18 citations · 88 across the 12 of their papers we have counts for
12 papers
Quantum Brownian motion in a temperature gradient
Ricardo J. S. Afonso, Pedro V. Paraguassú, Thiago Werlang +1
When a classical Brownian particle is subjected to a temperature gradient it can undergo thermophoresis, i.e., the particle gets transported towards the colder regions of the envir…
Thermoforesis from generalized Caldeira-Leggett models
Daniel Valente, Maurício Matos, Thiago Werlang
The standard Caldeira-Leggett model addresses the problem of Brownian motion in a thermal equilibrium environment. Here, we look for generalizations of the Caldeira-Leggett model t…
Dissipative adaptation in a driven spin-boson model within the path-integral formalism
Elisa Iahn Goettems, Ricardo J. S. Afonso, Diogo O. Soares-Pinto +1
We investigate the dissipative adaptation hypothesis in a quantum regime using a system-reservoir approach. This hypothesis proposes that self-organization arises from a system's a…
Energetics of self-organization in a dissipative two-site quantum system driven by single-photon pulses
Thiago Ganascini, Wendel Lopes da Silva, Daniel Valente
Finding principles of nonequilibrium self-organization in dissipative quantum systems is an open problem. One example is the notion of quantum dissipative adaptation (QDA), that re…
Quantum thermophoresis
Maurício Matos, Thiago Werlang, Daniel Valente
Thermophoresis is the migration of a particle due to a thermal gradient. Here, we theoretically uncover the quantum version of thermophoresis. As a proof of principle, we analytica…
Exact solution of a lambda quantum system driven by a two-photon wavepacket
Wendel Lopes da Silva, Daniel Valente
Three-level atoms in lambda configuration find diverse applications in quantum information processing, and a promising way to manipulate their quantum states is with single-photon…
Quantum dissipative adaptation with cascaded photons
Thiago Ganascini, Thiago Werlang, Daniel Valente
Classical dissipative adaptation is a hypothetical non-equilibrium thermodynamic principle of self-organization in driven matter, relating transition probabilities with the non-equ…
Mach-Zehnder interferometer with quantum beamsplitters
Nelson Almeida, Thiago Werlang, Daniel Valente
A one-dimensional waveguide enables a single two-level emitter to route the propagation of a single photon, as to provide a quantum mirror or a quantum beamsplitter. Here we presen…
Quantum power boost in a nonstationary cavity-QED quantum heat engine
A. V. Dodonov, D. Valente, T. Werlang
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 achie…
Quantum work by a single photon
D. Valente, F. Brito, R. Ferreira +1
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 avera…
The most elementary heat to work conversion: work extraction from a completely passive state by a single photon
Daniel Valente, Frederico Brito, Thiago Werlang
The concepts of work and heat in the quantum domain, as well as their interconversion principles, are still an open debate. We have found theoretical evidence that a single photon…
Monitoring stimulated emission at the single photon level in one-dimensional atoms
D. Valente, S. Portolan, G. Nogues +5
We theoretically investigate signatures of stimulated emission at the single photon level for a two-level atom interacting with a one-dimensional light field. We consider the trans…