Probe thermometry with continuous measurements
Boeyens, Julia ; Annby-Andersson, Björn LU ; Bakhshinezhad, Pharnam LU ; Haack, Géraldine ; Perarnau-Llobet, Martí ; Nimmrichter, Stefan ; Potts, Patrick P. LU
and Mehboudi, Mohammad
(2023)
In New Journal of Physics
25(12).
- Abstract
Temperature estimation plays a vital role across natural sciences. A standard approach is provided by probe thermometry, where a probe is brought into contact with the sample and examined after a certain amount of time has passed. In situations where, for example, preparation of the probe is non-trivial or total measurement time of the experiment is the main resource that must be optimized, continuously monitoring the probe may be preferred. Here, we consider a minimal model, where the probe is provided by a two-level system coupled to a thermal reservoir. Monitoring thermally activated transitions enables real-time estimation of temperature with increasing accuracy over time. Within this framework we comprehensively investigate... (More)
Temperature estimation plays a vital role across natural sciences. A standard approach is provided by probe thermometry, where a probe is brought into contact with the sample and examined after a certain amount of time has passed. In situations where, for example, preparation of the probe is non-trivial or total measurement time of the experiment is the main resource that must be optimized, continuously monitoring the probe may be preferred. Here, we consider a minimal model, where the probe is provided by a two-level system coupled to a thermal reservoir. Monitoring thermally activated transitions enables real-time estimation of temperature with increasing accuracy over time. Within this framework we comprehensively investigate thermometry in both bosonic and fermionic environments employing a Bayesian approach. Furthermore, we explore adaptive strategies and find a significant improvement on the precision. Additionally, we examine the impact of noise and find that adaptive strategies may suffer more than non-adaptive ones for short observation times. While our main focus is on thermometry, our results are easily extended to the estimation of other environmental parameters, such as chemical potentials and transition rates.
(Less)
- author
- Boeyens, Julia
; Annby-Andersson, Björn
LU
; Bakhshinezhad, Pharnam
LU
; Haack, Géraldine
; Perarnau-Llobet, Martí
; Nimmrichter, Stefan
; Potts, Patrick P.
LU
and Mehboudi, Mohammad
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Bayesian inference, continuous measurements, Fisher information, noisy measurements, quantum thermometry
- in
- New Journal of Physics
- volume
- 25
- issue
- 12
- article number
- 123009
- publisher
- IOP Publishing
- external identifiers
-
- scopus:85180005074
- ISSN
- 1367-2630
- DOI
- 10.1088/1367-2630/ad0e8a
- language
- English
- LU publication?
- yes
- id
- 5c6826da-259c-4451-943b-9aef56ee2e75
- date added to LUP
- 2024-01-10 16:20:14
- date last changed
- 2024-03-05 15:21:22
@article{5c6826da-259c-4451-943b-9aef56ee2e75,
abstract = {{<p>Temperature estimation plays a vital role across natural sciences. A standard approach is provided by probe thermometry, where a probe is brought into contact with the sample and examined after a certain amount of time has passed. In situations where, for example, preparation of the probe is non-trivial or total measurement time of the experiment is the main resource that must be optimized, continuously monitoring the probe may be preferred. Here, we consider a minimal model, where the probe is provided by a two-level system coupled to a thermal reservoir. Monitoring thermally activated transitions enables real-time estimation of temperature with increasing accuracy over time. Within this framework we comprehensively investigate thermometry in both bosonic and fermionic environments employing a Bayesian approach. Furthermore, we explore adaptive strategies and find a significant improvement on the precision. Additionally, we examine the impact of noise and find that adaptive strategies may suffer more than non-adaptive ones for short observation times. While our main focus is on thermometry, our results are easily extended to the estimation of other environmental parameters, such as chemical potentials and transition rates.</p>}},
author = {{Boeyens, Julia and Annby-Andersson, Björn and Bakhshinezhad, Pharnam and Haack, Géraldine and Perarnau-Llobet, Martí and Nimmrichter, Stefan and Potts, Patrick P. and Mehboudi, Mohammad}},
issn = {{1367-2630}},
keywords = {{Bayesian inference; continuous measurements; Fisher information; noisy measurements; quantum thermometry}},
language = {{eng}},
number = {{12}},
publisher = {{IOP Publishing}},
series = {{New Journal of Physics}},
title = {{Probe thermometry with continuous measurements}},
url = {{http://dx.doi.org/10.1088/1367-2630/ad0e8a}},
doi = {{10.1088/1367-2630/ad0e8a}},
volume = {{25}},
year = {{2023}},
}