title: Teleportation of a Toffoli gate among distant solid-state qubits with quantum dots embedded in optical microcavities.
abstract: Teleportation of unitary operations can be viewed as a quantum remote control. The remote realization of robust multiqubit logic gates among distant long-lived qubit registers is a key challenge for quantum computation and quantum information processing. Here we propose a simple and deterministic scheme for teleportation of a Toffoli gate among three spatially separated electron spin qubits in optical microcavities by using local linear optical operations, an auxiliary electron spin, two circularly-polarized entangled photon pairs, photon measurements, and classical communication. We assess the feasibility of the scheme and show that the scheme can be achieved with high average fidelity under the current technology. The scheme opens promising perspectives for constructing long-distance quantum communication and quantum computation networks with solid-state qubits.
authors.affiliation: Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
authors.forename: Shi
authors.initials: S
authors.lastname: Hu
authors.affiliation: Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
authors.forename: Wen-Xue
authors.initials: WX
authors.lastname: Cui
authors.affiliation: Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
authors.forename: Dong-Yang
authors.initials: DY
authors.lastname: Wang
authors.affiliation: Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
authors.forename: Cheng-Hua
authors.initials: CH
authors.lastname: Bai
authors.affiliation: Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Guo
authors.affiliation: Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
authors.forename: Hong-Fu
authors.initials: HF
authors.lastname: Wang
authors.affiliation: Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
authors.forename: Ai-Dong
authors.initials: AD
authors.lastname: Zhu
authors.affiliation: 1] Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China [2] Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
authors.forename: Shou
authors.initials: S
authors.lastname: Zhang