Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Seah, Stella"'
Autor:
Khandelwal, Shishir, Perarnau-Llobet, Martí, Seah, Stella, Brunner, Nicolas, Haack, Géraldine
Publikováno v:
Phys. Rev. Research 5, 013129 (2023)
A physical system connected to two thermal reservoirs at different temperatures is said to act as a heat rectifier when it is able to bias the heat current in a given direction, similarly to an electronic diode. We propose to quantify the performance
Externí odkaz:
http://arxiv.org/abs/2208.10809
We study the Bayesian approach to thermometry with no prior knowledge about the expected temperature scale, through the example of energy measurements on fully or partially thermalized qubit probes. We show that the most common Bayesian estimators, n
Externí odkaz:
http://arxiv.org/abs/2108.07025
Autor:
Mehboudi, Mohammad, Jørgensen, Mathias R., Seah, Stella, Brask, Jonatan B., Kołodyński, Jan, Perarnau-Llobet, Martí
Publikováno v:
Phys. Rev. Lett. 128, 130502 (2022)
We investigate the limits of thermometry using quantum probes at thermal equilibrium within the Bayesian approach. We consider the possibility of engineering interactions between the probes in order to enhance their sensitivity, as well as feedback d
Externí odkaz:
http://arxiv.org/abs/2108.05932
Autor:
Seah, Stella, Perarnau-Llobet, Martí, Haack, Géraldine, Brunner, Nicolas, Nimmrichter, Stefan
Publikováno v:
Phys. Rev. Lett. 127, 100601 (2021)
We present a collision model for the charging of a quantum battery by identical nonequilibrium qubit units. When the units are prepared in a mixture of energy eigenstates, the energy gain in the battery can be described by a classical random walk, wh
Externí odkaz:
http://arxiv.org/abs/2105.01863
Publikováno v:
Phys. Rev. A 102, 042417 (2020)
In collisional thermometry, a system in contact with the thermal bath is probed by a stream of ancillas. Coherences and collective measurements were shown to improve the Fisher information in some parameter regimes, for a stream of independent and id
Externí odkaz:
http://arxiv.org/abs/2008.09319
Publikováno v:
Phys. Rev. Lett. 124, 100603 (2020)
We discuss a self-contained spin-boson model for a measurement-driven engine, in which a demon generates work from thermal excitations of a quantum spin via measurement and feedback control. Instead of granting it full direct access to the spin state
Externí odkaz:
http://arxiv.org/abs/1908.10102
Autor:
Seah, Stella, Nimmrichter, Stefan, Grimmer, Daniel, Santos, Jader P., Scarani, Valerio, Landi, Gabriel T.
Publikováno v:
Phys. Rev. Lett. 123, 180602 (2019)
We introduce a general framework for thermometry based on collisional models, where ancillas probe the temperature of the environment through an intermediary system. This allows for the generation of correlated ancillas even if they are initially ind
Externí odkaz:
http://arxiv.org/abs/1904.12551
Publikováno v:
Phys. Rev. A 100, 042107 (2019)
The resource theory of thermal operations explains the state transformations that are possible in a very specific thermodynamic setting: there is only one thermal bath, auxiliary systems can only be in corresponding thermal state (free states), and t
Externí odkaz:
http://arxiv.org/abs/1904.08736
Publikováno v:
Phys. Rev. E 99, 042103 (2019)
We study quantum dynamics in the framework of repeated interactions between a system and a stream of identical probes. We present a coarse-grained master equation that captures the system's dynamics in the natural regime where interactions with diffe
Externí odkaz:
http://arxiv.org/abs/1809.04781
In the resource theory of thermodynamics, the decrease of the free energy based on von Neumann entropy is not a sufficient condition to determine free evolution. Rather, a whole family of generalised free energies $F_{\alpha}$ must be monotonically d
Externí odkaz:
http://arxiv.org/abs/1806.08108