Quantum tight-binding chains with dissipative coupling

Abstract

We present a one-dimensional tight-binding chain of two-level systems coupled only through common dissipative Markovian reservoirs. This quantum chain can demonstrate anomalous thermodynamic behavior contradicting Fourier law. Population dynamics of individual systems of the chain is polynomial with the order determined by the initial state of the chain. The chain can simulate classically hard problems, such as multi-dimensional random walks.

Keywords

• spin chain
• dissipative coupling
• non-exponential decay
• random walk
• 03.65.Yz
• 42.50.Dv