Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Moreira, Saulo V."'
We investigate non-equilibrium transport of charge and heat through an interacting quantum dot coupled to a finite electron reservoir. Both the quantum dot and the finite reservoir are coupled to conventional electric contacts, i.e., infinite electro
Externí odkaz:
http://arxiv.org/abs/2407.07727
In slowly driven classical systems, work is a stochastic quantity and its probability distribution is known to satisfy the work fluctuation-dissipation relation, which states that the mean and variance of the dissipated work are linearly related. Rec
Externí odkaz:
http://arxiv.org/abs/2405.17121
Publikováno v:
Phys. Rev. Lett. 131, 220405 (2023)
In nano-scale systems coupled to finite-size reservoirs, the reservoir temperature may fluctuate due to heat exchange between the system and the reservoirs. To date, a stochastic thermodynamic analysis of heat, work and entropy production in such sys
Externí odkaz:
http://arxiv.org/abs/2307.06679
Publikováno v:
Entropy 23, 1179 (2021)
The investigation of the phenomenon of dephasing assisted quantum transport, which happens when the presence of dephasing benefits the efficiency of this process, has been mainly focused on Markovian scenarios associated with constant and positive de
Externí odkaz:
http://arxiv.org/abs/2102.10466
Publikováno v:
Phys. Rev. E 101, 052107 (2020)
We study the influence that collective transition phenomena have on quantum metrological protocols. The single spherical quantum spin (SQS) serves as stereotypical toy model that allows analytical insights on a mean-field level. First, we focus on eq
Externí odkaz:
http://arxiv.org/abs/2001.03189
Autor:
Moreira, Saulo V., Marques, Breno, Paiva, Rafael R., Cruz, Luciano S., Soares-Pinto, Diogo O., Semião, Fernando L.
Publikováno v:
Phys. Rev. A 101, 012123 (2020)
We consider the problem of energy transport in a chain of coupled dissipative quantum systems in the presence of non-Markovian dephasing. We use a model of non-Markovianity which is experimentally realizable in the context of controlled quantum syste
Externí odkaz:
http://arxiv.org/abs/1905.05784
Autor:
Moreira, Saulo V., Semião, Fernando L.
Publikováno v:
Quantum Sci. Technol. 4, 03LT01 (2019)
In this work, we establish a connection between nonlinear electronic spectroscopy and the protocol for the non-disturbance condition, the non-fullfilment of which is a witness of nonclassicality and can be related to the presence of coherence. Our ap
Externí odkaz:
http://arxiv.org/abs/1808.04427
Publikováno v:
Phys. Rev. A 99, 022124 (2019)
We propose a resource theory of the quantum invasiveness of general quantum operations, i.e., those defined by quantum channels in Leggett-Garg scenarios. We are then able to compare the resource-theoretic framework of quantum invasiveness to the res
Externí odkaz:
http://arxiv.org/abs/1803.02836
Autor:
Moreira, Saulo V., Adesso, Gerardo, Correa, Luis A., Coudreau, Thomas, Keller, Arne, Milman, Perola
Publikováno v:
Phys. Rev. A 96, 012110 (2017)
The connection between the Leggett-Garg inequality and optimal scenarios from the point of view of quantum metrology is investigated for perfect and noisy general dichotomic measurements. In this context, we show that the Fisher information can be ex
Externí odkaz:
http://arxiv.org/abs/1704.04787
Publikováno v:
Phys. Rev. A 92, 062132 (2015)
The Leggett-Garg inequality is a widely used test of the "quantumness" of a system, and involves correlations between measurements realized at different times. According to its widespread interpretation, a violation of the Legget-Garg inequality disp
Externí odkaz:
http://arxiv.org/abs/1506.04993