Experimental characterization of the energetics of quantum logic gates

V. Cimini; S. Gherardini; M. Barbieri; I. Gianani; M. Sbroscia; L. Buffoni; M. Paternostro; F. Caruso

doi:10.1038/s41534-020-00325-7

Experimental characterization of the energetics of quantum logic gates

V. Cimini
, S. Gherardini
, M. Barbieri^*
, I. Gianani
, M. Sbroscia
, L. Buffoni
, M. Paternostro
, F. Caruso

^*Corresponding author for this work

School of Mathematics and Physics

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

40 Downloads (Pure)

Abstract

We characterize the energetic footprint of a two-qubit quantum gate from the perspective of non-equilibrium quantum thermodynamics. We experimentally reconstruct the statistics of energy and entropy fluctuations following the implementation of a controlled-unitary gate, linking them to the performance of the gate itself and the phenomenology of Landauer’s principle at the single-quantum level. Our work thus addresses the energetic cost of operating quantum circuits, a problem that is crucial for the grounding of the upcoming quantum technologies.

Original language	English
Article number	96
Journal	npj Quantum Information
Volume	6
DOIs	https://doi.org/10.1038/s41534-020-00325-7
Publication status	Published - 04 Dec 2020

Bibliographical note

Funding Information:
We thank A. Belenchia for a critical reading of the manuscript and useful comments. S.G., L.B., and F.C. were financially supported by the Fondazione CR Firenze through the project Q-BIOSCAN and QUANTUM-AI, PATHOS EU H2020 FET-OPEN Grant No. 828946, and UNIFI Grant Q-CODYCES. S.G. also acknowledges the MISTI Global Seed Funds MIT-FVG grant program. M.P. gratefully acknowledges support by the H2020 Collaborative Project TEQ (Grant Agreement 766900), the SFI-DfE Investigator Program through project QuNaNet (grant number 15/IA/2864), the Leverhulme Trust through the Research Project Grant UltraQuTe (grant number RGP-2018-266) and the Royal Society through the Wolfson Fellowship scheme (RSWF R3 183013), and the International Exchange scheme (grant number IEC R2 192220).

Publisher Copyright:
© 2020, The Author(s).

ASJC Scopus subject areas

Computer Science (miscellaneous)
Statistical and Nonlinear Physics
Computer Networks and Communications
Computational Theory and Mathematics

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10.1038/s41534-020-00325-7Licence: CC BY

Experimental characterization of the energetics of quantum logic gates
Copyright 2020 The Authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Final published version, 1.37 MBLicence: CC BY

Cite this

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abstract = "We characterize the energetic footprint of a two-qubit quantum gate from the perspective of non-equilibrium quantum thermodynamics. We experimentally reconstruct the statistics of energy and entropy fluctuations following the implementation of a controlled-unitary gate, linking them to the performance of the gate itself and the phenomenology of Landauer{\textquoteright}s principle at the single-quantum level. Our work thus addresses the energetic cost of operating quantum circuits, a problem that is crucial for the grounding of the upcoming quantum technologies. ",

author = "V. Cimini and S. Gherardini and M. Barbieri and I. Gianani and M. Sbroscia and L. Buffoni and M. Paternostro and F. Caruso",

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AU - Buffoni, L.

AU - Paternostro, M.

AU - Caruso, F.

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Experimental characterization of the energetics of quantum logic gates

Abstract

Bibliographical note

ASJC Scopus subject areas

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