6533b7d8fe1ef96bd1269a8a
RESEARCH PRODUCT
Simple scheme for extracting work with a single bath
Benedetto MilitelloBenedetto MilitelloAnna NapoliAnna NapoliNicolò PiccioneBruno Bellomosubject
Scheme (programming language)Work (thermodynamics)Ideal (set theory)Quantum ThermodynamicSettore FIS/02 - Fisica Teorica Modelli E Metodi MatematiciComputer scienceProcess (computing)Cavity QEDTopology01 natural sciencesSettore FIS/03 - Fisica Della Materia010305 fluids & plasmasEntanglement[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph]Simple (abstract algebra)QubitTransfer (computing)0103 physical sciences010306 general physicscomputerProtocol (object-oriented programming)ComputingMilieux_MISCELLANEOUScomputer.programming_languagedescription
We propose a simple protocol exploiting the thermalization of a storage bipartite system S to extract work from a resource system R. The protocol is based on a recent work definition involving only a single bath. A general description of the protocol is provided without specifying the characteristics of S. We quantify both the extracted work and the ideal efficiency of the process, also giving maximum bounds for them. Then, we apply the protocol to two cases: two interacting qubits and the Rabi model. In both cases, for very strong couplings, an extraction of work comparable with the bare energies of the subsystems of S is obtained and its peak is reached for finite values of the bath temperature, T. We finally show, in the Rabi model at T=0, how to transfer the work stored in S to an external device, permitting thus a cyclic implementation of the whole work-extraction protocol. Our proposal makes use of simple operations not needing fine control.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-09-01 |