Browsing by Subject "cond-mat.mes-hall"
Now showing items 1-7 of 7
-
Driven-Dissipative Phase Transition in a Kerr Oscillator: From Semi-Classical PT Symmetry to Quantum Fluctuations.
(Physical Review A, 2021-03-24)We study a minimal model that has a driven-dissipative quantum phase transition, namely a Kerr non-linear oscillator subject to driving and dissipation. Using mean-field theory, exact diagonalization, and the Keldysh formalism, ... -
Existence and computation of generalized Wannier functions for non-periodic systems in two dimensions and higher
Exponentially-localized Wannier functions (ELWFs) are a basis of the Fermi projection of a material consisting of functions which decay exponentially fast away from their maxima. When the material is insulating ... -
Interference of chiral Andreev edge states
(Nature Physics, 2020-08-01)© 2020, The Author(s), under exclusive licence to Springer Nature Limited. The search for topological excitations such as Majorana fermions has spurred interest in the boundaries between distinct quantum states. Here, we ... -
One-dimensional waveguide coupled to multiple qubits: Photon-photon correlations
(EPJ Quantum Technology, 2014-12-01)For a one-dimensional (1D) waveguide coupled to two or three qubits, we show that the photon-photon correlations have a wide variety of behavior, with structure that depends sensitively on the frequency and on the qubit-qubit ... -
Stabilization of a Majorana Zero Mode through Quantum Frustration.
(Physical Review B, 2020-07-01)We analyze a system in which a topological Majorana zero mode (MZM) combines with a MZM produced by quantum frustration. At the boundary between the topological and non-topological states, a MZM does not appear. The system ... -
Unveiling environmental entanglement in strongly dissipative qubits
(arXiv, 2013-01-30)The coupling of a qubit to a macroscopic reservoir plays a fundamental role in understanding the complex transition from the quantum to the classical world. Considering a harmonic environment, we use both intuitive arguments ... -
Wavepackets in inhomogeneous periodic media: effective particle-field dynamics and Berry curvature
(2017-04-23)We consider a model of an electron in a crystal moving under the influence of an external electric field: Schr\"{o}dinger's equation with a potential which is the sum of a periodic function and a general smooth function. ...
