Optimally controlled quantum discrimination and estimation

Basilewitsch D, Yuan H, Koch CP (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Physical Review Research American Physical Society

Book Volume: 2

Article Number: 033396

Journal Issue: 3

DOI: 10.1103/PhysRevResearch.2.033396

Abstract

Quantum discrimination and estimation are pivotal for many quantum technologies, and their performance depends on the optimal choice of probe state and measurement. Here we show that their performance can be further improved by suitably tailoring the pulses that make up the interferometer. Developing an optimal control framework and applying it to the discrimination and estimation of a magnetic field in the presence of noise, we find an increase in the overall achievable state distinguishability. Moreover, the maximum distinguishability can be stabilized for times that are more than an order of magnitude longer than the decoherence time.

Involved external institutions

Universität Kassel DE Germany (DE) The Chinese University of Hong Kong (CUHK) CN China (CN)

How to cite

APA:

Basilewitsch, D., Yuan, H., & Koch, C.P. (2020). Optimally controlled quantum discrimination and estimation. Physical Review Research, 2(3). https://doi.org/10.1103/PhysRevResearch.2.033396

MLA:

Basilewitsch, Daniel, Haidong Yuan, and Christiane P. Koch. "Optimally controlled quantum discrimination and estimation." Physical Review Research 2.3 (2020).

BibTeX: Download