Markovian reservoir engineering, in which time evolution of a quantum system is governed
by a Lindblad master equation, is a powerful technique in studies of quantum phases of …

We investigate topological charge pum** in a system of interacting bosons in the tight-
binding limit, described by the Rice-Mele model. An appropriate topological invariant for the …

Topological insulators and superconductors at finite temperature can be characterized by
the topological Uhlmann phase. However, a direct experimental measurement of this …

A primary motivation for studying topological matter regards the protection of topological
order from its environment. In this work, we study a topological emitter array coupled to an …

Topology now plays a central role in physics, yet its applications have so far been restricted
to closed, lossless systems in thermodynamic equilibrium. Given that many physical systems …

We study the effects of the position of the passive and active cavities on the spontaneous
parity-time-(PT-) symmetry-breaking behavior in a non-Hermitian coupled-cavity-array …

Markovian master equations, often called Liouvillians or Lindbladians, are used to describe
decay and decoherence of a quantum system induced by that system's environment. While a …

We have applied the recently developed theory of topological Uhlmann numbers to a
representative model of a topological insulator in two dimensions, the Qi–Wu–Zhang model …

The Kubo formula is an equation that expresses the linear response of an observable due to
a time-dependent perturbation. It has been extended from closed systems to open systems …

It is well-known that the quantum linear response theory is based on the first-order
perturbation theory for a system in thermal equilibrium. Hence, this theory breaks down …