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Enhancing the Charging Power of Quantum Batteries

Francesco Campaioli, Felix A. Pollock, Felix C. Binder, Lucas Céleri, John Goold, Sai Vinjanampathy, and Kavan Modi
Phys. Rev. Lett. 118, 150601 – Published 12 April 2017
Physics logo See Synopsis: Speeding Up Battery Charging with Quantum Physics
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Abstract

Can collective quantum effects make a difference in a meaningful thermodynamic operation? Focusing on energy storage and batteries, we demonstrate that quantum mechanics can lead to an enhancement in the amount of work deposited per unit time, i.e., the charging power, when N batteries are charged collectively. We first derive analytic upper bounds for the collective quantum advantage in charging power for two choices of constraints on the charging Hamiltonian. We then demonstrate that even in the absence of quantum entanglement this advantage can be extensive. For our main result, we provide an upper bound to the achievable quantum advantage when the interaction order is restricted; i.e., at most k batteries are interacting. This constitutes a fundamental limit on the advantage offered by quantum technologies over their classical counterparts.

  • Received 20 December 2016

DOI:https://doi.org/10.1103/PhysRevLett.118.150601

© 2017 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyStatistical Physics & Thermodynamics

Synopsis

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Speeding Up Battery Charging with Quantum Physics

Published 12 April 2017

Calculations show that charging a set of batteries can go faster if the batteries are coupled together quantum mechanically.

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Authors & Affiliations

Francesco Campaioli1,*, Felix A. Pollock1, Felix C. Binder2, Lucas Céleri3, John Goold4, Sai Vinjanampathy5,6, and Kavan Modi1,†

  • 1School of Physics and Astronomy, Monash University, Victoria 3800, Australia
  • 2School of Physical & Mathematical Sciences, Nanyang Technological University, 637371 Singapore, Singapore
  • 3Instituto de Física, Universidade Federal de Goiás, Caixa Postal 131, 74001-970, Goiânia, Brazil
  • 4The Abdus Salam International Centre for Theoretical Physics (ICTP), Trieste 34151, Italy
  • 5Department of Physics, Indian Institute of Technology Bombay, Mumbai 400076, India
  • 6Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, 117543 Singapore, Singapore

  • *francesco.campaioli@monash.edu
  • kavan.modi@monash.edu

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Issue

Vol. 118, Iss. 15 — 14 April 2017

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