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Condensed Matter > Statistical Mechanics
Title: Logical and thermodynamical reversibility: optimized experimental implementation of the NOT operation
(Submitted on 23 Feb 2023 (v1), last revised 31 Oct 2023 (this version, v2))
Abstract: The NOT operation is a reversible transformation acting on a 1-bit logical state, and should be achievable in a physically reversible manner at no energetic cost. We experimentally demonstrate a bit-flip protocol based on the momentum of an underdamped oscillator confined in a double well potential. The protocol is designed to be reversible in the ideal dissipationless case, and the thermodynamic work required is inversely proportional to the quality factor of the system. Our implementation demonstrates an energy dissipation significantly lower than the minimal cost of information processing in logically irreversible operations. It is moreover performed at high speed: a fully equilibrated final state is reached in only half a period of the oscillator. The results are supported by an analytical model that takes into account the presence of irreversibility. The Letter concludes with a discussion of optimization strategies.
Submission history
From: Ludovic Bellon [view email][v1] Thu, 23 Feb 2023 10:31:03 GMT (1061kb,D)
[v2] Tue, 31 Oct 2023 17:46:07 GMT (1253kb,D)
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