GHz detection rates and dynamic photon-number resolution with superconducting nanowire arrays
arXiv:2303.17401 · doi:10.1021/acs.nanolett.3c01228
Abstract
Superconducting-nanowire single-photon detectors (SNSPDs) have enabled the realization of several quantum optics technologies thanks to their high detection efficiency, low dark-counts, and fast recovery time. However, the widespread use of technologies such as linear optical quantum computing (LOQC), quasi-deterministic single photon sources and quantum repeaters requires faster detectors that can distinguish between different photon number states. Here, we report the fabrication of an SNSPD array composed of 14 independent pixels, achieving a system detection efficiency (SDE) of 90% in the telecom band. By reading each pixel of the array independently we show that the detector can detect telecom photons at 1.5 GHz with 45% absolute SDE. We exploit the dynamic PNR of the array to demonstrate accurate state reconstruction for different photon-number statistics for a wide range of light inputs, including operation with long-duration light pulses, as commonly obtained with some cavity-based sources. We show 2-photon and 3-photon fidelities of 74% and 57% respectively, which represent state-of-the-art results for fiber-coupled SNSPDs.
References in corpus (9)
- Optical Quantum Computing
- Quantum circuits with many photons on a programmable nanophotonic chip
- Boson sampling with 20 input photons in 60-mode interferometers at state spaces
- Photon number resolution using a time-multiplexed single-photon detector
- Fast Single Photon Detectors and real-time Key Distillation: Enabling High Secret Key Rate QKD Systems
- Ultimate low system dark count rate for superconducting nanowire single-photon detector
- A source of polarization-entangled photon pairs interfacing quantum memories with telecom photons
- Superconducting parallel nanowire detector with photon number resolving functionality
- An Integrated Photon-Pair Source with Monolithic Piezoelectric Frequency Tunability
Cited by in corpus (9)
- Advances in quantum imaging
- An SNSPD-based detector system for NASA's Deep Space Optical Communications project
- Enhanced Detection Rate and High Photon-Number Efficiencies with a Scalable Parallel SNSPD
- How well can superconducting nanowire single-photon detectors resolve photon number?
- Sputtered NbN Films for Ultrahigh Performance Superconducting Nanowire Single-Photon Detectors
- Improvements of readout signal integrity in mid-infrared superconducting nanowire single photon detectors
- Towards heralded distribution of polarization entanglement
- Near Infrared Quantum Ghost Spectroscopy for Threats Detection
- Low-dimensional platforms for single photon detection