A unified quantum framework computes n-th order nonlinear spectroscopies on near-term devices by reformulating multi-time responses as weighted sums of finite-amplitude expectation values via a generalized parameter shift rule.
Evaluation of derivatives using ap- proximate generalized parameter shift rule
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A unified framework for efficient quantum simulation of nonlinear spectroscopy
A unified quantum framework computes n-th order nonlinear spectroscopies on near-term devices by reformulating multi-time responses as weighted sums of finite-amplitude expectation values via a generalized parameter shift rule.