Pierre Rouchon

8th Elgersburg School 2016 (February 28 - March 5, 2016)

Quantum control

Pierre Rouchon (Mines-ParisTech, Quantic research team)
Alain Sarlette (Inria, Quantic research team)

QND measurement of photon(s): MatLab script of Quantum Monte-Carlo Trajectories:

Wave function formulation: WaveModelPhotonBox.m
Density operator formulations:
RhoModelPhotonBox_0.m (ideal case)
RhoModelPhotonBox_1.m (detection efficiency)
RhoModelPhotonBox_2.m (detection efficiency + detection errors)
RhoModelPhotonBox_3.m (detection efficiency + detection errors + cavity decoherence and thermal photon(s))
measurement-based feedback stabilization towards a photon-number state:
FeedbackTemplate_0.m (ideal case, for completion with the Lyapunov quantum-state feedback)
Feedback PhotonBox_0.m (ideal case)
Feedback PhotonBox_1.m (detection efficiency)
Feedback PhotonBox_2.m (detection efficiency + detection errors)
Feedback PhotonBox_3.m (detection efficiency + detection errors + cavity decoherence and thermal photon(s))

QND measurement of a qubit described by a diffusive stochastic master equation.
MatLab script of Quantum Monte-Carlo Trajectories:
TemplateQubit_0.m
FeedbackQubit_0.m (ideal case)
FeedbackQubit_1.m (finite life time of the excited state)
FeedbackQubit_2.m (finite life time of the excited state + detection efficiency)

Morning lectures and afternoon exercises (March 4, 2016): ElgersburgQC2016.pdf

Lecture Notes (March 18, 2015): PDF