D. S. Liu

Add the matrix logrithm method logm() to Qobj.

1

### Problem Description I don't find matrix logrithm logm() in Qobj methods, so to compute matrix logrithm I call logm() in scipy.linalg, which changes the type from qobj to ndarray....

**Is your feature request related to a problem? Please describe.** I want to solve the problem ``` cp.Minimize(cp.norm(P - F@Pi, 'fro')) ``` where ```P``` and ```F``` are numpy matrices, and...

Strawberryfields with ProcessPoolExecutor

6

The number of shots can only be set to 1 for 'fock' backend, as described [here](https://strawberryfields.ai/photonics/demos/run_teleportation.html). Therefore, to obtain 10000 measurement sampes, I need to run the circuit for 10000...

Is it possible to use ProcessPoolExecutor to accelerate the for loop in the forward method in QApproximating_EN.ipynb

1

Since the forward method in the example [Quantum Neural Network Approximating Functions](https://github.com/PaddlePaddle/Quantum/blob/master/tutorials/machine_learning/QApproximating_EN.ipynb) uses a for loop, it's quite slow when the depth of the circuit is large. I want to...

The Santa Fe laser timeseries dataset is widely used for benchmarking, e.g. in the paper [Harnessing nonlinearity: Predicting chaotic systems and saving energy in wireless communication](https://www.science.org/doi/abs/10.1126/science.1091277). It would be nice...

Infinite loop with derandomized measurement when the number of measurements per observables is large.

1

For the problem I'm considering, the number of qubits of the quantum system is 10. And I want to measure, using derandomized measurement, all the 1-local and 2-local observables consist...