Work

Lindblad estimation with fast and precise quantum control

Year: 2025

Type: article

Abstract: In quantum metrology, Lindblad estimation spans a host of applications, from probing weak stochastic signals to noise spectroscopy and characterization of emerging technologies. Regrettably, the ultimate quantum limits of Lindblad estimation are not understood in general. By examining the performance of the optimal sequential strategy that can simulate any other metrological strategy, the authors show that it is best to rapidly projectively measure and reinitialize the quantum state. This protocol may accelerate searches for stochastic gravitational waves, quantum gravity, and axionic dark matter, and also may enhance noise spectroscopy with qubits and Pauli Lindblad estimation.

Source: Physical Review Applied

DOI: 10.1103/6yzb-43rs

Authors: James W. Gardner, Simon A. Haine, Joseph J. Hope, Yanbei Chen, Tuvia Gefen

Institutions: Australian National University, California Institute of Technology, Hebrew University of Jerusalem

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green