Difference between revisions of "Ensemble.m"
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traj_data - trajectory data for subsequent diagnostic plotting | traj_data - trajectory data for subsequent diagnostic plotting | ||
| − | + | ||
fidelity - figure of merit for the overlap of the current state of the | fidelity - figure of merit for the overlap of the current state of the | ||
system and the desired state(s). When penalty methods are | system and the desired state(s). When penalty methods are | ||
specified, fidelity is returned as an array separating the | specified, fidelity is returned as an array separating the | ||
penalties from the simulation fidelity | penalties from the simulation fidelity | ||
| − | + | ||
gradient - gradient of the fidelity with respect to the control sequence. | gradient - gradient of the fidelity with respect to the control sequence. | ||
When penalty methods are specified, gradient is returned as an | When penalty methods are specified, gradient is returned as an | ||
array separating penalty gradients from the fidelity gradient | array separating penalty gradients from the fidelity gradient | ||
| − | + | ||
hessian - Hessian of the fidelity with respect to the control sequence. | hessian - Hessian of the fidelity with respect to the control sequence. | ||
When penalty methods are specified, hessian is returned as an | When penalty methods are specified, hessian is returned as an | ||
Revision as of 17:40, 5 June 2026
A parallel wrapper around GRAPE that enables ensemble optimal control optimisations. This function handles systems with multiple control power levels, multiple resonance offsets, multistate transfers, and ensembles of drift Liouvillians.
Syntax
[traj_data,fidelity,gradient,hessian]=ensemble(waveform,spin_system)
Arguments
waveform - control coefficients for each control operator, rad/s
Parameters
waveform - control coefficients for each control operator, rad/s
Outputs
traj_data - trajectory data for subsequent diagnostic plotting
fidelity - figure of merit for the overlap of the current state of the
system and the desired state(s). When penalty methods are
specified, fidelity is returned as an array separating the
penalties from the simulation fidelity
gradient - gradient of the fidelity with respect to the control sequence.
When penalty methods are specified, gradient is returned as an
array separating penalty gradients from the fidelity gradient
hessian - Hessian of the fidelity with respect to the control sequence.
When penalty methods are specified, hessian is returned as an
array separating penalty Hessians from the fidelity Hessian
Notes
This is a low level function that is not designed to be called directly. Use grape_xy.m and grape_phase.m instead.
See also
Version 2.0, authors: Ilya Kuprov, David Goodwin
