547 research outputs found
Robust control of long distance entanglement in disordered spin chains
We derive temporally shaped control pulses for the creation of long-distance
entanglement in disordered spin chains. Our approach is based on a
time-dependent target functional and a time-local control strategy that permits
to ensure that the description of the chain in terms of matrix product states
is always valid. With this approach, we demonstrate that long-distance
entanglement can be created even for substantially disordered interaction
landscapes.Comment: Published versio
High fidelity quantum gates of trapped ions mediated by a dissipative bus mode
We describe the optimal realization of entangling quantum gates for trapped
ions mediated by a dissipative bus mode. With suitably shaped control pulses
one can substantially decrease ion-phonon entanglement while maintaining the
mediated interaction
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