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Regular version of the site

Article

Superconducting detector for visible and near-infrared quantum emitters [Invited]

Optical Materials Express. 2017. Vol. 7. No. 2. P. 513-526.
Vorobyov V., Kazakov A., Soshenko V., Korneev A., Shalaginov M., Bolshedvorskii S., Sorokin V., Divochiy A., Vakhtomin Y., Smirnov K., Voronov B., Shalaev V., Akimov A., Goltsman G.

Further development of quantum emitter based communication and sensing applications intrinsically depends on the availability of robust single-photon detectors. Here, we demonstrate a new generation of superconducting single-photon detectors specifically optimized for the 500-1100 nm wavelength range, which overlaps with the emission spectrum of many interesting solid-state atom-like systems, such as nitrogen-vacancy and silicon-vacancy centers in diamond. The fabricated detectors have a wide dynamic range (up to 350 million counts per second), low dark count rate (down to 0.1 counts per second), excellent jitter (62 ps), and the possibility of on-chip integration with a quantum emitter. In addition to performance characterization, we tested the detectors in real experimental conditions involving nanodiamond nitrogen-vacancy emitters enhanced by a hyperbolic metamaterial.