Work

Tight bound on finite-resolution quantum thermometry at low temperatures

Year: 2020

Type: article

Abstract: This work analyzes the fundamental precision limits for thermometry on cold quantum systems, taking into account constraints due to finite measurement resolution. It derives a tight bound on the optimal precision scaling with temperature, as the temperature approaches zero, showing that the variance in any temperature estimate must decrease slower than linearly.

Source: Physical Review Research

DOI: 10.1103/physrevresearch.2.033394

Authors: Mathias R. Jørgensen, Patrick P. Potts, Matteo G. A. Paris, Jonatan B. Brask

Institutions: Technical University of Denmark, Lund University, NanoLund, University of Milan

Language: English

Topic: Quantum Information and Cryptography

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625

Funders: European Commission, Danmarks Frie Forskningsfond, Horizon 2020