Cost of counterdiabatic driving and work output

  title={Cost of counterdiabatic driving and work output},
  author={Yuanjian Zheng and Steve Campbell and Gabriele De Chiara and Dario Poletti},
  journal={Physical Review A},
Unitary processes allow for the transfer of work to and from Hamiltonian systems. However, to achieve nonzero power for the practical extraction of work, these processes must be performed within a finite time, which inevitably induces excitations in the system. We show that depending on the time scale of the process and the physical realization of the external driving employed, the use of counterdiabatic quantum driving to extract more work is not always effective. We also show that by virtue… 

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If the driving Hamiltonian is proportional to a magnetic field B(t) (for example for a spin in a magnetic field) then the power needed to generate it will be proportional to |B| 2

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    Here we consider that all ν W , j,n are identical

      In this work we only consider external drivings produced by the same type of fields, i.e. only magnetic fields

        However if the driving is proportional to the square of an electric field |E(t)| 2 (for example for optical lattices) then the power needed


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