565 citations · 1.3k across the 15 of their papers we have counts for
15 papers
Improve photon number discrimination for a superconducting series nanowire detector by applying a digital matched filter
Hao Hao, Qing-Yuan Zhao, Ling-Dong Kong +15
Photon number resolving (PNR) is an important capacity for detectors working in quantum and classical applications. Although a conventional superconducting nanowire single-photon d…
Mid-infrared single photon detector with superconductor MoSi nanowire
Qi Chen, Rui Ge, Labao Zhang +11
A mid-infrared single photon detector (MIR-SNSPD) was reported based on 30 nm-wide superconductor molybdenum silicide nanowires in this work. Saturated quantum efficiencies (QEs) w…
An optics-free computational spectrometer using a broadband and tunable dynamic detector
Ling-Dong Kong, Qing-Yuan Zhao, Hui Wang +11
Optical spectrometers are the central instruments for exploring the interaction between light and matter. The current pursuit of the field is to design a spectrometer without the n…
Superconducting nanowire single-photon detector with integrated impedance-matching taper
Di Zhu, Marco Colangelo, Boris A. Korzh +11
Conventional readout of a superconducting nanowire single-photon detector (SNSPD) sets an upper bound on the output voltage to be the product of the bias current and the load imped…
A distributed electrical model for superconducting nanowire single photon detectors
Qing-Yuan Zhao, Daniel F. Santavicca, Di Zhu +2
To analyze the switching dynamics and output performance of a superconducting nanowire single photon detector (SNSPD), the nanowire is usually modelled as an inductor in series wit…
Demonstrating sub-3 ps temporal resolution in a superconducting nanowire single-photon detector
B. A. Korzh, Q-Y. Zhao, S. Frasca +20
Improving the temporal resolution of single photon detectors has an impact on many applications, such as increased data rates and transmission distances for both classical and quan…
A scalable multi-photon coincidence detector based on superconducting nanowires
Di Zhu, Qing-Yuan Zhao, Hyeongrak Choi +4
Coincidence detection of single photons is crucial in numerous quantum technologies and usually requires multiple time-resolved single-photon detectors. However, the electronic rea…
A compact superconducting nanowire memory element operated by nanowire cryotrons
Qing-Yuan Zhao, Emily A. Toomey, Brenden A. Butters +4
A superconducting loop stores persistent current without any ohmic loss, making it an ideal platform for energy efficient memories. Conventional superconducting memories use an arc…
Frequency pulling and mixing of relaxation oscillations in superconducting nanowires
Emily Toomey, Qing-Yuan Zhao, Adam N. McCaughan +1
Many superconducting technologies such as rapid single flux quantum computing (RSFQ) and superconducting quantum interference devices (SQUIDs) rely on the modulation of nonlinear d…
A nanoCryotron comparator can connect single-flux quantum circuits to conventional electronics
Qing-Yuan Zhao, Adam N. McCaughan, Andrew E. Dane +2
Integration with conventional electronics offers a straightforward and economical approach to upgrading existing superconducting technologies, such as scaling up superconducting de…
Superconducting nanowire detector jitters limited by detector geometry
Niccolò Calandri, Qing-Yuan Zhao, Di Zhu +2
Detection jitter quantifies variance introduced by the detector in the determination of photon arrival time. It is a crucial performance parameter for systems using superconducting…
Sensing supercurrents using geometric effects
Adam N. McCaughan, Nathnael Abebe, Qing-Yuan Zhao +1
We describe a superconducting three-terminal device that uses a simple geometric effect known as current crowding to sense the flow of current and actuate a readout signal. The dev…
A Single-Photon Imager Based on Microwave Plasmonic Superconducting Nanowire
Qing-Yuan Zhao, Di Zhu, Niccolò Calandri +6
Detecting spatial and temporal information of individual photons by using single-photon-detector (SPD) arrays is critical to applications in spectroscopy, communication, biological…
Free space-coupled superconducting nanowire single photon detectors for infrared optical communications
Francesco Bellei, Alyssa P. Cartwright, Adam N. McCaughan +4
This paper describes the construction of a cryostat and an optical system with a free-space coupling efficiency of 56.5% +/- 3.4% to a superconducting nanowire single-photon detect…
Eight-fold signal amplification of a superconducting nanowire single-photon detector using a multiple-avalanche architecture
Qingyuan Zhao, Adam McCaughan, Andrew Dane +6
Superconducting nanowire avalanche single-photon detectors (SNAPs) with n parallel nanowires are advantageous over single-nanowire detectors because their output signal amplitude s…