CQuIC Seminars
Quantum Enhanced Plasmonic Sensors
Presented by Alberto Marino Valle, University of Oklahoma
One of the long standing goals of quantum optics has been the use of quantum states of light to enhance the sensitivity of devices. Plasmonic sensors, which are widely used in biological and chemical sensing applications and serve as a robust diagnostic tool, offer a unique opportunity to bring such an enhancement to real-life devices. In this talk I will describe our work on the interface between quantum states of light, known as twin beams, and plasmonic sensors. I will start by giving an overview of the source that we use to generate entangled twin beams, namely, four-wave mixing in an atomic vapor cell. I will describe the entanglement and spatial properties of the beams generated with this source. I will then present our recent study of the interface between these quantum states of light and localized surface plasmons. In particular, I will show that the transfer of entanglement from multi-spatial mode photons to plasmons and back to photons is a coherent process that preserves the entanglement properties and spatial information of the light. Finally, I will present results on the use of plasmonic structures consisting of an array of triangular nanoholes as sensors and show that a sensitivity enhancement of these plasmonic sensors is possible through the use of quantum states of light.
3:30 pm, Thursday, February 16, 2017
PAIS-2540, PAIS
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A schedule of talks within the Department of Physics and Astronomy is available on the P&A web site at http://physics.unm.edu/pandaweb/events/index.php