Jan Lukas Bosse

Both are gradient free methods for the optimization of noisy objective function. On a high level both work by estimating the gradient from noisy function evaluation and then doing gradient...

Some more explanations for the use cases I had in mind: 1) Finding eigenvalues and eigenvectors of (small) enough PauliSums. This is interesting for example for applications in QAOA or...

Thank you very much @ysinha1, I just merged the changes into our development branch and once we merge this into master and push another release github should automatically mark this...

That is fair enough. If there is a consensus for option 3 I can go ahead and alter my PR to implement that (unless, of coures, somebody else wants to...

Just chiming in here that exactly the same issues just bit me to and make it hard to work generic code that works for both Floats and Nums. Is there...

In SymPy `==` test for exact structural equality. So `(x == x) == true`, `(x == y) == false` but also `((x+y)**2 == x**2 + 2*x*y + y**2) == false`....

SymPy simply `w` to `False` and then there is no way to do any substitions in `w`. It seems to me that the questions is whether one thinks of a...

I was looking into implementing intermediate measurements with `measure!()` for `DensityMatrix`es. One option is to reimplement most of the `YaoAPI.measure!()` logic [here](https://github.com/QuantumBFS/Yao.jl/blob/3c32617433bcd9a1104309f93818061f6873a26f/lib/YaoArrayRegister/src/measure.jl#LL2C2-L10C15) for density matrices. The other option is to...

I am not sure I follow. How would `focus!` and `relax!` loose information? My idea was to change `DensityMatrix` is a `2^nactive × 2^nremain × 2^nactive × 2^nremain` array (assuming...

This can be closed since #455 got merged