Resolving Photon Numbers Using a Superconducting Nanowire with Impedance-Matching Taper.

Time- and number-resolved photon detection is crucial for quantum information processing. Existing photon-number-resolving (PNR) detectors usually suffer from limited timing and dark-count performance or require complex fabrication and operation. Here we demonstrate a PNR detector at telecommunication wavelengths based on a single superconducting nanowire with an integrated impedance-matching taper. The taper provides a kΩ load impedance to the nanowire, making the detector's output amplitude sensitive to the number of photon-induced hotspots. The prototyping device was able to resolve up to four absorbed photons with 16.1 ps timing jitter and <2 c.p.s. device dark count rate. Its exceptional distinction between single- and two-photon responses is ideal for high-fidelity coincidence counting and allowed us to directly observe bunching of photon pairs from a single output port of a Hong-Ou-Mandel interferometer. This detector architecture may provide a practical solution to applications that require high timing resolution and few-photon discrimination.

[1]  D. Englund,et al.  A scalable multi-photon coincidence detector based on superconducting nanowires , 2017, Nature Nanotechnology.

[2]  Generation of photon number states , 2003, InternationalQuantum Electronics Conference, 2004. (IQEC)..

[3]  Andrea Fiore,et al.  Superconducting nanowire photon-number-resolving detector at telecommunication wavelengths , 2008 .

[4]  Bryan S. Robinson,et al.  Photon-number-resolution with sub-30-ps timing using multi-element superconducting nanowire single photon detectors , 2008, 0805.2397.

[5]  Daniel J Gauthier,et al.  Scalable cryogenic readout circuit for a superconducting nanowire single-photon detector system. , 2017, The Review of scientific instruments.

[6]  Di Zhu,et al.  A distributed electrical model for superconducting nanowire single photon detectors , 2018, Applied Physics Letters.

[7]  Eric A. Dauler,et al.  Readout of superconducting nanowire single-photon detectors at high count rates , 2013, 1302.2852.

[8]  R. Mirin,et al.  Photon-number-discriminating detection using a quantum-dot, optically gated, field-effect transistor , 2007 .

[9]  H. Leduc,et al.  A broadband superconducting detector suitable for use in large arrays , 2003, Nature.

[10]  Qingyuan Zhao,et al.  A high speed and high efficiency superconducting photon number resolving detector , 2019, Superconductor Science and Technology.

[11]  R. Hadfield Single-photon detectors for optical quantum information applications , 2009 .

[12]  Luigi Frunzio,et al.  Reset dynamics and latching in niobium superconducting nanowire single-photon detectors , 2010, 1008.0895.

[13]  V. Altuzar,et al.  Atmospheric pollution profiles in Mexico City in two different seasons , 2003 .

[14]  F. Marsili,et al.  Physics and application of photon number resolving detectors based on superconducting parallel nanowires , 2009, 0902.4824.

[15]  K. Berggren,et al.  Superconducting nanowire single-photon detector with integrated impedance-matching taper , 2018, Applied Physics Letters.

[16]  J Fan,et al.  Invited review article: Single-photon sources and detectors. , 2011, The Review of scientific instruments.

[17]  T. Gerrits,et al.  Calibration of free-space and fiber-coupled single-photon detectors , 2019, Metrologia.

[18]  F. Marsili,et al.  Detecting single infrared photons with 93% system efficiency , 2012, 1209.5774.

[19]  Xiang Guo,et al.  Broadband on-chip single-photon spectrometer , 2019, Nature Communications.

[20]  Karl K. Berggren,et al.  A superconducting nanowire can be modeled by using SPICE , 2018 .

[21]  Eric A. Dauler,et al.  Kinetic-inductance-limited reset time of superconducting nanowire photon counters , 2005, physics/0510238.

[22]  Andrea Fiore,et al.  Photon-number resolving detector based on a series array of superconducting nanowires , 2012 .

[23]  O. Okunev,et al.  Picosecond superconducting single-photon optical detector , 2001 .

[24]  K. Berggren,et al.  A Single-Photon Imager Based on Microwave Plasmonic Superconducting Nanowire , 2016, 1605.08693.

[25]  A. J. Shields,et al.  An avalanche-photodiode-based photon-number-resolving detector , 2008, 0807.0330.

[26]  P. Kwiat,et al.  High-efficiency single-photon generation via large-scale active time multiplexing , 2018, Science Advances.

[27]  C. M. Natarajan,et al.  Superconducting nanowire single-photon detectors: physics and applications , 2012, 1204.5560.

[28]  Y. Ivry,et al.  Superconducting Nanowires for Single‐Photon Detection: Progress, Challenges, and Opportunities , 2018, Advanced Quantum Technologies.

[29]  Christoph Simon,et al.  Practical quantum repeaters with parametric down-conversion sources , 2015, 1505.03470.

[30]  Jesse K. Adams,et al.  Microwave dynamics of high aspect ratio superconducting nanowires studied using self-resonance , 2016, 1602.06895.

[31]  Andrea Fiore,et al.  Nanoscale optical detector with single-photon and multiphoton sensitivity. , 2010, Nano letters.