The notions of chaos and order are central to understanding the statistical physics of many-body systems. Thermalization and the spread of quantum information in chaotic many-body dynamics is presently attracting a lot of attention across various fields, ranging from statistical physics via cold atom physics to quantum gravity. Starting from the concept of a ”quantum butterfly effect”, this...
Quantum Dynamics in Multiple Quantum Dots Systems
Tatiana Mihaescu^{1}, Aurelian Isar^{1}, and Mihai A. Macovei^{2}
{}^{1} National Institute of Physics and Nuclear Engineering, Reactorului 30, RO-077125, Măgurele-Bucharest, Romania
{}^{2} Institute of Applied Physics, Moldova State University, Chișinău, Moldova
*E-mail: mihai.macovei@ifa.usm.md
Light-matter interactions...
Secure quantum teleportation is essential for reliable transfer of quantum information across distant locations. It paves the way for future quantum networks and quantum communication systems. Consideration of an input squeezed thermal state is more realistic and appropriate for many applications because of losses caused by interaction with environment. The secure teleportation is conditioned...
There is a plethora of mechanisms in quantum optics that allow for the optical control of the atomic decay. In this way, the spontaneous emission responsible for the population decay of the excited atom, can be enhanced or slowed-down. These control mechanisms can be, as well, applied to hybrid optomechanical devices that contain an emitter such as an artificial atom or a molecule. For such...
We investigate the Markovian evolution of Gaussian entanglement and steering in a system consisting
of two strongly coupled harmonic oscillators immersed in a structured environment. Specically, we analyze
the contribution of the interaction between modes when the magnitude of the intermode coupling strength
is comparable to the local frequencies of the modes, and the rotating wave...
Hellinger geometric quantum discord and interferometric power are analyzed for an open system
consisting of two bosonic modes, while interacting with four different environments: vacuum, squeezed
vacuum, thermal and squeezed thermal, taking the initial state of the open system to be either a singlemode
squeezed state, which presents no initial correlations or a squeezed vacuum state. The...
We investigated the separability of a general Werner state in the framework of non-inertial frames
of references. We considered bimodal and trimodal quantum systems described by modes of different
field theories. Our analysis include the study of a free scalar quantum field for describing bosons and
a free Dirac field associated with the description of Fermions. We provided condition of...
In recent years, extensive studies on quantum correlations in various scenarios, such as non-inertial
frames, curved spacetime, and an expanding universe have been performed [1–6]. In the framework
of the theory of open systems based on completely positive quantum dynamical semigroups, we
investigate the time evolution of Gaussian quantum entanglement of two bosonic modes associated
with a...
