Zobrazeno 1 - 10
of 389
pro vyhledávání: '"Eckardt André"'
Quantum many-body scars are energy eigenstates which fail to reproduce thermal expectation values of local observables in systems, where the rest of the many-body spectrum fulfils eigenstate thermalization. Experimental observation of quantum many-bo
Externí odkaz:
http://arxiv.org/abs/2410.14613
A mathematical description of the reduced dynamics of an open quantum system can often be given in terms of a completely positive and trace preserving (CPTP) map, also known as quantum channel. In a seminal work by Wolf et al. [Phys. Rev. Lett. 101,
Externí odkaz:
http://arxiv.org/abs/2409.17072
Autor:
Tesfaye, Isaac, Eckardt, André
Topological and geometrical features arising in bosonic Bogoliubov-de Gennes (BdG) systems have mainly been studied by utilizing a generalized symplectic version of the Berry curvature and related Chern numbers. Here, we propose a symplectic quantum
Externí odkaz:
http://arxiv.org/abs/2406.12981
Autor:
Becker, Tobias, Eckardt, André
Time-local quantum master equations that describe open quantum systems beyond the limit of ultraweak system-bath coupling are often not of Gorini-Kossakowski-Sudarshan-Lindblad (GKSL) form. Prominent examples are the Redfield equation approximating g
Externí odkaz:
http://arxiv.org/abs/2312.15066
Autor:
Shimasaki, Toshihiko, Bai, Yifei, Kondakci, H. Esat, Dotti, Peter, Pagett, Jared E., Dardia, Anna R., Prichard, Max, Eckardt, André, Weld, David M.
Periodic driving can tune the quasistatic properties of quantum matter. A well-known example is the dynamical modification of tunneling by an oscillating electric field. Here we show experimentally that driving the phasonic degree of freedom of a col
Externí odkaz:
http://arxiv.org/abs/2312.00976
Autor:
Petiziol, Francesco, Eckardt, André
Publikováno v:
Phys. Rev. A 110, L021701 (2024)
Out of thermal equilibrium, bosonic quantum systems can Bose-condense away from the ground state, featuring a macroscopic occupation of an excited state or even of multiple states in the so-called Bose-selection scenario. In previous work, a theory w
Externí odkaz:
http://arxiv.org/abs/2311.02170
Publikováno v:
SciPost Phys. 16, 086 (2024)
Anyons obeying fractional exchange statistics arise naturally in two dimensions: hard-core two-body constraints make the configuration space of particles not simply-connected. The braid group describes how topologically-inequivalent exchange paths ca
Externí odkaz:
http://arxiv.org/abs/2309.04358
Publikováno v:
Phys. Rev. E 109, 064121 (2024)
We propose a minimal setup for a quantum heat pump, consisting of two tunnel-coupled quantum dots, each hosting a single level and each being coupled to a different fermionic reservoir. The working principle relies on both non-Markovian system-bath c
Externí odkaz:
http://arxiv.org/abs/2307.14892
Publikováno v:
SciPost Phys. 17, 052 (2024)
Floquet engineering is an important tool for realizing topologically nontrivial band structures for charge-neutral atoms in optical lattices. However, the preparation of a topological-band-insulator-type state of fermions, with one nontrivial quasi-e
Externí odkaz:
http://arxiv.org/abs/2307.03739
Optical box traps for cold atoms offer new possibilities for quantum-gas experiments. Building on their exquisite spatial and temporal control, we propose to engineer system-reservoir configurations using box traps, in view of preparing and manipulat
Externí odkaz:
http://arxiv.org/abs/2306.15610