---
# System prepended metadata

title: SC qubits and ML brainstorm
tags: [Machine Learning]

---

# SC qubits and ML brainstorm

###### tags: `Machine Learning`, 'Superconducting Qubits'

:::info
Please feel free to adjust anything below! It is meant to be a doc where we can all share thoughts and keep track of ideas.

LaTeX or Code can be added too:
$$
x = {-b \pm \sqrt{b^2-4ac} \over 2a}
$$

- Code block with color and line numbers：
```python
s = "Python syntax highlighting";
print(s);
````
:::

## Table of contents
[ToC]

### Optimizing pulses for high-fidelity parity readout gate
Given a particular circuit of 2 or 4 qubits, Morten&Team have a way of doing a parity readout by using 2 microwave pulses at a specific frequency. Can we optimize this pulse to have a high-fidelity parity readout?

Further thoughts:
  * Numerical simulation req's
      * Input: pulse shapes (e.g. parameters)
      * Output: gate fidelity
  * Optimization methods:
      * Monte Carlo Tree Search
      * CRAB
      * Evolutionary strategy

### Process tomography
  * For quantum **state** tomography, can go to POVMs with RNN to get linear scaling in req'd nr of measurements for reconstruction.
      * What is the equivalent of 'going to POVMs (i.e. Born's rule)' for a process?!
    * Need literature Search

### SC Circuit design
  * [Computer aided SC circuit design](https://www.nature.com/articles/s41534-021-00382-6) already done
      * Did not find the twisted coupling. Because not looking for it? What was the objective? If we ask it to look for 'best circuit for CZ gate', would it find it?



