Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Gabriel T. Landi"'
Publikováno v:
PRX Quantum, Vol 5, Iss 3, p 030355 (2024)
We extend entropy production to a deeply quantum regime involving noncommuting conserved quantities. Consider a unitary transporting conserved quantities (“charges”) between two systems initialized in thermal states. Three common formulas model t
Externí odkaz:
https://doaj.org/article/492f0e9384834d409bbcdc58c1a41759
Publikováno v:
New Journal of Physics, Vol 26, Iss 3, p 033048 (2024)
We consider the impact that temporal correlations in the measurement statistics can have on the achievable precision in a sequential metrological protocol. In this setting, and for a single quantum probe, we establish that it is the transitions betwe
Externí odkaz:
https://doaj.org/article/e42a1158d2f741a4b8efffe4445e36a8
Publikováno v:
Physical Review Research, Vol 5, Iss 2, p L022010 (2023)
The statistics of work done on a quantum system can be quantified by the two-point measurement scheme. We show how the Shannon entropy of the work distribution admits a general upper bound depending on the initial diagonal entropy, and a purely quant
Externí odkaz:
https://doaj.org/article/77342b2448d54981b4db98a6cde980c1
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043160 (2023)
We show that the energy statistics resulting from a two-point measurement of an isolated quantum system subject to a time-dependent driving protocol can be probed by subjecting the same system to a collision with a suitably prepared incoming particle
Externí odkaz:
https://doaj.org/article/da3388a172af46dfbf362f56f29a185c
Publikováno v:
Physical Review Research, Vol 5, Iss 3, p 033150 (2023)
We study the problem of parameter estimation in time series stemming from general stochastic processes, where the outcomes may exhibit arbitrary temporal correlations. In particular, we address the question of how much Fisher information is lost if t
Externí odkaz:
https://doaj.org/article/b1b4c5fc6f3c4886957ec2795f0b63ac
Autor:
Kacper Prech, Philip Johansson, Elias Nyholm, Gabriel T. Landi, Claudio Verdozzi, Peter Samuelsson, Patrick P. Potts
Publikováno v:
Physical Review Research, Vol 5, Iss 2, p 023155 (2023)
A deeper understanding of the differences between quantum and classical dynamics promises great potential for emerging technologies. Nevertheless, some aspects remain poorly understood, particularly concerning the role of quantum coherence in open qu
Externí odkaz:
https://doaj.org/article/cc869b2b42aa4d7a813e5bd15df2a052
Publikováno v:
New Journal of Physics, Vol 25, Iss 5, p 053037 (2023)
Many real-world tasks include some kind of parameter estimation, i.e. the determination of a parameter encoded in a probability distribution. Often, such probability distributions arise from stochastic processes. For a stationary stochastic process w
Externí odkaz:
https://doaj.org/article/a1ad3981df7e4ff19de4d25bf619fb4b
Autor:
Kaonan Micadei, John P. S. Peterson, Alexandre M. Souza, Roberto S. Sarthour, Ivan S. Oliveira, Gabriel T. Landi, Tiago B. Batalhão, Roberto M. Serra, Eric Lutz
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019)
The presence of correlations can strongly affect the evolution of a quantum system. Here, the authors directly observe differences in the dynamics of two spins-1/2 systems in an NMR setup depending on the correlations of the initial state, including
Externí odkaz:
https://doaj.org/article/f281c915d5ad4c05979c9dda888f3f71
Publikováno v:
PRX Quantum, Vol 3, Iss 1, p 010304 (2022)
Modern quantum experiments provide examples of transport with noncommuting quantities, offering a tool to understand the interplay between thermal and quantum effects. Here we set forth a theory for non-Abelian transport in the linear response regime
Externí odkaz:
https://doaj.org/article/517237cfc1374640a2a32636f71d56d1
Publikováno v:
PRX Quantum, Vol 3, Iss 1, p 010303 (2022)
We put forth a unifying formalism for the description of the thermodynamics of continuously monitored systems, where measurements are only performed on the environment connected to a system. We show, in particular, that the conditional and unconditio
Externí odkaz:
https://doaj.org/article/47d3fd386bc54a3c8243eebabb4ba076