Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Hui, Hoi-Yin"'
Publikováno v:
Phys. Rev. A 100, 053614 (2019)
Quantum spin liquids (QSLs) define an exotic class of quantum ground states where spins are disordered down to zero temperature. We propose routes to QSLs in kagome optical lattices using applied flux. An optical flux lattice can be applied to induce
Externí odkaz:
http://arxiv.org/abs/1902.11301
Publikováno v:
Phys. Rev. A 98, 023609 (2018)
Synthetic fields applied to ultracold quantum gases can realize topological phases that transcend conventional Bose and Fermi-liquid paradigms. Raman laser beams in particular are under scrutiny as a route to create synthetic fields in neutral gases
Externí odkaz:
http://arxiv.org/abs/1712.10238
Quantum anomalous Hall state from spatially decaying interactions on the decorated honeycomb lattice
Publikováno v:
Phys. Rev. B 97, 035114 (2018)
Topological phases typically encode topology at the level of the single particle band structure. But a remarkable class of models shows that quantum anomalous Hall effects can be driven exclusively by interactions, while the parent non-interacting ba
Externí odkaz:
http://arxiv.org/abs/1705.05829
Autor:
Hui, Hoi-Yin, Sau, Jay D.
Publikováno v:
Phys. Rev. B 95, 014505 (2017)
Time-reversal invariance places strong constraints on the properties of the quantum spin Hall edge. One such restriction is the inevitability of dissipation in a Josephson junction between two superconductors formed on such an edge without the presen
Externí odkaz:
http://arxiv.org/abs/1609.02909
Publikováno v:
Phys. Rev. A 95, 033603 (2017)
At low temperatures bosons typically condense to minimize their single-particle kinetic energy while interactions stabilize superfluidity. Optical lattices with artificial spin-orbit coupling challenge this paradigm because here kinetic energy can be
Externí odkaz:
http://arxiv.org/abs/1606.08439
Publikováno v:
Phys. Rev. Lett. 119, 073002 (2017)
Motivated by recent optical lattice experiments [J.-y. Choi et al., Science 352, 1547 (2016)], we study the dynamics of strongly interacting bosons in the presence of disorder in two dimensions. We show that Gutzwiller mean-field theory (GMFT) captur
Externí odkaz:
http://arxiv.org/abs/1606.03444
Publikováno v:
Phys. Rev. A 95, 053624 (2017)
Observations of center of mass dynamics offer a straightforward method to identify strongly interacting quantum phases of atoms placed in optical lattices. We theoretically study the dynamics of states derived from the disordered Bose-Hubbard model i
Externí odkaz:
http://arxiv.org/abs/1601.06817
Publikováno v:
Phys. Rev. B 92, 174512 (2015)
We investigate effects of ordinary nonmagnetic disorder in the bulk of a superconductor on magnetic adatom-induced Shiba states and on the proximity-induced superconductivity in a nanowire that is tunnel coupled to the bulk superconductor. Within the
Externí odkaz:
http://arxiv.org/abs/1508.04134
Publikováno v:
New J. Phys. 17, 075001 (2015)
We theoretically consider the substrate-induced Majorana localization length renormalization in nanowires in contact with a bulk superconductor in the strong tunnel-coupled regime, showing explicitly that this renormalization depends strongly on the
Externí odkaz:
http://arxiv.org/abs/1503.00594
Publikováno v:
Phys. Rev. B 90, 224517 (2014)
We consider recent experiments on wide superconductor-quantum spin Hall insulator (QSHI)-superconductor Josephson junctions, which have shown preliminary evidence of proximity-induced superconductivity at the edge-modes of the QSHI system based on an
Externí odkaz:
http://arxiv.org/abs/1410.4205