Optimal depth and a novel approach to variational unitary quantum process tomography
Vladlen Galetsky,
Pol Julià Farré,
Soham Ghosh
et al.
Abstract:In this work, we present two new methods for Variational Quantum Circuit (VQC) Process Tomography onto \(n\) qubits systems: unitary Process Tomography based on Variational Quantum Circuits (PT\_VQC) and Unitary evolution-based Variational Quantum Singular Value Decomposition (U-VQSVD). 

Compared to the state of the art, PT\_VQC halves in each run the required amount of qubits for unitary process tomography and decreases the required state initializations from \(4^{n}\) to just \(2^{n}\), all … Show more
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