A5052407172- Quantum Information and Cryptography
- Photonic and Optical Devices
- Advanced Optical Sensing Technologies
- Quantum optics and atomic interactions
- Radiation Detection and Scintillator Technologies
- Quantum Mechanics and Applications
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Mechanical and Optical Resonators
- Advanced Fiber Laser Technologies
- Quantum Computing Algorithms and Architecture
- Radiation Effects in Electronics
- Advanced Fluorescence Microscopy Techniques
- Superconducting and THz Device Technology
- Nanowire Synthesis and Applications
- Advanced Frequency and Time Standards
- Nuclear Physics and Applications
- Dark Matter and Cosmic Phenomena
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Semiconductor Detectors and Materials
- Diamond and Carbon-based Materials Research
- Optical Systems and Laser Technology
- Electronic and Structural Properties of Oxides
- Semiconductor Quantum Structures and Devices
- Medical Imaging Techniques and Applications
California Institute of Technology
2019-2024
Abstract We present the first detailed study of an 8-channel 2×2 mm 2 WSi superconducting microwire single photon detector (SMSPD) array exposed to 120 GeV proton beam and 8 electron pion at Fermilab Test Beam Facility. The SMSPD detection efficiency was measured for time protons, electrons, pions, enabled by use a silicon tracking telescope that provided precise spatial resolution 30 μm protons 130 electrons pions. result demonstrated consistent across pixels different bias currents. Time...
Superconducting nanowire single-photon detectors are a key technology for quantum information and science due to their high efficiency, low timing jitter, dark counts. In this work, we present detector single 1550 nm photons with up 78% detection jitter below 50 ps FWHM, 158 counts/s count rate, as well maximum rate of 1.5 giga-counts/s at 3 dB compression. The PEACOQ (Performance-Enhanced Array Counting Optical Quanta) comprises linear array 32 straight superconducting niobium nitride...
Superconducting nanowire single-photon detectors (SNSPDs) are the highest-performance photon-counting technology in near infrared, but traditional designs typically trade off between timing resolution and detection efficiency. The authors utilize transmission-line engineering differential readout to achieve a design with high efficiency low jitter simultaneously. This also enables imaging capabilities photon-number resolution, is compatible commercial time taggers. device versatile solution...
Deterministic generation of single photons is essential for many quantum information technologies. A bulk optical nonlinearity emitting a photon pair, where the measurement one heralds presence other, commonly used with caveat that single-photon emission rate constrained due to trade-off between multiphoton events and pair rate. Using an efficient low noise photon-number-resolving superconducting nanowire detector we herald, in real time, at telecommunication wavelength. We perform...
Superconducting nanowire single photon detectors (SNSPDs) are the highest-performing technology for time-resolved single-photon counting from UV to near-infrared. The recent discovery of sensitivity in micrometer-scale superconducting wires is a promising pathway explore large active area devices with application dark matter searches and fundamental physics experiments. We present 8-pixel 1 mm2 microwire (SMSPDs) μm-wide fabricated WSi MoSi films various stoichiometries using electron-beam...
Superconducting nanowire single-photon detectors (SNSPDs) are a leading detector type for time correlated single photon counting, especially in the near-infrared. When operated at high count rates, SNSPDs exhibit increased timing jitter caused by internal device properties and features of RF amplification chain. Variations pulse height shape lead to variations latency measurements. To compensate this, we demonstrate calibration method that correlates delays detection events with elapsed...
Quantum teleportation is essential for many quantum information technologies including long-distance networks. Using fiber-coupled devices, state-of-the-art low-noise superconducting nanowire single photon detectors and off-the-shelf optics, we achieve of time-bin qubits at the telecommunication wavelength 1536.5 nm. We measure fidelities >=90% that are consistent with an analytical model our system, which includes realistic imperfections. To demonstrate compatibility setup deployed...
A free-space coupled superconducting nanowire single-photon detector with high efficiency at 1550 nm, sub-0.1 Hz dark count rate, and sub-15 ps timing jitter is demonstrated.
We demonstrate a three-node quantum network for C-band photon pairs using 2 of 59 km deployed fiber between Fermi and Argonne National Laboratories. The are directed to nodes standard telecommunication switch synchronized picosecond-scale timing resolution coexisting O- or L-band optical clock distribution system. measure reduction coincidence-to-accidental ratio (CAR) the from 51 $\pm$ 5.3 0.4 due Raman scattering O-band pulses. Despite this reduction, CAR is nevertheless suitable networks.
This work culminates in a demonstration of an alternative frequency-domain multiplexing (FDM) scheme for superconducting nanowire single-photon detectors (SNSPDs) using the kinetic inductance parametric up-converter (KPUP) made out NbTiN. There are multiple architectures SNSPDs that already use, but FDM could prove superior applications where operational bias currents very low, especially mid-infrared and far-infrared SNSPDs. Previous schemes integrated SNSPD within resonator, while, this...
