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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We investigate coupled-qubit-based thermal machines powered by quantummeasurements and feedback. We consider two different versions of the machine:1) a quantum Maxwell's demon where the coupled-qubit system is connected to adetachable single shared bath, and 2) a measurement-assisted refrigerator wherethe coupled-qubit system is in contant with a hot and cold bath. In the quantumMaxwell's demon case we discuss both discrete and continuous measurements. Wefind that the power output from a single qubit-based device can be improved bycoupling it to the second qubit. We further find that the simultaneousmeasurement of both qubits can produce higher net heat extraction compared totwo setups operated in parallel where only single-qubit measurements areperformed. In the refrigerator case, we use continuous measurement and unitaryoperations to power the coupled-qubit-based refrigerator. We find that thecooling power of a refrigerator operated with swap operations can be enhancedby performing suitable measurements.

Measurement-based quantum thermal machines with feedback control