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Testing multi-photon interference on a silicon chip
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DOI：10.1364/OE.27.035646.png)
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Abstract
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Multi-photon interference in large multi-port interferometers is key to linear optical quantum computing and in particular to boson sampling. Silicon photonics enables complex interferometric circuits with many components in a small footprint and has the potential to extend these experiments to larger numbers of interfering modes. However, loss has generally limited the implementation of multi-photon experiments in this platform. Here, we make use of high-efficiency grating couplers to combine bright and pure quantum light sources based on ppKTP waveguides with silicon circuits. We interfere up to 5 photons in up to 15 modes, verifying genuine multi-photon interference by comparing the results against various models including partial distinguishability between photons. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.
Keywords:
QUANTUM INTERFERENCE
GRATING COUPLER
COMPLEXITY
Journal
IF:
3.3
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6.1W
Citations:
14.3W