The operation of long-distance quantum networks requires photons to be synchronized and must account for length variations channels. We demonstrate a 200 MHz clock-rate fiber optic-based network using off-the-shelf components combined with custom-made electronics telecommunication C-band photons. is backed by scalable fully automated synchronization system ps-scale timing resolution. Synchronization the achieved distributing O-band-wavelength laser pulses between nodes. Specifically, we...
We report on a free-space-coupled superconducting nanowire single-photon detector array developed for NASA's Deep Space Optical Communications project (DSOC). The serves as the downlink DSOC's primary ground receiver terminal located at Palomar Observatory's 200-inch Hale Telescope. 64-pixel WSi comprises four quadrants of 16 co-wound pixels covering 320-µm diameter active area and embedded in an optical stack. system also includes cryogenic optics filtering focusing signal electronics...
We report the first demonstration of using Quantum Instrumentation and Control Kit (QICK) system on RFSoC-FPGA technology to drive electro-optic intensity modulator that generate time-bin entangled photon pairs detect signals. With QICK system, we achieve high levels performance metrics including coincidence-to-accidental ratio exceeding 150, entanglement visibility 95%, consistent with achieved conventional waveform generators. also demonstrate simultaneous detector readout digitization...
Superconducting nanowire single photon detectors (SNSPDs) are the highest-performing technology for time-resolved single-photon counting from UV to near-infrared. The recent discovery of sensitivity in micrometer-scale superconducting wires is a promising pathway explore large active area devices with application dark matter searches and fundamental physics experiments. We present 8-pixel $1 mm^2$ microwire (SMSPDs) $1\,\mathrm{μm}$-wide fabricated WSi MoSi films various stoichiometries...
This work culminates in a demonstration of an alternative Frequency Domain Multiplexing (FDM) scheme for Superconducting Nanowire Single-Photon Detectors (SNSPDs) using the Kinetic inductance Parametric UP-converter (KPUP) made out NbTiN. There are multiple multiplexing architectures SNSPDs that already use, but FDM could prove superior applications where operational bias currents very low, especially mid- and far-infrared SNSPDs. Previous schemes integrated SNSPD within resonator, while...
We demonstrate an entanglement swapping protocol for time-bin qubits in a fiber-based quantum network at Fermilab. report state-of-the-art visibilities of up to 92.3 ± 3.8%.
We report on a free-space-coupled superconducting nanowire single-photon detector array developed for NASA's Deep Space Optical Communications project (DSOC). The serves as the downlink DSOC's primary ground receiver terminal located at Palomar Observatory's 200-inch Hale Telescope. 64-pixel WSi comprises four quadrants of 16 co-wound pixels covering 320 micron diameter active area and embedded in an optical stack. system also includes cryogenic optics filtering focusing signal electronics...
We present the first detailed study of an 8-channel $2\times2$ mm$^{2}$ WSi superconducting microwire single photon detector (SMSPD) array exposed to 120 GeV proton beam and 8 electron pion at Fermilab Test Beam Facility. The SMSPD detection efficiency was measured for time protons, electrons, pions, enabled by use a silicon tracking telescope that provided precise spatial resolution 30 $\mu$m protons 130 electrons pions. result demonstrated consistent across pixels different bias currents....
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Superconducting nanowire single-photon detectors (SNSPDs) are the highest performing photon-counting technology in near-infrared (NIR). Due to delay-line effects, large area SNSPDs typically trade-off timing resolution and detection efficiency. Here, we introduce a detector design based on transmission line engineering differential readout for device-level signal conditioning, enabling high system efficiency low jitter, simultaneously. To make our compatible with single-ended time taggers,...
We improve a single photon source based on spontaneous parametric down-conversion by heralding one of the output modes using number resolving superconducting nanowire detector. measure reduced magnitude second order cross correlation conditioned detection in other mode.
We demonstrate a three-node quantum network for C-band photon pairs using 2 of 59 km deployed fiber between Fermi and Argonne National Laboratories. The are directed to nodes standard telecommunication switch synchronized picosecond-scale timing resolution coexisting O- or L-band optical clock distribution system. measure reduction coincidence-to-accidental ratio (CAR) the from 51 $\pm$ 5.3 0.4 due Raman scattering O-band pulses. Despite this reduction, CAR is nevertheless suitable networks.
We demonstrate large-area superconducting nanowire single-photon detectors (SNSPDs) with simultaneous high system detection efficiency and low jitter. describe the device architecture discuss optimal readout setup for practical applications.