Now showing items 1-5 of 5

    • Kibble-Zurek scaling in quantum speed limits for shortcuts to adiabaticity 

      Puebla, Ricardo; Deffner, Sebastian; Campbell, Steve (2020-06-08)
      Geometric quantum speed limits quantify the trade-off between the rate with which quantum states can change and the resources that are expended during the evolution. Counterdiabatic driving is a unique tool from shortcuts ...
    • Orthogonality Catastrophe as a Consequence of the Quantum Speed Limit 

      Fogarty, Thomas; Deffner, Sebastian; Busch, Thomas; Campbell, Steve (2019-10-25)
      A remarkable feature of quantum many-body systems is the orthogonality catastrophe which describes their extensively growing sensitivity to local perturbations and plays an important role in condensed matter physics. Here ...
    • Precision thermometry and the quantum speed limit 

      Campbell, Steve; Genoni, Marco G; Deffner, Sebastian (IOP, 2018-02-05)
      We assess precision thermometry for an arbitrary single quantum system. For a d-dimensional harmonic system we show that the gap sets a single temperature that can be optimally estimated. Furthermore, we establish a simple ...
    • Quantum speed limits: from Heisenberg's uncertainty principle to optimal quantum control 

      Deffner, Sebastian; Campbell, Steve (IOP, 2017-10-10)
      One of the most widely known building blocks of modern physics is Heisenberg's indeterminacy principle. Among the different statements of this fundamental property of the full quantum mechanical nature of physical reality, ...
    • Trade-Off Between Speed and Cost in Shortcuts to Adiabaticity 

      Campbell, Steve; Deffner, Sebastian (American Physical Society (APS), 2017-03-08)
      Achieving effectively adiabatic dynamics is a ubiquitous goal in almost all areas of quantum physics. Here, we study the speed with which a quantum system can be driven when employing transitionless quantum driving. As a ...