Interference-enhanced optical force detection of weak light fields using a levitated nanoparticle

Fuente: arXiv
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Hauptverfasser: Alavi, Seyed K., Ezzo, Youssef, Pulikkathara, Ashik, Hong, Sungkun
Format: Preprint
Veröffentlicht: 2025
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author Alavi, Seyed K.
Ezzo, Youssef
Pulikkathara, Ashik
Hong, Sungkun
author_facet Alavi, Seyed K.
Ezzo, Youssef
Pulikkathara, Ashik
Hong, Sungkun
contents Optically levitated nanoparticles in vacuum provide a highly sensitive platform for probing weak light-matter interactions. In this work, we present an interference-based method to amplify the optical force exerted by a weak field on a nanoscale particle trapped in an optical tweezer. By allowing the weak field to interfere with the strong trapping beam, we significantly enhance the optical force compared to the case without interference. This amplified optical force enables the detection of the weak field through the particle's motion, reaching picowatt-level sensitivity under moderate vacuum conditions. We further discuss the potential of this approach for developing an ultrasensitive, nondestructive detector of light fields and for exploring optomechanical interactions at the single-photon level.
format Preprint
id arxiv_https___arxiv_org_abs_2506_03427
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Interference-enhanced optical force detection of weak light fields using a levitated nanoparticle
Alavi, Seyed K.
Ezzo, Youssef
Pulikkathara, Ashik
Hong, Sungkun
Quantum Physics
Optics
Optically levitated nanoparticles in vacuum provide a highly sensitive platform for probing weak light-matter interactions. In this work, we present an interference-based method to amplify the optical force exerted by a weak field on a nanoscale particle trapped in an optical tweezer. By allowing the weak field to interfere with the strong trapping beam, we significantly enhance the optical force compared to the case without interference. This amplified optical force enables the detection of the weak field through the particle's motion, reaching picowatt-level sensitivity under moderate vacuum conditions. We further discuss the potential of this approach for developing an ultrasensitive, nondestructive detector of light fields and for exploring optomechanical interactions at the single-photon level.
title Interference-enhanced optical force detection of weak light fields using a levitated nanoparticle
topic Quantum Physics
Optics
url https://arxiv.org/abs/2506.03427