This repository is a set of notebooks showing how to perform the basic functions in ShadowQPT, or using classical shadows for Quantum Process Tomography. Please see our work on ShadowQPT in arxiv:2110.02965.

• Qiskit

• Tutorial_Shadow_State_Tomography.ipynb
  • How to use classical shadows to perform state tomography (both Clifford and Pauli)
• Tutorial_ShadowQPT_Tomography.ipynb
  • How to use ShadowQPT to construct a Choi matrix
  • How to predict overlaps and apply post-processing to a shadow constructed (noisy) Choi matrix

• Original work arxiv:2110.02965
• Classical shadow state tomography doi:10.1038/s41567-020-0932-7
• Quantum process tomography via completely positive and trace-preserving projection arxiv:1803.10062 (doi:10.1103/PhysRevA.98.062336)