Zobrazeno 1 - 10
of 218
pro vyhledávání: '"Valente, D. A."'
Autor:
Pais-Cunha, I., Valente, D., Abreu, D.B., Fonseca, J., Melo, C., Sampaio, M., Santos, L.A., Sousa, R.
Publikováno v:
In Neurología June 2024 39(5):426-431
Publikováno v:
J. Phys. A: Math. Theor. 51, 365302 (2018)
We show a quantum boost in the output power of a heat engine formed by a two-level system coupled to a single-mode cavity. The key ingredient here is the nonstationary regime achieved when some system parameter (atomic transition frequency, in our ca
Externí odkaz:
http://arxiv.org/abs/1803.08402
Publikováno v:
Optics Letters Vol. 43, Issue 11, pp. 2644-2647 (2018)
The work performed by a classical electromagnetic field on a quantum dipole is well known in quantum optics. The absorbed power linearly depends on the time derivative of the average dipole moment, in that case. The following problem, however, still
Externí odkaz:
http://arxiv.org/abs/1709.09677
Publikováno v:
Optics Letters, v.42, n.9, p.1692-1695, (2017)
The dynamic Stark shift results from the interaction of an atom with the electromagnetic field. We show how a propagating single-photon wave packet can induce a time-dependent dynamical Stark shift on a two-level system (TLS). A non-perturbative full
Externí odkaz:
http://arxiv.org/abs/1704.06483
Publikováno v:
Phys. Rev. A 96, 012501 (2017)
We consider the quantum Rabi model with external time modulation of the atomic frequency, which can be employed to create excitations from the vacuum state of the electromagnetic field as a consequence of the dynamical Casimir effect. Excitations can
Externí odkaz:
http://arxiv.org/abs/1704.04763
We use immobility as an origin and reference for the measurement of locomotor behavior; speed, the direction of walking and the direction of facing as the three degrees of freedom shaping fly locomotor behavior, and cocaine as the parameter inducing
Externí odkaz:
http://arxiv.org/abs/1507.07270
Publikováno v:
Optics Letters 41, 3126 (2016)
The concept of non-Markovianity (NM) in quantum dynamics is still an open debate. Understanding how to generate and measure NM in specific models may aid in this quest. In quantum optics, an engineered electromagnetic environment coupled to a single
Externí odkaz:
http://arxiv.org/abs/1505.05542
Autor:
Fratini, F., Mascarenhas, E., Safari, L., Poizat, J-Ph., Valente, D., Auffèves, A., Gerace, D., Santos, M. F.
Publikováno v:
Phys. Rev. Lett. 113, 243601 (2014)
Optical transport represents a natural route towards fast communications, and it is currently used in large scale data transfer. The progressive miniaturization of devices for information processing calls for the microscopic tailoring of light transp
Externí odkaz:
http://arxiv.org/abs/1410.5972
Autor:
Werlang, T., Valente, D.
Publikováno v:
Phys. Rev. E 91, 012143 (2015)
A pure-dephasing reservoir acting on an individual quantum system induces loss of coherence without energy exchange. When acting on composite quantum systems, dephasing reservoirs can lead to a radically different behavior. Transport of energy betwee
Externí odkaz:
http://arxiv.org/abs/1408.5171
Publikováno v:
Phys Rev E 89, 062109 (2014)
We study heat transport in a pair of strongly coupled spins. In particular, we present a condition for optimal rectification, i.e., flow of heat in one direction and complete isolation in the opposite direction. We show that the strong-coupling forma
Externí odkaz:
http://arxiv.org/abs/1404.0348