English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We propose a physically realizable Maxwell's demon device using a spin valveinteracting unitarily for a short time with electrons placed on a tape ofquantum dots, which is thermodynamically equivalent to the device introduced byMandal and Jarzynski [PNAS 109, 11641 (2012)]. The model is exactly solvableand we show that it can be equivalently interpreted as a Brownian ratchetdemon. We then consider a measurement based discrete feedback scheme, whichproduces identical system dynamics, but possesses a different second lawinequality. We show that the second law for discrete feedback control canprovide a smaller, equal or larger bound on the maximum extractable work ascompared to the second law involving the tape of bits. Finally, we derive aneffective master equation governing the system evolution for Poissondistributed bits on the tape (or measurement times respectively) and we showthat its associated entropy production rate contains the same physicalstatement as the second law involving the tape of bits.

The Second Laws for an Information driven Current through a Spin Valve