Observation of the spin Hall effect of light by a single-photon detector

We use a single-photon detector to detect the spin Hall effect of light (SHEL) of a quasi-single-photon beam obtained in this Letter. The physics of the spin Hall effect and its quantum weak measurement method with a dimensionless pointer are elucidated through particle number representation. Our we...

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Bibliographic Details
Published in:Optics letters 2024-06, Vol.49 (11), p.3014
Main Authors: Jiang, Yinghang, Wu, Jiguo, Ge, Rongchun, Zhang, Zhiyou
Format: Article
Language:English
Subjects:
Measurement methods
Noise levels
Noise measurement
Photon beams
Photonics
Photons
Position measurement
Quantum Hall effect
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Summary:We use a single-photon detector to detect the spin Hall effect of light (SHEL) of a quasi-single-photon beam obtained in this Letter. The physics of the spin Hall effect and its quantum weak measurement method with a dimensionless pointer are elucidated through particle number representation. Our weak measurement scheme obviates the necessity of high-resolution single-photon array detectors. Consequently, we have successfully observed the spin Hall effect within a 20 ns temporal window using a position-resolution-independent single-photon detector with remarkably low-noise levels. The weak measurement of the dimensionless pointer presented in this Letter boosts both the detection accuracy and the response speed of the photonics spin Hall effect, thereby contributing significantly to fundamental theoretical research in spin photonics and precise measurements of physical property parameters.
ISSN:0146-9592
1539-4794
1539-4794
DOI:10.1364/OL.522132