Monolithic Si3N4 platform achieves EPR fidelity 0.9875(3), HOM visibility 0.990(6), and four-photon GHZ fidelity 0.943(8) at 27 Hz—more than 100x prior silicon-photonic rates—using CMOS-compatible 150 mm wafer fabrication.
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Adversarially encoded measurement deviations as small as 0.23% can produce false certification of high-dimensional entanglement in provably separable systems, demonstrated experimentally with classical photonic states up to 61 dimensions.
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An ultralow-loss integrated photonic platform for discrete-variable quantum information processing
Monolithic Si3N4 platform achieves EPR fidelity 0.9875(3), HOM visibility 0.990(6), and four-photon GHZ fidelity 0.943(8) at 27 Hz—more than 100x prior silicon-photonic rates—using CMOS-compatible 150 mm wafer fabrication.
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Faking entanglement with imperceptible measurement deviations
Adversarially encoded measurement deviations as small as 0.23% can produce false certification of high-dimensional entanglement in provably separable systems, demonstrated experimentally with classical photonic states up to 61 dimensions.