6533b7cffe1ef96bd12590fa
RESEARCH PRODUCT
Stabilization of quantum metastable states by dissipation
Bernardo SpagnoloBernardo SpagnoloLuca MagazzùDavide ValentiP. Caldarasubject
PhysicsQuantum PhysicsQuantum decoherenceCondensed matter physicsStatistical Mechanics (cond-mat.stat-mech)FOS: Physical sciencesDouble-well potentialCondensed Matter PhysicDissipationCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsCoupling (physics)MetastabilityThermalQuantum Physics (quant-ph)QuantumCondensed Matter - Statistical MechanicsQuantum fluctuationdescription
Normally, quantum fluctuations enhance the escape from metastable states in the presence of dissipation. Here we show that dissipation can enhance the stability of a quantum metastable system, consisting of a particle moving in a strongly asymmetric double well potential, interacting with a thermal bath. We find that the escape time from the metastable state has a nonmonotonic behavior versus the system-bath coupling and the temperature, producing a stabilizing effect.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-01-01 |