arXiv:0910.2440 · Physical Review A

Limits of heralded single-photon sources based on parametric photon-pair generation

Stéphane Virally, S. Lacroix, Nicolas Godbout

Published Jan 14, 2010• 4 citations

Abstract

We derive calculations on the statistics of a heralded single-photon source based on parametric photon-pair generation. These calculations highlight fundamental and practical limits for these sources and show which physical parameters can be optimized to improve the quality of a real source.

DOI: 10.1103/physreva.81.013808

Related papers

Charactering fiber-based source of heralded single photons

Lei Yang, Xiaoxin Ma, Xueshi Guo +2 more

Based on the photon pairs generated from an optical fiber by a pulsed pump, we study the second-order coherence function, heralding efficiency, and temporal indistinguishability of the heralded single photons as functions of source parameters.

International Conference on Multimedia Technology (ICMT)Jul 1, 20111 citation

Exploring the limits of multiplexed photon-pair sources for the preparation of pure single-photon states

Robert J. A. Francis-Jones, Peter J. Mosley

Current sources of heralded single photons based on nonlinear optics operate in a probabilistic manner. In order to build quantum-enhanced devices based around the use of single photons, compact, turn-key and deterministic sources are required. A possible solution is to multiplex a number of sources to increase the single-photon generation probability and in so doing reducing the waiting time to deliver large numbers of photons simultaneously, from independent sources. Previously it has been shown that, in the ideal case, 17 multiplexed sources allow deterministic generation of heralded single photons [Christ and Silberhorn, Phys. Rev. A 85, 023829 (2012)]. Here we extend this analysis to include undesirable effects of detector inefficiency and photon loss on a number of multiplexed sources using a variety of different detectors for heralding. We compare these systems for fixed signal-to-noise ratio to allow a direct comparison of performance for real- world heralded single photon sources.

arXiv:1409.1394Sep 4, 20149 citations

Properties of high quality heralded single photon source based on fibers at 1.5 μm

Qiang Zhou, Wei Zhang, Yidong Huang +1 more

Single photons are essential resource for quantum communication and quantum information processing, which can carry quantum information to distant locations. A promising scheme for single photon generation is the heralded single photon source (HSPS), which is based on the generation of correlated photon pairs (CPPs). Utilizing the quantum correlation property of the CPPs, one photon of the CPP is detected providing an electrical signal to herald the other photon as a single photon output. Recently, 1.5 μm CPP generation through spontaneously four wave-mixing (SFWM) in fiber has focused much attention, which provides a practical way to realize 1.5 μm fiber-based HSPS. The quality of a HSPS is described by the preparation efficiency and g(2)(0). In the fiber-based HSPS, the preparation efficiency is determined by the loss of the filtering and splitting system and the noise photons generated by spontaneously Raman scattering (SpRS). Considering the impact of the SpRS can be reduced by cooling the fiber and optimizing the frequency detuning of filtering and splitting system, the loss of the filtering and splitting system may give a theoretical up-limit of the preparation efficiency. In this paper, using commercial fiber components, we realize a high quality HSPS based on cooled fiber with a preparation efficiency of 80% under a g(2)(0) of0.06, showing its great potential in the application of quantum information technology.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIENov 29, 20120 citations

Integrated sources of single photon states based on nonlinear effects

Sébastien Tanzilli

A review on heralded single photon state sources based on spontaneous parametric down-conversion is presented.

Jun 26, 20140 citations

Controlling correlations of paired photons for fundamental physics and applications in quantum imaging and generation of heralded single photons

Omar Calderón Losada

Jan 1, 20190 citations

An excess-photon suppressed heralded single photon source combining multiple down-converters and cascaded detectors (Conference Presentation)

Takayuki Kiyohara, Ryo Okamoto, Shigeki Takeuchi

Heralded single photon sources (HSPS) using spontaneous parametric down conversion (SPDC) are widely used in photonic quantum information. However, the excess-photon pair generation in SPDC process is a problem, which results in the events where more than two photons exist in a pulse. Such excess photons degrade the visibility (V) of two-photon Hong-Ou-Mandel interference, and are one of the main error causes in the advanced linear optics photonic circuits. Recently, we have developed a novel HSPS which combines two methods to suppress such excess photon numbers. The first method (A) is to use multiple SPDC sources in one HSPS, where upon the detection of the idler photon from one of the source, the corresponding signal photon is output. The second method (B) is to use cascaded detectors to monitor the photon-pair number generated from the source, where the detector distinguish the single-pair generation from multi-pair generation and thus the excess-photon generation can be suppressed. In this presentation, we report the theoretical calculations how such a source can improve the visibility for a two photon interference. For example, when the average number of pairs from SPDC in a pulse is 0.1, and the detection efficiency is 70%, V= 83.2% for a conventional HSPS. V is improved to 90.3%, 87.1% and 92.7% by using method A, B and our hybrid approach, respectively.

Dec 7, 20160 citations