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of 22
pro vyhledávání: '"Vieira, Carlos H. S."'
Gaussian quantum channels are relevant operations in continuous variable systems. In general, given an arbitrary state, the action on it is well-known provided that the quantum channels are completely characterized. In this work, we consider the inve
Externí odkaz:
http://arxiv.org/abs/2409.09675
Autor:
Porto, João C. P., Marinho, Lucas S., Dieguez, Pedro R., da Paz, Irismar G., Vieira, Carlos H. S.
Quantum metrology offers significant improvements in several quantum technologies. In this work, we propose a Gaussian quantum metrology protocol assisted by initial position-momentum correlations (PM). We employ a correlated Gaussian wave packet as
Externí odkaz:
http://arxiv.org/abs/2408.13060
Autor:
da Silva, Pedro P., Vieira, Carlos H. S., Santos, Jonas F. G., Marinho, Lucas S., Sampaio, Marcos, da Paz, Irismar G.
We explore the effects of Markovian bath coupling and initial position-momentum correlations on the coherence and purity of Gaussian quantum states. Our analysis focuses on the roles these factors play in the dynamics of quantum coherence, coherence
Externí odkaz:
http://arxiv.org/abs/2404.15473
Quantum thermal machines are powerful platforms to investigate how quantum effects impact the energy flow between different systems. We here investigate a two-stroke cycle in which spin squeezing effects are intrinsically switched on during all the o
Externí odkaz:
http://arxiv.org/abs/2402.00852
The Gouy phase is essential for accurately describing various wave phenomena, ranging from classical electromagnetic waves to matter waves and quantum optics. In this work, we employ phase-space methods based on the cross-Wigner transformation to ana
Externí odkaz:
http://arxiv.org/abs/2401.00083
Autor:
Vieira, Carlos H. S., de Oliveira, Jefferson L. D., Santos, Jonas F. G., Dieguez, Pedro R., Serra, Roberto M.
Publikováno v:
J. Magn. Reson. Open 16-17, 100105 (2023)
Quantum thermodynamics seeks to extend non-equilibrium stochastic thermodynamics to small quantum systems where non-classical features are essential to its description. Such a research area has recently provided meaningful theoretical and experimenta
Externí odkaz:
http://arxiv.org/abs/2303.08917
We study the effect of the intermode coupling in the generation of coherence when two bosonic modes are bilinearly coupled. We consider the case for which the two modes are weakly coupled and the rotating-wave approximation (RWA) applies and the case
Externí odkaz:
http://arxiv.org/abs/2208.10649
Using Bell-inequalities as a tool to explore non-classical physical behaviours, in this paper we analyze what one can expect to find in many-body quantum physics. Concretely, framing the usual correlation scenarios as a concrete spin-lattice, we want
Externí odkaz:
http://arxiv.org/abs/2006.05537
Publikováno v:
Physica A 125937 (2021)
Quantum information is a common topic of research in many areas of quantum physics, such as quantum communication and quantum computation, as well as quantum thermodynamics. It can be encoded in discrete or continuous variable systems, with the appro
Externí odkaz:
http://arxiv.org/abs/1911.04242
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