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Repeat-Until-Success Quantum Computing

Yuan Liang Lim·Almut Beige·Leong Chuan Kwek
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Abstract

We demonstrate the possibility to perform distributed quantum computing using only single photon sources (atom-cavity-like systems), linear optics and photon detectors. The qubits are encoded in stable ground states of the sources. To implement a universal two-qubit gate, two photons should be generated simultaneously and pass through a linear optics network, where a measurement is performed on them. Gate operations can be repeated until a success is heralded without destroying the qubits at any stage of the operation. In contrast to other schemes, this does not require explicit qubit-qubit interactions, a priori entangled ancillas nor the feeding of photons into photon sources.

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Yuan Liang Lim, Almut Beige, Leong Chuan Kwek. 2005-04-20. Repeat-Until-Success Quantum Computing. https://doi.org/10.1103/physrevlett.95.030505

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