computational efficiency 1gradient evaluation 1multi-qubit systems 1quantum optimal control 1series expansion 1
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quant-ph2026
Analytical Series Expansion for Efficient Gradient Evaluation in Multi-Qubit Optimal Control
Ashutosh Mishra, Elena Lupo, Frank K. Wilhelm +1
The paper introduces a series‑expansion method to compute gradients for quantum optimal control, reducing the number of required matrix exponentials and achieving significant speed…
quant-ph2025
A proposal for charge basis tomography of superconducting qubits
Elena Lupo, Daniel Long, Daniel Dahan +4
We introduce a general protocol for obtaining the charge basis density matrix of a superconducting quantum circuit. Inspired by cavity state tomography, our protocol combines Josep…