Experimental Teleportation of a Quantum Controlled-NOT Gate

Phys. Rev. Lett. 93, 240501 – Published 6 December 2004
Yun-Feng Huang, Xi-Feng Ren, Yong-Sheng Zhang, Lu-Ming Duan, and Guang-Can Guo


Teleportation of quantum gates is a critical step for the implementation of quantum networking and teleportation-based models of quantum computation. We report an experimental demonstration of teleportation of the prototypical quantum controlled-NOT (CNOT) gate. Assisted with linear optical manipulations, photon entanglement produced from parametric down-conversion, and postselection from the coincidence measurements, we teleport the quantum CNOT gate from acting on local qubits to acting on remote qubits. The quality of the quantum gate teleportation is characterized through the method of quantum process tomography, with an average fidelity of 0.84 demonstrated for the teleported gate.

DOI: http://dx.doi.org/10.1103/PhysRevLett.93.240501

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  • Received 2 August 2004
  • Published 6 December 2004

© 2004 The American Physical Society

Authors & Affiliations

Yun-Feng Huang1, Xi-Feng Ren1, Yong-Sheng Zhang1, Lu-Ming Duan1,2, and Guang-Can Guo1

  • 1Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026, Peoples Republic of China
  • 2Department of Physics and FOCUS Center, University of Michigan, Ann Arbor, Michigan 48109, USA

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