When
Where
Title
Harnessing dissipation and noise for quantum sensing
Abstract
Quantum sensing and metrology seeks to use quantum states and ultimately entanglement to improve our ability measure a variety of signals and systems beyond what could be done classically. Dissipation is usually viewed as an anathema to quantum sensing, as it degrades and scrambles the correlations in a quantum state that could otherwise provide an advantage. In this talk, I’ll introduce a set of ideas showing that when properly controlled, dissipation and other kinds of non-unitary dynamics can actually be a resource for improved quantum sensing. I’ll discuss how dissipative processes can produce and stabilize entangled many-body states with advantages over traditional approaches based on coherent dynamics. I’ll also discuss a new modality for many-body sensing, where one attempts to optimally extract information emitted by a sensor system into its dissipative environment. These ideas are relevant to a number of experimental sensing platforms, especially those employing ensembles of two-level atoms or spins coupled to a cavity.
Bio
Aashish Clerk is a theoretical physicist and Professor of Molecular Engineering at the University of Chicago. Clerk’s research focuses on understanding complex phenomena in quantum systems that are both strongly driven and subject to dissipation; it intersects the fields of condensed matter, quantum optics and quantum information.
His work is motivated both by fundamental questions as well as potential applications to quantum technologies. He received his BSc from the University of Toronto and a PhD in Physics from Cornell University. Prior to joining the Pritzker School of Molecular Engineering, Professor Clerk served as Professor of Physics and Tier-1 Canada Research Chair at McGill University. His work has been recognized by several awards, including a 2020 Simons Foundation Investigator in Physics award and the 2015 Rutherford Medal in Physics from the Royal Society of Canada.
Can't Join Us In Person?
Register for the Zoom Webinar!
Subscribe to Upcoming Colloquium Announcements
Visit our website for future lecture dates and speaker information