Hi all,
Hannah will speak at group meeting tomorrow - see below for her title and
abstract. The Div Room's booked until 2:30 for a faculty meeting, so it
might be easier for Harvard people to Skype in from New Siberia.
All the best,
Ian
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Title: Characterization of Training Circuits for Hybrid Quantum-Classical
Algorithms
Abstract: Performing useful computations with current and near-term quantum
computers is becoming increasingly viable due to rapid advances in both
algorithms and hardware. A class of algorithms that are promising
candidates for demonstrating the utility of near-term quantum computers is
the so called hybrid quantum-classical (HQC) algorithms. A common
ingredient that plays a crucial role in the algorithmic performance of many
HQC algorithms is the parametrized quantum circuit that is tuned to prepare
quantum states relevant for (approximately) solving the problem of
interest. Despite the importance of these circuits, they are often
generated in the absence of a robust theoretical framework. In this work,
we introduce several descriptors to characterize a set of parametrized
circuits, including a measure of a circuit’s expressibility and how it
correlates with algorithmic performance. Ultimately, having a deeper
understanding of the qualities associated with an effective parametrized
circuit can lead to significant improvements in the overall development of
HQC algorithms.
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