PIRSA:22120065

Quantum Impulse Sensing with Mechanical Sensors in the Search for Dark Matter

Ghosh, S. (2022). Quantum Impulse Sensing with Mechanical Sensors in the Search for Dark Matter. Perimeter Institute. https://pirsa.org/22120065

Ghosh, Sohitri. Quantum Impulse Sensing with Mechanical Sensors in the Search for Dark Matter. Perimeter Institute, Dec. 01, 2022, https://pirsa.org/22120065 

          @misc{ pirsa_PIRSA:22120065,
            doi = {10.48660/22120065},
            url = {https://pirsa.org/22120065},
            author = {Ghosh, Sohitri},
            keywords = {Quantum Information},
            language = {en},
            title = {Quantum Impulse Sensing with Mechanical Sensors in the Search for Dark Matter},
            publisher = {Perimeter Institute},
            year = {2022},
            month = {dec},
            note = {PIRSA:22120065 see, \url{https://pirsa.org}}
          }

Sohitri Ghosh

University of Maryland, College Park

Talk number
PIRSA:22120065
Collection
Talk Type
Subject
Abstract

Recent advances in mechanical sensing technologies have led to the suggestion that heavy dark matter candidates around the Planck mass range could be detected through their gravitational interaction alone. The Windchime collaboration is developing the necessary techniques, systems, and experimental apparatus using arrays of optomechanical sensors that operate in the regime of high-bandwidth force detection, i.e., impulse metrology.  Today's sensors can be limited by the added noise due to the act of measurement itself. Techniques to go beyond this limit include squeezing of the light used for measurement and backaction evading measurement by estimating quantum non-demolition operators — typically the momentum of a mechanical resonator well above its resonance frequency. In this talk, we will discuss the theoretical limits to noise reduction using such quantum enhanced readout techniques for these optomechanical sensors.