Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Usui, Ayaka"'
Synthetic spin-orbit coupling in cold atoms couples the pseudo-spin and spatial degrees of freedom, and therefore the inherent spin symmetry of the system plays an important role. In systems of two pseudo-spin degrees, two particles contain symmetric
Externí odkaz:
http://arxiv.org/abs/2403.07188
Publikováno v:
Phys. Rev. Research 6, 023243 (2024)
Local Hamiltonians, $H_k$, describe non-trivial $k$-body interactions in quantum many-body systems. Here, we address the dynamical simulatability of a $k$-local Hamiltonian by a simpler one, $H_{k'}$, with $k'
Externí odkaz:
http://arxiv.org/abs/2310.07054
Publikováno v:
New J. Phys. 26 023049 (2024)
Based on exact integration of the Schr\"odinger equation, we numerically study microscopic contributions to the entropy production for the single electron transistor, a paradigmatic model describing a single Fermi level tunnel coupled to two baths of
Externí odkaz:
http://arxiv.org/abs/2309.11812
Publikováno v:
Phys. Rev. Lett. 127, 010401 (2021)
Entanglement measures quantify nonclassical correlations present in a quantum system, but can be extremely difficult to calculate, even more so, when information on its state is limited. Here, we consider broad families of entanglement criteria that
Externí odkaz:
http://arxiv.org/abs/2103.15730
Publikováno v:
Phys. Rev. A 104, 042224 (2021)
Quantum thermodynamics often deals with the dynamics of small quantum machines interfacing with a large and complex environment. Virtual qubits, collisional models and reset master equations have become highly useful tools for predicting the qualitat
Externí odkaz:
http://arxiv.org/abs/2009.03832
Publikováno v:
Quantum Sci. Technol. 6, 025018 (2021)
Bayesian analysis is a framework for parameter estimation that applies even in uncertainty regimes where the commonly used local (frequentist) analysis based on the Cram\'er-Rao bound is not well defined. In particular, it applies when no initial inf
Externí odkaz:
http://arxiv.org/abs/2009.03709
Publikováno v:
Phys. Rev. Lett. 126, 160402 (2021)
We develop a framework and give an example for situations where two distinct Hamiltonians living in the same Hilbert space can be used to simulate the same physics. As an example of an analog simulation, we first discuss how one can simulate an infin
Externí odkaz:
http://arxiv.org/abs/2007.06740
Publikováno v:
New J. Phys. 22 013050 (2020)
We explore the influence of contact interactions on a synthetically spin-orbit coupled system of two ultracold trapped atoms. Even though the system we consider is bosonic, we show that a regime exists in which the competition between the contact and
Externí odkaz:
http://arxiv.org/abs/1910.02399
Publikováno v:
New J. Phys. 20, 103006 (2018)
We study a two-level impurity coupled locally to a quantum gas on an optical lattice. For state-dependent interactions between the impurity and the gas, we show that its evolution encodes information on the local excitation spectrum of gas at the cou
Externí odkaz:
http://arxiv.org/abs/1804.09237
Publikováno v:
New J. Phys. 19 113018 (2017)
We investigate the dynamics of the rate function and of local observables after a quench in models which exhibit phase transitions between a superfluid and an insulator in their ground states. Zeros of the return probability, corresponding to singula
Externí odkaz:
http://arxiv.org/abs/1704.07659