Experimental Teleportation of a Quantum Controlled-NOT Gate
Yun‐Feng Huanga, Xi‐Feng Rena, Yong-Sheng Zhanga, Luming Duana b, Guang‐Can Guoa
- aLaboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026, Peoples Republic of China
- bDepartment of Physics and FOCUS Center, University of Michigan, Ann Arbor, Michigan 48109, USA
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Abstract
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.