Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session N52: Theoretical Advances in Quantum Metrology
11:30 AM–2:30 PM,
Wednesday, March 6, 2024
Room: 201AB
Sponsoring
Unit:
DQI
Chair: Nima Leclerc, MITRE Corporation
Abstract: N52.00003 : Analysis of the optimal solution of quantum metrology with quantum decoherence
11:54 AM–12:06 PM
Presenter:
Chungwei Lin
(Mitsubishi Electric Research Laboratories)
Authors:
Chungwei Lin
(Mitsubishi Electric Research Laboratories)
Dries Sels
(NYU)
Although the resulting optimal controls appear complicated, we identify two classes of problem-specific characterisitic states, the Heisenberg-limit (HL) state and the decoherence-free subspace, which are crucial in understanding the optimal quantum trajectories.
For the intemediate evolution time where the quantum decoherence is still small, the optimal control takes the system to the HL state. When the evolution time is long, the optimal control takes the system to the decoherence free subspace.
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