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The European Quantum Technologies Roadmap
Antonio Acín, Immanuel Bloch, Harry Buhrman +15
Within the last two decades, Quantum Technologies (QT) have made tremendous progress, moving from Noble Prize award-winning experiments on quantum physics into a cross-disciplinary…
Activation of entanglement from quantum coherence and superposition
Lu-Feng Qiao, Jun Gao, Alexander Streltsov +11
Quantum entanglement and coherence are two fundamental features of nature, arising from the superposition principle of quantum mechanics. While considered as puzzling phenomena in…
Chiral spin currents in a trapped-ion quantum simulator using Floquet engineering
Tobias Grass, Alessio Celi, Guido Pagano +1
The most typical ingredient of topologically protected quantum states are magnetic fluxes. In a system of spins, complex-valued interaction parameters give rise to a flux, if their…
Thermodynamics as a Consequence of Information Conservation
Manabendra Nath Bera, Arnau Riera, Maciej Lewenstein +2
Thermodynamics and information have intricate interrelations. Often thermodynamics is considered to be the logical premise to justify that information is physical - through Landaue…
Separability of diagonal symmetric states: a quadratic conic optimization problem
Jordi Tura, Albert Aloy, Ruben Quesada +2
We study the separability problem in mixtures of Dicke states i.e., the separability of the so-called Diagonal Symmetric (DS) states. First, we show that separability in the case o…
Equilibration time scales in closed many-body quantum systems
Thiago R. de Oliveira, Christos Charalambous, Daniel Jonathan +2
We show that the physical mechanism for the equilibration of closed quantum systems is dephasing, and identify the energy scales that determine the equilibration timescale of a giv…
Objectivity in non-Markovian spin-boson model
Aniello Lampo, Jan Tuziemski, Maciej Lewenstein +1
Objectivity constitutes one of the main features of the macroscopic classical world. An important aspect of the quantum-to-classical transition issue is to explain how such a prope…
The separability versus entanglement problem
Sreetama Das, Titas Chanda, Maciej Lewenstein +3
We present a review of the problem of finding out whether a quantum state of two or more parties is entangled or separable. After a formal definition of entangled states, we presen…