Heralded Generation of High-Visibility Three-Photon NOON States
Heonoh Kim, Hee Su Park, and Sang-Kyung Choi
TL;DR
This paper reports an experimental method to generate high-visibility three-photon NOON states using a single SPDC source, demonstrating potential for quantum metrology with improved phase sensitivity.
Contribution
It introduces a novel heralded three-photon NOON state generator that achieves high visibility interference fringes without background subtraction.
Findings
Visibility > 70% in interference fringes
Deterministic generation of three-photon entangled states
Observation of three-photon de Broglie wavelength
Abstract
We describe an experimental demonstration of a novel three-photon NOON state generator using a single source of photons based on spontaneous parametric down-conversion (SPDC). The three-photon number-entangled state is deterministically generated by the detection of a heralding photon. Interference fringes measured with an emulated three-photon absorber reveal the three-photon de Broglie wavelength and exhibit visibility > 70% without background subtraction.
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Taxonomy
TopicsNeural Networks and Reservoir Computing · Photonic and Optical Devices · Photorefractive and Nonlinear Optics