Enhanced steady-state coherence via repeated system-bath interactions

Abstract

The appearance of steady-state coherence (SSC) from system-bath interaction proves that quantum effects can appear without an external drive. Such SSC could become a resource to demonstrate quantum advantage in the applications. We predict the generation of SSC if the target system repeatedly interacts with independent and non-correlated bath elements. To describe their behavior, we use the collision model approach of system-bath interaction, where the system interacts with one bath element (initially in an incoherent state) at a time, asymptotically (in the fast-collision regime) mimicking a macroscopic Markovian bath coupled to the target system. Therefore, the SSC qualitatively appears to be the same as if the continuous Markovian bath would be used. We confirm that the presence of composite system-bath interactions under the rotating-wave approximation (RWA) is the necessary condition for the generation of SSC using thermal resources in collision models. Remarkably, we show that SSC substantially increases if the target system interacts collectively with more than one bath element at a time. Already few bath elements collectively interacting with the target system are sufficient to increase SSC at non-zero temperatures at the cost of tolerable lowering the final state purity. From the thermodynamic perspective, the SSC generation in our collision models is inevitably linked to a non zero power input (and thus heat dissipated to the bath) necessary to reach the steady-state, although such energetic cost can be lower compared to cases relying on SSC non generating interactions.

19 pages, 6 figures. Two columns. Close to the published version

References in corpus (11)

• Quantum States and Phases in Driven Open Quantum Systems with Cold Atoms
• Quantum technologies with hybrid systems
• Quantum collision models: open system dynamics from repeated interactions
• Collision-model-based approach to non-Markovian quantum dynamics
• Quantum Interface of an Electron and a Nuclear Ensemble
• Gibbs-Preserving Maps outperform Thermal Operations in the quantum regime
• Composite quantum collision models
• Collision models can efficiently simulate any multipartite Markovian quantum dynamics
• Energetic and entropic effects of bath-induced coherences
• Quantum memory enhanced dissipative entanglement creation in non-equilibrium steady states
• Sharp negative differential resistance from vibrational mode softening in molecular junctions

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