Ultrafast NbN superconducting single-photon detector integrated in a parabolic mirror
Abstract This work describes research and development of a superconducting nanowire single-photon detector (SNSPD) integrated with a parabolic mirror fabricated in a silicon wafer by focused ion beam etching. Using finite-difference time-domain simulations of the electromagnetic field distribution within the mirror and on its surface, the geometry of the molybdenum mirror was designed for efficient collection of light into a 1.5 µ m spot. Reduction of the area of the SNSPD to 1.5 µ m × 1.5 µ m resulted in low kinetic inductance and faster operation. Although the detector response is currently limited by the 1 GHz band of the read-out electronics, the simulation suggests reduction of the detector dead time to 348 ps.
Authors
- Alexander P. Shevchenko (ORCID: https://orcid.org/0000-0002-2298-6507)
- M. A. Dryazgov
- A. Korneev (ORCID: https://orcid.org/0000-0002-0116-9591)
- Nikita Osipov (ORCID: https://orcid.org/0009-0008-8616-9128)
- I. M. Asharchuk (ORCID: https://orcid.org/0000-0001-6445-0009)
- Dmitry V. Obydennov (ORCID: https://orcid.org/0000-0002-9611-201X)
- Nikolay Vovk
- М.В. Шибалов (ORCID: https://orcid.org/0000-0002-5818-4776)
- K. Smirnov (ORCID: https://orcid.org/0000-0003-2588-1046)
- M. A. Tarkhov (ORCID: https://orcid.org/0000-0001-8168-1917)
- Yuliya Korneeva (ORCID: https://orcid.org/0000-0003-1576-265X)
Institutions
- National Research University Higher School of Economics (RU)
- Institute of Microelectronics (CN)
Publication Details
- Journal
- Superconductor Science and Technology
- Published
- 2025-09-23
- DOI
- https://doi.org/10.1088/1361-6668/ae0a8b
- Primary Topic
- Advanced Optical Sensing Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00