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Title: Quantum-enhanced plasmonic sensing

Journal Article · · Optica

Quantum resources can enhance the sensitivity of a device beyond the classical shot noise limit and, as a result, revolutionize the field of metrology through the development of quantum-enhanced sensors. In particular, plasmonic sensors, which are widely used in biological and chemical sensing applications, offer a unique opportunity to bring such an enhancement to real-life devices. Here, we use bright entangled twin beams to enhance the sensitivity of a plasmonic sensor used to measure local changes in the refractive index. We demonstrate a 56% quantum enhancement in the sensitivity of a state-of-the-art plasmonic sensor when compared with the corresponding classical configuration and a 24% quantum enhancement when compared to an optimal single-beam classical configuration. We measure sensitivities on the order of 10–10 RIU / √Hz, nearly 5 orders of magnitude better than previous proof-of-principle implementations of quantum-enhanced plasmonic sensors. Furthermore, these results promise significant enhancements in ultratrace label-free plasmonic sensing and will find their way into areas ranging from biomedical applications to chemical detection.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1461064
Journal Information:
Optica, Vol. 5, Issue 5; ISSN 2334-2536
Publisher:
Optical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 65 works
Citation information provided by
Web of Science

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Cited By (10)

Coupling effects in single-mode and multimode resonator-coupled system journal January 2019
Spatial squeezing in bright twin beams generated with four-wave mixing: Constraints on characterization with an electron-multiplying charge-coupled-device camera journal December 2019
Ultrasonic Influence on Plasmonic Effects Exhibited by Photoactive Bimetallic Au-Pt Nanoparticles Suspended in Ethanol journal June 2019
Optimal phase sensitivity by quantum squeezing based on a Mach–Zehnder interferometer journal January 2020
Quantum plasmonic sensing using single photons journal January 2018
Biosensors for Epilepsy Management: State-of-Art and Future Aspects journal March 2019
Quantum interferometry with microwave-dressed F = 1 spinor Bose-Einstein condensates: Role of initial states and long-time evolution journal December 2019
Twin-beam-enhanced displacement measurement of a membrane in a cavity journal December 2019
Quantum tomography of the photon-plasmon conversion process in a metal hole array journal January 2019
Twin-beam-enhanced displacement measurement of a membrane in a cavity text January 2019


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