Impact of independent reservoirs on the quantum Zeno and anti-Zeno effects

Abstract

In this paper, we look into what happens to a quantum system under repeated measurements if it interacts with two independent reservoirs. In particular, we look at the behavior of a two-level system interacting with reservoirs consisting of harmonic oscillators. The interaction with one reservoir is weak with a dissipative-type coupling, while the interaction with the other reservoir is strong with a dephasing-type coupling. Using a polaron transformation, we show that the presence of the strongly coupled reservoir can actually reduce the decay rate of the quantum system due to the effect of the weakly-coupled reservoir.

7 pages, comments most welcome

References in corpus (5)

• Deterministic generation of large cluster states using non-deterministic collective measurements based on quantum Zeno effect
• Quantum anti-Zeno effect without rotating wave approximation
• Zeno and anti-Zeno effects for quantum Brownian motion
• Anti-Zeno Effect for Quantum Transport in Disordered Systems
• Operator Quantum Zeno Effect: Protecting Quantum Information with Noisy Two-Qubit Interactions