CATS@UCD
  • Home
  • Team
  • Projects
  • Publications
  • Events
Work Package 1: Quantum speed limits in thermodynamic processes
The steady miniaturisation of devices, along with the development of wholly new quantum technologies, has led to renewed interest in understanding the thermodynamics of quantum systems. The previously familiar concepts of work and heat are being re-examined when the working medium is genuinely quantum. By examining the flow of energy between quantum systems and their environments, while also assessing the build up of correlations between them, we have established meaningful definitions of thermodynamic quantities. How fast such a dynamic can occur has particular practical relevance which will be explored in two settings of broad importance: thermometry and information erasure. Accurately estimating the temperature is a ubiquitous task, and already quantum systems have been shown to be the ultimate probes. Similarly, processing information often comes with an inescapable energetic cost as dictated by Landauer’s bound. Interestingly this sets a fundamental limit the energy cost of an irreversible computation, however to date this limit appears only achievable when the process is performed relatively slowly. It is thus of huge practical relevance to develop fast schemes that nevertheless cost the minimal amount energetically, and therefore will have wide-reaching impact on potential computational models.

Objective and impact: The main goal of WP1 is to analyse the way in which different forms of energy flow when a quantum system is in contact with its environment, with a particular emphasis on understanding the role and attainability of the quantum speed limit.
Picture
Picture
Publications
  1. Collisional unfolding of quantum Darwinism
    Steve Campbell, Barış Çakmak, Özgür E. Müstecaplıoğlu, Mauro Paternostro, and Bassano Vacchini
    Phys. Rev. A 99, 042103 (2019)
  2. ​Precursors of non-Markovianity
    Steve Campbell, Maria Popovic, Dario Tamascelli, and Bassano Vacchini 
    New J. Phys. 21, 053036 (2019)
  3. Stable adiabatic quantum batteries
    Alan C. Santos, Barış Çakmak, Steve Campbell, and Nikolaj T. Zinner
    Phys. Rev. E 100, 032107 (2019)
  4. Thermalization of finite many-body systems by a collision model
    Onat Arısoy, Steve Campbell, and Özgür E. Müstecaplıoğlu
    Entropy 21, 1182 (2019)
  5. Non-equilibrium steady-states of memoryless quantum collision models
    Giacomo Guarnieri, Daniele Morrone, Barış Çakmak, Francesco Plastina, and Steve Campbell
    Phys. Lett. A 383, 126576 (2020)
  6. In-situ thermometry of a cold Fermi gas via dephasing impurities
    Mark T. Mitchison, Thomás Fogarty, Giacomo Guarnieri, Steve Campbell, Thomas Busch, and John Goold
    Phys. Rev. Lett. 125, 080402 (2020)
  7. Action quantum speed limits
    Eoin O'Connor, Giacomo Guarnieri, and Steve Campbell
    Phys. Rev. A 103, 022210 (2021)
  8. Quantum Darwinism in a composite system: Objectivity versus classicality
    Barış Çakmak, Özgür E. Müstecaplıoğlu, Mauro Paternostro, Bassano Vacchini, and Steve Campbell
    Entropy 23, 995 (2021)
  9. Quantum Darwinism in a structured spin environment
    Eoghan Ryan, Mauro Paternostro, and Steve Campbell
    Phys. Lett. A 416, 127675 (2021)
  10. Stochastic collisional quantum thermometry
    Eoin O'Connor, Bassano Vacchini, and Steve Campbell
    Entropy 23, 1634 (2021)
  11. Diverging quantum speed limits: A herald of classicality
    Pablo M. Poggi, Steve Campbell, and Sebastian Deffner
    PRX Quantum 2, 040349 (2021)
  12. Correlations, information backflow, and objectivity in a class of pure dephasing models
    Nina Megier, Andrea Smirne, Steve Campbell, and Bassano Vacchini
    Entropy 24, 304 (2022)
  13. Robustness of Enhanced Shortcuts to Adiabaticity in Lattice Transport
    Chris Whitty, Anthony Kiely, and Andreas Ruschhaupt
    Phys. Rev. A 105, 013311 (2022)
  14. Classical dissipative cost of quantum control
    Anthony Kiely, Steve Campbell, and Gabriel T. Landi
    Phys. Rev. A 106, 012202 (2022)
  15. DQC1 as an Open Quantum System
    Jake Xuereb, Steve Campbell, John Goold, and André Xuereb
    Phys. Rev. A 107, 042222 (2023)
  16. Thermometry of strongly correlated fermionic quantum systems using impurity probes
    George Mihailescu, Steve Campbell, and Andrew K. Mitchell
    Phys. Rev. A 107, 042614 (2023)
  17. Robustness of controlled Hamiltonian approaches to unitary quantum gates
    Eoin Carolan, Barış Çakmak, and Steve Campbell
    Phys. Rev. A 108, 022423 (2023) 
  18. Fisher information rates in sequentially measured quantum systems
    Eoin O'Connor, Steve Campbell, and Gabriel T. Landi
    New J. Phys. 26, 033048 (2024)
  19. First Passage Times for Continuous Quantum Measurement Currents
    Michael J. Kewming, Anthony Kiely, Steve Campbell, and Gabriel T. Landi
    Phys. Rev. A 109, L050202 (2024)
  20. Universally Robust Quantum Control
    Pablo M. Poggi, Gabriele De Chiara, Steve Campbell, and Anthony Kiely
    Phys. Rev. Lett. 132, 193801 (2024)
Powered by Create your own unique website with customizable templates.
  • Home
  • Team
  • Projects
  • Publications
  • Events