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Harnessing fluctuations in thermodynamic computing via time-reversal symmetries

Wimsatt, Gregory and Saira, Olli-Pentti and Boyd, Alexander B. and Matheny, Matthew H. and Han, Siyuan and Roukes, Michael L. and Crutchfield, James P. (2021) Harnessing fluctuations in thermodynamic computing via time-reversal symmetries. Physical Review Research, 3 (3). Art. No. 033115. ISSN 2643-1564. doi:10.1103/physrevresearch.3.033115.

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We experimentally demonstrate that highly structured distributions of work emerge during even the simple task of erasing a single bit. These are signatures of a refined suite of time-reversal symmetries in distinct functional classes of microscopic trajectories. As a consequence, we introduce a broad family of conditional fluctuation theorems that the component work distributions must satisfy. Since they identify entropy production, the component work distributions encode the frequency of various mechanisms of both success and failure during computing, as well giving improved estimates of the total irreversibly dissipated heat. This new diagnostic tool provides strong evidence that thermodynamic computing at the nanoscale can be constructively harnessed. We experimentally verify this functional decomposition and the new class of fluctuation theorems by measuring transitions between flux states in a superconducting circuit.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Saira, Olli-Pentti0000-0001-9715-0897
Matheny, Matthew H.0000-0002-3488-1083
Han, Siyuan0000-0002-1106-9076
Roukes, Michael L.0000-0002-2916-6026
Crutchfield, James P.0000-0003-4466-5410
Additional Information:© 2021 Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Received 29 January 2021; accepted 21 June 2021; published 5 August 2021. We thank C. Jarzynski, D. Mandal, and P. Riechers for helpful discussions. As an External Faculty member, J.P.C. thanks the Santa Fe Institute and the Telluride Science Research Center for their hospitality during visits. This material is based upon work supported by, or in part by, the US Army Research Laboratory and the US Army Research Office under Contracts No. W911NF-13-1-0390 No. W911NF-18-1-0028 and No. W911NF-21-1-0048.
Funding AgencyGrant Number
Army Research LaboratoryUNSPECIFIED
Army Research Office (ARO)W911NF-13-1-0390
Army Research Office (ARO)W911NF-18-1-0028
Army Research Office (ARO)W911NF-21-1-0048
Issue or Number:3
Record Number:CaltechAUTHORS:20210826-201445534
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:110584
Deposited By: Tony Diaz
Deposited On:26 Aug 2021 21:22
Last Modified:26 Aug 2021 21:22

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