Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N70: Quantum Sensing Fundamentals
11:30 AM–2:30 PM,
Wednesday, March 8, 2023
Room: Room 409
Sponsoring
Unit:
DQI
Chair: Lev Krayzman, Princeton University
Abstract: N70.00007 : Optimal time for sensing in open quantum systems*
12:42 PM–12:54 PM
Presenter:
zain H Saleem
(Argonne National Laboratory)
Authors:
zain H Saleem
(Argonne National Laboratory)
Anil Shaji
(Indian Institute of Science Education and Research Thiruvananthapuram)
Stephen K Gray
(Argonne National Laboratory)
demonstrate that the conventional definition of the QFI can fail to correlate with the system dynamics. A modified form of the QFI is proposed that is shown to be superior and allows us to determine the optimal time for sensing in these open quantum systems. We also study the dynamics of the system from an effective non-Hermitian dynamics standpoint and use it to understand the scaling of quantum Fisher information with size of the system.
*This work is based upon work supported by the U.S. Department of Energy Office of Science National Quantum Information Science Research Centers.
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