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Published on: June 8, 2018
Teleportation-based realization of an optical quantum two-qubit entangling gate
Wei-Bo Gao1, Alexander M Goebel, Chao-Yang Lu
1Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
Summary
Researchers demonstrate a quantum entangling gate using teleportation for photonic qubits. This breakthrough advances quantum computation and communication by simplifying gate implementation with entangled states.
Area of Science:
- Quantum Information Science
- Quantum Optics
- Quantum Computation
Background:
- Quantum teleportation enables secure long-distance quantum communication and quantum computation.
- The Gottesman-Chuang scheme offers a feasible route to quantum computation using teleportation and entangled states.
Purpose of the Study:
- To demonstrate the smallest module of the Gottesman-Chuang scheme: a teleportation-based quantum entangling gate.
- To implement controlled-NOT and controlled-Phase gates for photonic qubits using quantum teleportation.
Main Methods:
- Utilized a high-fidelity six-photon interferometer to realize controlled-NOT gates via teleportation.
- Employed four-photon hyperentanglement to implement controlled-Phase gates.
Main Results:
- Successfully demonstrated teleportation-based quantum entangling gates for photonic qubits.
- Verified the working principles and entangling capabilities of the implemented gates.
Conclusions:
- The experimental demonstration is a significant step towards building practical quantum computers.
- This work opens avenues for further applications in linear optics quantum information processing.
