Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Physics and simulation of optoelectronic devices. Conference

Equivalent circuit modeling of traveling-wave superconducting-nanostripe single-photon detectors for silicon quantum photonic integrated circuits

Loïc H. Djamen Tchapda, Anindya Bal, Sami A. Nazib, Troy A. Hutchins-Delgado, Hosuk Lee, Mark V. Reymatias, Erika M. Sommer, I. Komissarov, John N. Nogan, Tzu‐Ming Lu, Roman Sobolewski, Marek Osiński

Published Mar 10, 2023• 0 citations
Publisher

Abstract

Superconducting nanostripe single-photon detectors (SNSPDs) represent key components in silicon quantum photonic integrated circuits (SiQuPICs). They provide good timing precision, low dark counts, and high efficiency. The design, fabrication, and characterization of SiQuPICs comprising SNSPDs coupled to dielectric optical waveguides are the core objectives of our work. The detectors are positioned directly on the dielectric waveguide core to increase photon absorption by the superconducting nanostripes. We also present results on the SPICE circuit modeling of traveling-wave SNSPDs integrated with Si3N4/SiO2 optical waveguides.

DOI
10.1117/12.2654772

Related papers

Silicon Quantum Photonic Integrated Circuits Comprising Superconducting Nanostripe Single-Photon Detectors

Sami A. Nazib, Troy A. Hutchins-Delgado, Hosuk Lee +14 more

We report on design, fabrication, and characterization of silicon quantum photonic integrated circuits comprising superconducting nanostripe single-photon detectors integrated with dielectric optical waveguides. In order to enhance absorption of photons by the superconducting nanostripes, the detectors are located directly on the dielectric waveguide core.

IEEE Research and Applications of Photonics in Defense Conference (RAPID)•Aug 1, 2021•1 citation

Integration of Superconducting Nanostripe Single-Photon Detectors with Dielectric Waveguides for Silicon Quantum Photonic Integrated Circuits

Troy A. Hutchins-Delgado, Sami A. Nazib, Hosuk Lee +8 more

We report on design, fabrication, and characterization of superconducting nanostripe single-photon detectors integrated with dielectric optical waveguides, whereby part of the upper cladding is removed to enhance absorption of photons by the superconducting nanostripes.

OSA Quantum 2.0 Conference•Jan 1, 2020•1 citation

Modeling of Traveling-Wave Superconducting-Nanowire Single-Photon Detectors

Loïc H. Djamen Tchapda, Troy A. Hutchins-Delgado, Sami A. Nazib +7 more

We report on SPICE circuit modeling of traveling-wave superconducting-nanowire single-photon detectors integrated with Si3N4/SiO2 optical waveguides.

Quantum 2.0 Conference and Exhibition•Jan 1, 2022•0 citations

Design of Superconducting-Nanostripe Single-Photon Detectors for Silicon Quantum Photonic Integrated Circuits

Loïc H. Djamen Tchapda, Sami A. Nazib, Troy A. Hutchins-Delgado +5 more

We report on design of traveling-wave supercon-ducting-nanostripe single-photon detectors for integration with silicon quantum photonic integrated circuits, with varying segment lengths and meander numbers.

IEEE/LEOS Summer Topical Meetings•Jul 1, 2022•0 citations

Ultrafast single photon detectors (Conference Presentation)

Wolfram H. P. Pernice, Simone Ferrari

Nanophotonic integrated circuits are emerging as a promising platform for quantum photonics. A key building block are waveguide integrated detectors with superior performance. Detectors based on superconductor nanowires (SNSPDs) attached to optical waveguides have been shown to provide high efficiency and good timing performance, as well as broad bandwidth. To move towards applications in high bandwidth quantum communication and processing, ultrafast single-photon detectors with high efficiency are needed. The speed of meander type SNSPDs is limited because the required high absorption efficiency necessitates long nanowires deposited on top of the waveguide. This enhances the kinetic inductance and makes the detectors slow. We overcome this problem by aligning the nanowire perpendicular to the waveguide to realize devices with a length below 1 µm. By integrating the nanowire into a photonic crystal cavity, we recover high absorption efficiency, thus enhancing the detection efficiency by more than an order of magnitude. Our cavity enhanced superconducting nanowire detectors are fully embedded in silicon nanophotonic circuits and efficiently detect single photons at telecom wavelengths. The detectors possess sub-nanosecond decay (~ 120 ps) and recovery times (~ 510 ps), and thus show potential for GHz count rates at low timing jitter (~ 32 ps).

