Quantum-Enhanced Plasmonic Sensing

Published on 2018-05-14T20:53:25Z (GMT) by
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 changes in the refractive index. We demonstrate a 56% quantum enhancement in the sensitivity of state-of-the-art plasmonic sensor with measured sensitivities on the order of 10^(-10) RIU/sqrt(Hz), nearly 5 orders of magnitude better than previous proof-of-principle implementations of quantum-enhanced plasmonic sensors. 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.

Cite this collection

Marino, Alberto; Dowran, Mohammadjavad; Kumar, Ashok; Lawrie, Benjamin; Pooser, Raphael (2018): Quantum-Enhanced Plasmonic Sensing. The Optical Society. Collection.