Optimized Heralding Schemes for Single Photons
arXiv:1108.2693 · doi:10.1103/PhysRevA.84.033844
Abstract
A major obstacle to a practical, heralded source of single photons is the fundamental trade-off between high heralding efficiency and high production rate. To overcome this difficulty, we propose applying sequential spectral and temporal filtering on the signal photons before they are detected for heralding. Based on a multimode theory that takes into account the effect of simultaneous multiple photon-pair emission, we find that these filters can be optimized to yield both a high heralding efficiency and a high production rate. While the optimization conditions vary depending on the underlying photon-pair spectral correlations, all correlation profiles can lead to similarly high performance levels when optimized filters are employed. This suggests that a better strategy for improving the performance of heralded single-photon sources is to adopt an appropriate measurement scheme for the signal photons, rather than tailoring the properties of the photon-pair generation medium.
7 pages and 4 figures
References in corpus (11)
- Heralded Generation of Ultrafast Single Photons in Pure Quantum States
- Entangling Independent Photons by Time Measurement
- Photon pair-state preparation with tailored spectral properties by spontaneous four-wave mixing in photonic-crystal fiber
- Long-Distance Entanglement Distribution with Single-Photon Sources
- Experimental interference of independent photons
- Photonic crystal fibre source of photon pairs for quantum information processing
- Tailored photon-pair generation in optical fibers
- High purity bright single photon source
- Conditional preparation of single photons using parametric downconversion: A recipe for purity
- Nonclassical 2-photon interference with separate intrinsically narrowband fibre sources
- Heralding Single Photons Without Spectral Factorability
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- Limits on the heralding efficiencies and spectral purities of spectrally-filtered single photons from photon pair sources
- Antibunched Emission of Photon-Pairs via Quantum Zeno Blockade
- Mode-resolved Photon Counting via Cascaded Quantum Frequency Conversion
- Photon pair generation in multimode optical fibers via intermodal phase-matching
- Theory of filtered type-II PDC in the continuous-variable domain: Quantifying the impacts of filtering
- Third order parametric downconversion: a stimulated approach
- Erasing Quantum Distinguishability via Single-Mode Filtering