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Title: Heralding efficiency and correlated-mode coupling of near-IR fiber-coupled photon pairs

Journal Article · · Physical Review A - Atomic, Molecular, and Optical Physics
 [1];  [2];  [3];  [2];  [4];  [2];  [2];  [2];  [3]
  1. Massachusetts Inst. of Technology (MIT), Lexington, MA (United States). Lincoln Laboratory; Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Research Laboratory of Electronics
  2. Massachusetts Inst. of Technology (MIT), Lexington, MA (United States). Lincoln Laboratory
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Research Laboratory of Electronics
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

We report on a systematic experimental study of heralding efficiency and generation rate of telecom-band infrared photon pairs generated by spontaneous parametric down-conversion and coupled to single mode optical fibers. We define the correlated-mode coupling efficiency--an inherent source efficiency--and explain its relation to heralding efficiency. For our experiment, we developed a reconfigurable computer controlled pump-beam and collection-mode optical apparatus which we used to measure the generation rate and correlated-mode coupling efficiency. The use of low-noise, high-efficiency superconducting-nanowire single-photon-detectors in this setup allowed us to explore focus configurations with low overall photon flux. The measured data agree well with theory and we demonstrated a correlated-mode coupling efficiency of 97%±2%, which is the highest efficiency yet achieved for this type of system. These results confirm theoretical treatments and demonstrate that very high overall heralding efficiencies can, in principle, be achieved in quantum optical systems. We expect that these results and techniques will be widely incorporated into future systems that require, or benefit from, a high heralding efficiency.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1163588
Journal Information:
Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 90, Issue 4; ISSN 1050-2947
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 34 works
Citation information provided by
Web of Science

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Experimental nested purification for a linear optical quantum repeater journal October 2017
Device-independent quantum random-number generation journal September 2018
Introduction to the absolute brightness and number statistics in spontaneous parametric down-conversion journal February 2019
Wave-Function Engineering for Spectrally Uncorrelated Biphotons in the Telecommunication Band Based on a Machine-Learning Framework journal September 2019
Single-Mode Parametric-Down-Conversion States with 50 Photons as a Source for Mesoscopic Quantum Optics journal April 2016
Deterministic reshaping of single-photon spectra using cross-phase modulation journal March 2016
Heralded single-photon source utilizing highly nondegenerate, spectrally factorable spontaneous parametric downconversion journal January 2016
Path to increasing the coincidence efficiency of integrated resonant photon sources journal January 2017
High-performance source of spectrally pure, polarization entangled photon pairs based on hybrid integrated-bulk optics journal January 2018
Quantum-correlated photon pairs generated in a commercial 45  nm complementary metal-oxide semiconductor microelectronic chip journal January 2015
Thick-crystal regime in photon pair sources journal January 2016
Heralding single photons from a high-Q silicon microdisk journal January 2016
Thick-crystal regime in photon pair sources conference January 2016
A strong loophole-free test of local realism conference January 2016
Entanglement-Enhanced Sensing in a Lossy and Noisy Environment text January 2014
Single-Mode Parametric-Down-Conversion States with 50 Photons as a Source for Mesoscopic Quantum Optics text January 2015
Randomness extraction from Bell violation with continuous parametric down conversion text January 2018
Device independent quantum random number generation text January 2018
High-performance source of spectrally pure, polarization entangled photon pairs based on hybrid integrated-bulk optics text January 2018
12-photon entanglement and scalable scattershot boson sampling with optimal entangled-photon pairs from parametric down-conversion text January 2018

Figures / Tables (7)