Optical Sensing, Imaging, and Photon Counting: From X-Rays to THz•Oct 11, 2017•0 citations

Waveguide integrated superconducting single-photon detectors with high internal quantum efficiency at telecom wavelengths

Oliver Kahl, Simone Ferrari, Vadim V. Kovalyuk +3 more

Superconducting nanowire single-photon detectors (SNSPDs) provide high efficiency for detecting individual photons while keeping dark counts and timing jitter minimal. Besides superior detection performance over a broad optical bandwidth, compatibility with an integrated optical platform is a crucial requirement for applications in emerging quantum photonic technologies. Here we present SNSPDs embedded in nanophotonic integrated circuits which achieve internal quantum efficiencies close to unity at 1550 nm wavelength. This allows for the SNSPDs to be operated at bias currents far below the critical current where unwanted dark count events reach milli-Hz levels while on-chip detection efficiencies above 70% are maintained. The measured dark count rates correspond to noise-equivalent powers in the 10(-19) W/Hz(-1/2) range and the timing jitter is as low as 35 ps. Our detectors are fully scalable and interface directly with waveguide-based optical platforms.

Scientific Reports•Jun 10, 2015•111 citations
Superconducting nanostripe single-photon detectors (SNSPDs) represent key components in silicon quantum photonic integrated circuits (SiQuPICs). They provide good timing precision, low dark counts, and high efficiency. The design, fabrication, and characterization of SiQuPICs comprising SNSPDs coupled to dielectric optical waveguides are the core objectives of our work. The detectors are positioned directly on the dielectric waveguide core to increase photon absorption by the superconducting nanostripes. We also present results on the SPICE circuit modeling of traveling-wave SNSPDs integrated with Si3N4/SiO2 optical waveguides.
Nanophotonic integrated circuits are emerging as a promising platform for quantum photonics. A key building block are waveguide integrated detectors with superior performance. Detectors based on superconductor nanowires (SNSPDs) attached to optical waveguides have been shown to provide high efficiency and good timing performance, as well as broad bandwidth. To move towards applications in high bandwidth quantum communication and processing, ultrafast single-photon detectors with high efficiency are needed. The speed of meander type SNSPDs is limited because the required high absorption efficiency necessitates long nanowires deposited on top of the waveguide. This enhances the kinetic inductance and makes the detectors slow. We overcome this problem by aligning the nanowire perpendicular to the waveguide to realize devices with a length below 1 µm. By integrating the nanowire into a photonic crystal cavity, we recover high absorption efficiency, thus enhancing the detection efficiency by more than an order of magnitude. Our cavity enhanced superconducting nanowire detectors are fully embedded in silicon nanophotonic circuits and efficiently detect single photons at telecom wavelengths. The detectors possess sub-nanosecond decay (~ 120 ps) and recovery times (~ 510 ps), and thus show potential for GHz count rates at low timing jitter (~ 32 ps).
Superconducting nanowire single-photon detectors (SNSPDs) provide high efficiency for detecting individual photons while keeping dark counts and timing jitter minimal. Besides superior detection performance over a broad optical bandwidth, compatibility with an integrated optical platform is a crucial requirement for applications in emerging quantum photonic technologies. Here we present SNSPDs embedded in nanophotonic integrated circuits which achieve internal quantum efficiencies close to unity at 1550 nm wavelength. This allows for the SNSPDs to be operated at bias currents far below the critical current where unwanted dark count events reach milli-Hz levels while on-chip detection efficiencies above 70% are maintained. The measured dark count rates correspond to noise-equivalent powers in the 10(-19) W/Hz(-1/2) range and the timing jitter is as low as 35 ps. Our detectors are fully scalable and interface directly with waveguide-based optical platforms.