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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…
Precisely determining photon-number in real-time
Leonardo Assis Morais, Till Weinhold, Marcelo Pereira de Almeida +7
Superconducting transition-edge sensors (TES) are extremely sensitive microcalorimeters used as photon detectors with unparalleled energy resolution. They have found application fr…
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…
Quantum-enhanced interferometry with large heralded photon-number states
G. S. Thekkadath, M. E. Mycroft, B. A. Bell +11
Quantum phenomena such as entanglement can improve fundamental limits on the sensitivity of a measurement probe. In optical interferometry, a probe consisting of entangled phot…
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…