Quantum teleportation on a photonic chip

By B. Metcalf, J. Spring, Peter Conway Humphreys, N. Thomas-Peter, M. Barbieri, W. Kolthammer, Xian-Min Jin, N. Langford, D. Kundys, J. Gates and 3 more. Nature Photonics, 2014

189 citations recorded by the source corpus.

Teleportation of a photonic qubit is demonstrated on a reconfigurable photonic chip. All of the key elements of the teleportation protocol are performed. The average fidelity for the three linearly independent quantum states is higher than the classical limit, which certifies the capability of teleporting a general quantum state. Quantum teleportation is a fundamental concept in quantum physics1 that now finds important applications at the heart of quantum technology, including quantum relays2, quantum repeaters3 and linear optics quantum computing4,5. Photonic implementations have largely focused on achieving long-distance teleportation for decoherence-free quantum communication6,7,8. Teleportation also plays a vital role in photonic quantum computing4,5, for which large linear optical networks will probably require an integrated architecture. Here, we report a fully integrated implementation of quantum teleportation in which all key parts of the circuit—entangled state preparation, Bell-state analysis and tomographic state measurement—are performed on a reconfigurable photonic chip. We also show that a novel element-wise characterization method is critical to the mitigation of component errors, a key technique that will become increasingly important as integrated circuits reach the higher complexities necessary for quantum enhanced operation.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/ec2f3d9695274fe5f8315ad30bae601422c7a39d

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Integrated photonic quantum technologies (2019, methodology): “e generated in 4 waveguide SFWMSPSs. Qubits are operated on a reconfigurable entangling gate, performing either a fusion operation or CZ operation. Figure reproduced from: a, ref. [76], AAAS; b, ref. [78], Macmillan Publishers Ltd; c, ref. [81], Macmillan Publishers Ltd; d, ref. [77], AAAS; e, ref. ”
Large-scale quantum photonic circuits in silicon (2016, methodology): “Demonstrations include two-photon quantum simulations [31], boson sampling [25, 26, 32–34] in circuits with between 5 and 13 waveguide modes, and up to four photons in each separate mode post-selected controlled-NOT (CNOT) gates [16, 33], quantum teleportation [35] with probabilistic Bell state meas”
Chip-to-chip quantum teleportation and multi-photon entanglement in silicon (2019, background): “017 EW [4]”