Universal dynamical control of decay and decoherence for weak and
strong system-bath coupling
(pp285-317)
Goren Gordon, Gershon Kurizki, Abraham
G. Kofman, and Sophie Pellegrin
doi:
https://doi.org/10.26421/QIC5.45-3
Abstracts:
A unified theory is given of dynamically modified decay and decoherence
in driven two-level and multilevel quantum systems that
are weakly
coupled to
arbitrary finite-temperature reservoirs
and undergo random phase fluctuations. Criteria
for the optimization of decoherence suppression and the limitations
of this approach are obtained. For
a driven qubit that is strongly
coupled to
the continuum edge of
reservoir's spectrum, we demonstrate that only an appropriately ordered
sequence of abrupt changes of the resonance frequency, near the
continuum edge, can effectively protect the qubit state from decoherence.
Key words:
decoherence control, dynamical control,
quantum information |