Compensating for non-linear distortions in controlled quantum systems
- URL: http://arxiv.org/abs/2210.07833v2
- Date: Tue, 16 May 2023 15:08:07 GMT
- Title: Compensating for non-linear distortions in controlled quantum systems
- Authors: Juhi Singh, Robert Zeier, Tommaso Calarco, Felix Motzoi
- Abstract summary: Distortion of the input fields in an experimental platform alters the model accuracy and disturbs the predicted dynamics.
We present an effective method for estimating these distortions which is suitable for non-linear transfer functions of arbitrary lengths and magnitudes.
We have successfully tested our approach for a numerical example of a single Rydberg atom system.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Predictive design and optimization methods for controlled quantum systems
depend on the accuracy of the system model. Any distortion of the input fields
in an experimental platform alters the model accuracy and eventually disturbs
the predicted dynamics. These distortions can be non-linear with a strong
frequency dependence so that the field interacting with the microscopic quantum
system has limited resemblance to the input signal. We present an effective
method for estimating these distortions which is suitable for non-linear
transfer functions of arbitrary lengths and magnitudes provided the available
training data has enough spectral components. Using a quadratic estimation, we
have successfully tested our approach for a numerical example of a single
Rydberg atom system. The transfer function estimated from the presented method
is incorporated into an open-loop control optimization algorithm allowing for
high-fidelity operations in quantum experiments.
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