New answers tagged variational-quantum-algorithms
2
votes
Accepted
Quantum computation of classical Fisher information
Section 3 of this paper talks about strategies to obtain the classical Fisher information in a NISQ computing setting.
More concretely, this recent preprint details how to measure it in practice with ...
- 196
2
votes
What's the case when parameter-shift rule does not hold?
Judging from the citations for the parameter-shift rule, it seems that the referenced paper only considers the rule for generators $V$ with two eigenvalues.
There is a number of works generalizing ...
- 196
4
votes
Accepted
Why is it hard to prove complexity bounds for variational algorithms?
The goal of a variational quantum algorithm is to minimize a cost function $f(\theta)$ over $\theta$ where evaluating $f$ involves the output of a quantum computer. In short, the quantum computer ...
- 106
6
votes
Why is it hard to prove complexity bounds for variational algorithms?
Looking for a solution by following a heuristic criteria means that you are proceeding by intuition, which has no proof of being correct nor efficient. You propose a heuristic, you show the results, ...
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