Assisted Work Distillation

Benjamin Morris, Ludovico Lami, and Gerardo Adesso
Phys. Rev. Lett. 122, 130601 – Published 2 April 2019
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Abstract

We study the process of assisted work distillation. This scenario arises when two parties share a bipartite quantum state ρAB and their task is to locally distill the optimal amount of work when one party is restricted to thermal operations, whereas the other can perform general quantum operations and they are allowed to communicate classically. We demonstrate that this question is intimately related to the distillation of classical and quantum correlations. In particular, we show that the advantage of one party performing global measurements over many copies of ρAB is related to the nonadditivity of the entanglement of formation. We also show that there may exist work bound in the quantum correlations of the state that is only extractable under the wider class of local Gibbs-preserving operations.

  • Figure
  • Received 19 December 2018
  • Revised 8 February 2019

DOI:https://doi.org/10.1103/PhysRevLett.122.130601

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Statistical Physics & ThermodynamicsQuantum Information, Science & Technology

Authors & Affiliations

Benjamin Morris*, Ludovico Lami, and Gerardo Adesso

  • School of Mathematical Sciences and Centre for the Mathematics and Theoretical Physics of Quantum Non-Equilibrium Systems, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom

  • *benjamin.morris@nottingham.ac.uk
  • ludovico.lami@gmail.com
  • gerardo.adesso@nottingham.ac.uk

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Issue

Vol. 122, Iss. 13 — 5 April 2019

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