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Single-photon detection in the mid-infrared up to 10 micron wavelength using tungsten silicide superconducting nanowire detectors
V. B. Verma, B. Korzh, A. B. Walter +15
We developed superconducting nanowire single-photon detectors (SNSPDs) based on tungsten silicide (WSi) that show saturated internal detection efficiency up to a wavelength of 10 u…
Scalable multiphoton quantum metrology with neither pre- nor post-selected measurements
Chenglong You, Mingyuan Hong, Peter Bierhorst +8
The quantum statistical fluctuations of the electromagnetic field establish a limit, known as the shot-noise limit, on the sensitivity of optical measurements performed with classi…
Integrated-photonic characterization of single-photon detectors for use in neuromorphic synapses
Sonia M. Buckley, Alexander N. Tait, Jeffrey Chiles +5
We show several techniques for using integrated-photonic waveguide structures to simultaneously characterize multiple waveguide-integrated superconducting-nanowire detectors with a…
Superconducting microwire detectors with single-photon sensitivity in the near-infrared
Jeff Chiles, Sonia M. Buckley, Adriana Lita +7
We report on the fabrication and characterization of single-photon-sensitive WSi superconducting detectors with wire widths from 1 μm to 3 μm. The devices achieve saturated interna…
Low-loss, high-bandwidth fiber-to-chip coupling using capped adiabatic tapered fibers
Saeed Khan, Sonia M. Buckley, Jeff Chiles +3
We demonstrate adiabatically tapered fibers terminating in sub-micron tips that are clad with a higher-index material for coupling to an on-chip waveguide. This cladding enables co…
Microring resonator-coupled photoluminescence from silicon W~centers
A. N. Tait, S. M. Buckley, J. Chiles +6
Defect centers are promising candidates for waveguide-integrated silicon light sources. We demonstrate microresonator- and waveguide-coupled photoluminescence from silicon W~center…