HEIndividual fellowship2022–2024

TQC · Developing the Thermodynamics of Quantum Control

Horizon Europe — Marie Skłodowska-Curie Actions

Duration
2022-07-01 → 2024-06-30
EU contribution
€215,534
Participants
2
Scheme
HORIZON-TMA-MSCA-PF-EF

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Results in brief

Developing the Thermodynamics of Quantum Control

In this action, the researcher, experienced in Quantum Optics and Quantum Trajectories, has made numerous contributions to the field of Quantum Thermodynamics of quantum measurements. The novel results, focusing on the thermodynamic role of measurement, have since shed light on numerous studies related to quantum control. The work performed during this project has resulted in novel findings, notably regarding the thermodynamic role of quantum measurements and fluctuations outlined in WP1. It has since been written up as an extensive review/tutorial article, fostering collaborations with various research groups at the host institution and others in the European Union and the United States. This extensive manuscript has been published in Physical Review X Quantum. Further building on these results, the researcher has led the proposition of a theoretical protocol—which was subsequently tested—of a generalized Thermodynamic Uncertainty Relation (TUR), also known as a Kinetic Uncertainty relation (KUR), with an Australian collaboration in accordance with WP2 and WP3. These results were subsequently published in Physical Review Applied. Further investigations into the thermodynamics of measurement pertaining to time-keeping, energy extraction, and mesoscopics, fluctuation theorems (FTs) have also been proposed in collaboration with numerous European research groups, listed under publications. These manuscripts further underpin the researcher's success in developing a wide number of protocols in accordance with the stated objective of WP2. The development of the researcher's teaching expertise has also been enhanced by several lectures on quantum measurement theory taught to the Masters of Quantum Technology at the host institution. Dissemination and communication of the results have further been made at numerous conferences and group visits, facilitated by the Marie Curie Budget. Transfer of knowledge between the host and researcher was executed as planned. The host successfully transferred their expertise of thermodynamics, TURs, FTs and many-body physics to the researcher as demonstrated via the extensive list of publications. The researcher successfully transferred their understanding of Stochastic Quantum mechanics to two PhD students, as well as established numerous experimental collaborations between the host and other research institutions.

Data: CORDIS, © European Union

Project objective

Arguably one of the biggest difficulties facing quantum engineers is quantum control. Quantum systems are incredibly sensitive which is one of their greatest assets, but also and their Achilles’ heel. One can leverage the general theory of feedback and measurement-based quantum control to enhance quantum capabilities to a desired functionality, but there is a problem as quantum systems can be perturbed by those very measurements leading to a loss of control.The aim of this proposal is to develop a general and widely applicable thermodynamic framework of measurement-based quantum control which is abbreviated to the Thermodynamics of Quantum Control (TQC). Studying quantum control through the lens of thermodynamics is a novel idea and allows one to utilise the powerful tools developed in quantum thermodynamics. I will unify the stochastic behaviour of quantum measurements and quantum control with the state-of-the-art research in stochastic quantum thermodynamics. We will validate our proposal by developing testable protocols that can be implemented using current quantum technology and will commence designs with an experimental team in the later stages of the project. The timely results will answer fundamental questions regarding the effectiveness, precision, and efficiency of measurement-controlled sensors and engines. The research will be carried out in the perfectly suited 'Thermodynamics and energetics of Quantum Systems' (QuSys) group of Prof. John Goold at Trinity College Dublin.

Original text from CORDIS.

Participants

  • THE PROVOST, FELLOWS, FOUNDATION SCHOLARS & THE OTHER MEMBERS OF BOARD, OF THE COLLEGE OF THE HOLY & UNDIVIDED TRINITY OF QUEEN ELIZABETH NEAR DUBLIN · DublinCoordinatorIreland
  • THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD · OxfordUnited Kingdom

Links

Data: CORDIS, © European Union