Photonics Research, Volume. 8, Issue 4, 601(2020)
Superconducting nanowire multi-photon detectors enabled by current reservoirs
Fig. 1. Comparison between commonly used technology for
Fig. 2. Schematic drawing of the device layout and the operating principle of the SNMPDs. (a) Device layout. The SNMPD is composed of
Fig. 3. Electrothermal dynamics of a superconducting nanowire two-photon detector. Panel (a) presents the electrothermal evolution after the first photon is absorbed by the first photosensitive nanowire at
Fig. 4. Bias conditions for the detector functioning as an
Fig. 5. Comparison within bias conditions for an
Fig. 6. Current dynamics of a superconducting nanowire eight-photon detector. (a) Current dynamics of the eight photosensitive nanowires, (b) current dynamics of the reservoir, (c) the output voltage pulse on the load impedance without external amplification. The dashed lines in (a) and (b) present the switching currents.
Fig. 7. Operation of a superconducting nanowire eight-photon detector in the six-photon regime. (a) Current dynamics of the eight photosensitive nanowires, (b) current dynamics of the reservoir, (c) the output voltage pulse on the load impedance without external amplification. The dashed lines in (a) and (b) present the switching currents.
Fig. 8.
Fig. 9. Comparison between bias conditions obtained analytically (solid symbols) and bias conditions obtained by SPICE simulation (open symbols).
Fig. 10. Waveguide-integrated superconducting nanowire multi-photon detector.
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Kai Zou, Yun Meng, Zhao Wang, Xiaolong Hu, "Superconducting nanowire multi-photon detectors enabled by current reservoirs," Photonics Res. 8, 601 (2020)
Category: Quantum Optics
Received: Oct. 16, 2019
Accepted: Feb. 15, 2020
Published Online: Mar. 31, 2020
The Author Email: Xiaolong Hu (xiaolonghu@tju.edu.cn)