# Understanding photonic quantum-logic gates: The road to fault tolerance

@article{Weinhold2008UnderstandingPQ, title={Understanding photonic quantum-logic gates: The road to fault tolerance}, author={Till Weinhold and Alexei Gilchrist and Kevin J. Resch and Andrew C. Doherty and Jeremy Lloyd O'Brien and Geoff J. Pryde and Andrew G. White}, journal={arXiv: Quantum Physics}, year={2008} }

Fault-tolerant quantum computing requires gates which function correctly despite the presence of errors, and are scalable if the error probability-per-gate is below a threshold value. To date, no method has been described for calculating this probability from measurements on a gate. Here we introduce a technique enabling quantitative benchmarking of quantum-logic gates against fault-tolerance thresholds for any architecture. We demonstrate our technique experimentally using a photonic…

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