Quantum Embedded Superstates for Sensing Applications
Optical supercavity modes (superstates), i.e., hybrid modes emerging from the strong coupling of two modes of an open cavity, can support ultranarrow lines in their scattering spectra associated with quasi-bound states in the continuum (quasi-BIC). These modes are of great interest for sensing applications as they enable compact systems with unprecedented sensitivity. However, classical quasi-BIC sensors are fundamentally limited by the shot-noise limit, which may be overcome in quantum sensors. In this talk, I will discuss how a three-level quantum system (e.g., atom, quantum dot, superconducting qubit) can be tailored to support the quantum analog of superstates with an unboundedly narrow emission line. I will demonstrate that coupling such a system with a cavity (e.g., plasmonic or dielectric nanoparticle, microcavity, microwave resonator) enables sensing properties with excellent statistical features. The results can be applied to a plethora of quantum platforms, from superconducting circuits to cold atoms and quantum dots, opening exciting opportunities for quantum sensing and computing.
Date and Time
Location
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Registration
- Date: 20 May 2022
- Time: 03:00 PM to 04:00 PM
- All times are (GMT-05:00) US/Eastern
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- Starts 03 May 2022 12:02 PM
- Ends 20 May 2022 03:30 PM
- All times are (GMT-05:00) US/Eastern
- No Admission Charge
Speakers
Alex Krasnok, Ph.D.
Quantum Embedded Superstates for Sensing Applications
Optical supercavity modes (superstates), i.e., hybrid modes emerging from the strong coupling of two modes of an open cavity, can support ultranarrow lines in their scattering spectra associated with quasi-bound states in the continuum (quasi-BIC). These modes are of great interest for sensing applications as they enable compact systems with unprecedented sensitivity. However, classical quasi-BIC sensors are fundamentally limited by the shot-noise limit, which may be overcome in quantum sensors. In this talk, I will discuss how a three-level quantum system (e.g., atom, quantum dot, superconducting qubit) can be tailored to support the quantum analog of superstates with an unboundedly narrow emission line. I will demonstrate that coupling such a system with a cavity (e.g., plasmonic or dielectric nanoparticle, microcavity, microwave resonator) enables sensing properties with excellent statistical features. The results can be applied to a plethora of quantum platforms, from superconducting circuits to cold atoms and quantum dots, opening exciting opportunities for quantum sensing and computing.
Biography:
Prof. Alex Krasnok earned his Ph.D. from ITMO University (2013). After spending two years (2016-2018) as a research scientist at The University of Texas at Austin, and three years with CUNY Advanced Science Research Center (New York) as a Research Assistant Professor and Founding Director of Photonic Core Facility, he joined Florida International University in 2021 as a tenure-track Assistant Professor. Prof. Krasnok's current research interests are nanophotonics and quantum optics, emphasizing cross-disciplinary research. He has made significant contributions in extreme scattering engineering, nanoantennas, metasurfaces, optics of 2D transition-metal dichalcogenides, and low-loss dielectric nanostructures. Alex has authored or co-authored five books and book chapters, four patents, and more than 150 papers. He has earned several research awards and grants, including the gold medal of Nobel Laureate Zhores Alferov's Foundation (2016) and the Early-Career Award in Nanophotonics (2021).
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