Quantum impulse control
Christopher Jarzynski (Univ. of Maryland)
| When |
May 30, 2022
from 11:00 to 12:00 |
|---|---|
| Where | Amphi Sciences de la Matière |
| Attendees |
Christopher Jarzynski |
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The quantum adiabatic theorem governs the evolution of a wavefunction under a slowly time-varying Hamiltonian. I will consider the opposite limit of a Hamiltonian that is varied impulsively: an infinitely strong perturbation is applied over an infinitesimal time interval. When the strength and duration of the perturbation scale appropriately, the impulse causes a wavefunction to undergo a sudden displacement and/or deformation. Remarkably, this evolution is described by a purely classical construction. I will use these results to show how tailored impulses can be used to control the behavior of a quantum wavefunction, in one or more degrees of freedom.