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Influence of back reflections on the detection efficiency of superconducting nanowire single-photon detectors on GaAs

Ekkehart Schmidt, K. Ilin, M. Siegel +4 more

Verhandlungen der Deutschen Physikalischen GesellschaftJan 1, 20160 citations

Cavity-Enhanced Nanowire Superconducting Single Photon Detectors on GaAs

Alessandro Gaggero, S. Jahanmiri Nejad, Francesco Marsili +8 more

We report on efficient nanowire NbN superconducting single photon detectors (SSPDs), integrated with an optical cavity based GaAs/AlAs distributed Bragg reflectors, showing a detection efficiency of 18.3% at 4.2K at 1.3 μm wavelength.

Jan 1, 20110 citations

Superconducting nanowire single-photon detectors

Berggren, Anant, Baek +11 more

Jan 1, 20110 citations

Nanowire superconducting single-photon detectors on GaAs for integrated quantum photonic applications

Alessandro Gaggero, S. Jahanmiri Nejad, Francesco Marsili +8 more

We demonstrate efficient nanowire superconducting single photon detectors (SSPDs) based on NbN thin films grown on GaAs. NbN films ranging from 3 to 5 nm in thickness have been deposited by dc magnetron sputtering on GaAs substrates at 350 °C. These films show superconducting properties comparable to similar films grown on sapphire and MgO. In order to demonstrate the potential for monolithic integration, SSPDs were fabricated and measured on GaAs/AlAs Bragg mirrors, showing a clear cavity enhancement, with a peak quantum efficiency of 18.3% at λ=1300 nm and T=4.2 K.We demonstrate efficient nanowire superconducting single photon detectors (SSPDs) based on NbN thin films grown on GaAs. NbN films ranging from 3 to 5 nm in thickness have been deposited by dc magnetron sputtering on GaAs substrates at 350 °C. These films show superconducting properties comparable to similar films grown on sapphire and MgO. In order to demonstrate the potential for monolithic integration, SSPDs were fabricated and measured on GaAs/AlAs Bragg mirrors, showing a clear cavity enhancement, with a peak quantum efficiency of 18.3% at λ=1300 nm and T=4.2 K.

Applied Physics LettersOct 11, 201075 citations

Superconducting nanowire single-photon detectors: recent progress

Xiaolong Hu, Yuhao Cheng, Chao Gu +2 more

中国科学通报：英文版Nov 30, 201519 citations

Cavity-enhanced superconducting single-photon detectors on GaAs substrate

S. Jahanmirinejad, Alessandro Gaggero, David Bitauld +8 more

Nanowire superconducting single photon detectors (SSPDs) are unique detectors for\nmany applications in quantum information and communications technology, owing to\ntheir ultrafast photoresponse, low dark count rate and low timing jitter. However, they\nhave limited detection efficiency due to small optical absorption in ultrathin wires. A\npromising approach to increase the photon absorption in SSPDs, is integrating them\nwith advanced optical structures. We demonstrate the successful integration of SSPDs\nwith optical microcavities based on GaAs/AlAs Bragg mirrors. Characterization of\nthese devices reveals clear cavity enhancement of the detection efficiency, resulting in a\npeak value of18% at 2=l300nm and T=4.2KNanowire superconducting single photon detectors (SSPDs) are unique detectors for\nmany applications in quantum information and communications technology, owing to\ntheir ultrafast photoresponse, low dark count rate and low timing jitter. However, they\nhave limited detection efficiency due to small optical absorption in ultrathin wires. A\npromising approach to increase the photon absorption in SSPDs, is integrating them\nwith advanced optical structures. We demonstrate the successful integration of SSPDs\nwith optical microcavities based on GaAs/AlAs Bragg mirrors. Characterization of\nthese devices reveals clear cavity enhancement of the detection efficiency, resulting in a\npeak value of18% at 2=l300nm and T=4.2K

Jan 1, 20101 citation

Cavity-enhanced nanowire superconducting single photon detectors on GaAs

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Cavity-enhanced nanowire superconducting single photon detectors on GaAs

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