principle by distributing n-qubit Greenberge—Horne—Zeilinger state and n-qubit W state. Our scheme can be used to distribute arbitrary n-qubit entangled states to n distant locations. The remote parties can obtain maximally entangled states deterministically on the polarization of photons. Only passive linear optics are employed in our setup, which makes our scheme more feasible and efficient for practical application in long distance quantum communication.We present an efficient faithful multipartite polarization entanglement distribution protocol over an arbitrary noisy channel. The spatial degree of freedom is used to carry the entanglement during the transmission. We describe the principle by distributing n-qubit Greenberge—Horne—Zeilinger state and n-qubit W state. Our scheme can be used to distribute arbitrary n-qubit entangled states to n distant locations. The remote parties can obtain maximally entangled states deterministically on the polarization of photons. Only passive linear optics are employed in our setup, which makes our scheme more feasible and efficient for practical application in long distance quantum communication.

Communications in Theoretical PhysicsOct 1, 20133 citations

Fixed-Frequency Qubits Coupled via a Tunable Bus

David C. McKay

Bulletin of the American Physical SocietyMar 15, 20170 citations

Efficient faithful qubit transmission with frequency degree of freedom

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