Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Camati, Patrice A."'
Optical Bloch Equations (OBE) model the dynamics of a classically driven two-level atom coupled to a thermal electromagnetic field. From a global viewpoint, they derive from the unitary evolution of a closed, isolated atom-field system. We study the
Externí odkaz:
http://arxiv.org/abs/2404.09648
Autor:
Fellous-Asiani, Marco, Mothe, Raphaël, Bresque, Léa, Dourdent, Hippolyte, Camati, Patrice A., Abbott, Alastair A., Auffèves, Alexia, Branciard, Cyril
Publikováno v:
Phys. Rev. Research 5, 023111 (2023)
Quantum mechanics allows processes to be superposed, leading to a genuinely quantum lack of causal structure. For example, the process known as the quantum switch applies two operations ${\cal A}$ and ${\cal B}$ in a superposition of the two possible
Externí odkaz:
http://arxiv.org/abs/2208.01952
Obtaining the total wavefunction evolution of interacting quantum systems provides access to important properties, such as entanglement, shedding light on fundamental aspects, e.g. quantum energetics and thermodynamics, and guiding towards possible a
Externí odkaz:
http://arxiv.org/abs/2112.09672
Publikováno v:
Phys. Rev. Research 3, 032073 (2021)
We analyze energy exchanges between a qubit and a resonant field propagating in a waveguide. The joint dynamics is analytically solved within a repeated interaction model. The work received by the qubit is defined as the unitary component of the fiel
Externí odkaz:
http://arxiv.org/abs/2102.05941
We theoretically derive and experimentally compare several different ways to access entropy production in a quantum process under feedback control. We focus on a bipartite quantum system realizing an autonomous Maxwell's demon scheme reported by Naje
Externí odkaz:
http://arxiv.org/abs/2012.13640
Autor:
Bresque, Léa, Camati, Patrice A., Rogers, Spencer, Murch, Kater, Jordan, Andrew N., Auffèves, Alexia
Publikováno v:
Phys. Rev. Lett. 126, 120605 (2021)
We introduce a two-qubit engine that is powered by entangling operations and projective local quantum measurements. Energy is extracted from the detuned qubits coherently exchanging a single excitation. This engine, which uses the information and bac
Externí odkaz:
http://arxiv.org/abs/2007.03239
Publikováno v:
Phys. Rev. A 102, 012217 (2020)
The extension of quantum thermodynamics to situations that go beyond standard thermodynamic settings comprises an important and interesting aspect of its development. One such situation is the analysis of the thermodynamic consequences of structured
Externí odkaz:
http://arxiv.org/abs/2002.02039
Autor:
Najera-Santos, Baldo-Luis, Camati, Patrice A., Métillon, Valentin, Brune, Michel, Raimond, Jean-Michel, Auffèves, Alexia, Dotsenko, Igor
Publikováno v:
Phys. Rev. Research 2, 032025 (2020)
We present an autonomous Maxwell's demon scheme. It is first analysed theoretically in term of information exchange in a closed system and then implemented experimentally with a single Rydberg atom and a high-quality microwave resonator. The atom sim
Externí odkaz:
http://arxiv.org/abs/2001.07445
Publikováno v:
Phys. Rev. A 99, 062103 (2019)
The working substance fueling a quantum heat engine may contain coherence in its energy basis, depending on the dynamics of the engine cycle. In some models of quantum Otto heat engines, energy coherence has been associated with entropy production an
Externí odkaz:
http://arxiv.org/abs/1812.08728
Autor:
Camati, Patrice A., Serra, Roberto M.
Publikováno v:
Phys. Rev. A 97, 042127 (2018)
Discrete quantum feedback control consists of a managed dynamics according to the information acquired by a previous measurement. Energy fluctuations along such dynamics satisfy generalized fluctuation relations, which are useful tools to study the t
Externí odkaz:
http://arxiv.org/abs/1802.07703