Improved Heralded Single-Photon Source with a Photon-Number-Resolving Superconducting Nanowire Detector
Samantha I. Davis, Andrew Mueller, Raju Valivarthi, Nikolai Lauk, Lautaro Narvaez, Boris Korzh, Andrew D. Beyer, Olmo Cerri, Marco Colangelo, Karl K. Berggren, Matthew D. Shaw, Si Xie, Neil Sinclair, Maria Spiropulu
DOI 10.1103/PhysRevApplied.18.064007 · Physical Review Applied
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Deterministic generation of single photons is essential for many quantum information technologies. A bulk optical nonlinearity emitting a photon pair, where the measurement of one of the photons heralds the presence of the other, is commonly used with the caveat that the single-photon emission rate is constrained due to a trade-off between multiphoton events and pair emission rate. Using an efficient and low noise photon-number-resolving superconducting nanowire detector we herald, in real time, a single photon at telecommunication wavelength. We perform a second-order photon correlation g2(0) measurement of the signal mode conditioned on the measured photon number of the idler mode for various pump powers and demonstrate an improvement of a heralded single-photon source. We develop an analytical model using a phase-space formalism that encompasses all multiphoton effects and relevant imperfections, such as loss and multiple Schmidt modes. We perform a maximum-likelihood fit to test the agreement of the model to the data and extract the best-fit mean photon number μ of the pair source for each pump power. A maximum reduction of 0.118±0.012 in the photon g2(0) correlation function at μ=0.327±0.007 is obtained, indicating a strong suppression of multiphoton emissions. For a fixed g2(0)=7×10−3, we increase the single pair generation probability by 25%. Our experiment, built using fiber-coupled and off-the-shelf components, delineates a path to engineering ideal sources of single photons.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NbN Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| WSi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Experimental Test of Theories of the Detection Mechanism in a Nanowire Superconducting Single Photon Detector
similarity 0.96J. J. Renema et al.
Source status unknown — claims are unverified
Measuring intensity correlations with a two-element superconducting nanowire single-photon detector
similarity 0.95Eric A. Dauler et al.
Source status unknown — claims are unverified
High-fidelity conversion of photonic quantum information to telecommunication wavelength with superconducting single-photon detectors
similarity 0.95Rikizo Ikuta et al.
Source status unknown — claims are unverified
Multiphoton enhanced resolution for superconducting nanowire single-photon detector-based time-of-flight lidar systems
similarity 0.94Adrian S. Abazi et al.
Source status unknown — claims are unverified
Design of NbN Superconducting Nanowire Single-Photon Detectors with Enhanced Infrared Detection Efficiency
similarity 0.94Q. Wang et al.
Source status unknown — claims are unverified
Intrinsic Timing Jitter and Latency in Superconducting Nanowire Single-photon Detectors
similarity 0.94J.P. Allmaras et al.
Source status unknown — claims are unverified