Jeffrey Cohn, Khadijeh Najafi, et al.
APS March Meeting 2020
We introduce a variant of Quantum Amplitude Estimation (QAE), called Iterative QAE (IQAE), which does not rely on Quantum Phase Estimation (QPE) but is only based on Grover’s Algorithm, which reduces the required number of qubits and gates. We provide a rigorous analysis of IQAE and prove that it achieves a quadratic speedup up to a double-logarithmic factor compared to classical Monte Carlo simulation with provably small constant overhead. Furthermore, we show with an empirical study that our algorithm outperforms other known QAE variants without QPE, some even by orders of magnitude, i.e., our algorithm requires significantly fewer samples to achieve the same estimation accuracy and confidence level.
Jeffrey Cohn, Khadijeh Najafi, et al.
APS March Meeting 2020
Emery Doucet, Leonardo Ranzani, et al.
APS March Meeting 2022
Philippe Suchsland, Francesco Tacchino, et al.
APS March Meeting 2021
Aaron Finck, Santino Carnevale, et al.
APS March Meeting 2021