Zobrazeno 11 - 20
of 2 078
pro vyhledávání: '"Fazio R."'
Publikováno v:
Phys. Rev. Lett. 122, 040604 (2019)
We present an analog of the phenomenon of orthogonality catastrophe in quantum many body systems subject to a local dissipative impurity. We show that the fidelity $F(t)$, giving a measure for distance of the time-evolved state from the initial one,
Externí odkaz:
http://arxiv.org/abs/1809.09088
The last century has been characterized by the development of information theory and the consequent transformative impact of new technologies on societies around the world. It seems likely that the tremendous progress in nanoscience – the ability t
Publikováno v:
New J. Phys., 20, 045004 (2018)
Driven-dissipative quantum many-body systems have attracted increasing interest in recent years as they lead to novel classes of quantum many-body phenomena. In particular, mean-field calculations predict limit cycle phases, slow oscillations instead
Externí odkaz:
http://arxiv.org/abs/1711.11309
Publikováno v:
Phys. Rev. Lett. 121, 035301 (2018)
In this work we introduce {\it boundary time-crystals}. Here {\it continuous} time-translation symmetry breaking occurs only in a macroscopic fraction of a many-body quantum system. After introducing their definition and properties, we analyse in det
Externí odkaz:
http://arxiv.org/abs/1708.05014
Publikováno v:
Phys. Rev. A 97, 013634 (2018)
The realization of the Hofstadter model in a strongly anisotropic ladder geometry has now become possible in one-dimensional optical lattices with a synthetic dimension. In this work, we show how the Hofstadter Hamiltonian in such ladder configuratio
Externí odkaz:
http://arxiv.org/abs/1708.02929
We present a quantum heat switch based on coupled superconducting qubits, connected to two $LC$ resonators that are terminated by resistors providing two heat baths. To describe the system we use a standard second order master equation with respect t
Externí odkaz:
http://arxiv.org/abs/1703.10499
Publikováno v:
Phys. Rev. Lett. 118, 200404 (2017)
We show how angular momentum conservation can stabilise a symmetry-protected quasi-topological phase of matter supporting Majorana quasi-particles as edge modes in one-dimensional cold atom gases. We investigate a number-conserving four-species Hubba
Externí odkaz:
http://arxiv.org/abs/1702.04733
Publikováno v:
Phys. Rev. B 95, 134431 (2017)
We explore critical properties of two-dimensional lattices of spins interacting via an anisotropic Heisenberg Hamiltonian and subject to incoherent spin flips. We determine the steady-state solution of the master equation for the density matrix via t
Externí odkaz:
http://arxiv.org/abs/1609.02848
Publikováno v:
Phys. Rev. A 92, 041805 (2015)
We introduce a simple method to realize and detect photonic topological Chern insulators with one-dimensional circiut quantum electrodynamics arrays. By periodically modulating the couplings of the array, we show that this one-dimensional model can b
Externí odkaz:
http://arxiv.org/abs/1504.05686
Publikováno v:
Nat. Commun. 6, 8134 (2015)
The joint action of a synthetic gauge potential and of atomic contact repulsion in a one-dimensional alkaline-earth(-like) fermionic gas with nuclear spin I leads to the existence of a hierarchy of fractional insulating and conducting states with int
Externí odkaz:
http://arxiv.org/abs/1504.00164