Add global phase gate to Qiskit Terra

[kevinsung]

Description

A gate that introduces a global phase. See Qiskit/qiskit#8236.

Deliverables

Fix Qiskit/qiskit#8236.

Mentors details

• Mentor 1
  • Name: Kevin Sung
  • GitHub ID: kevinsung
  • What they do: Qiskit Researcher

Number of mentees

1

Type of mentees

• Mentee 1
  • Required:
    • Basic knowledge of Qiskit, Python, git, and quantum computing
  • Nice to have:
    • experience contributing to Qiskit

[sergiomtzlosa]

Hi,

Sergio here, this problem seems appealing to me 🤔. Please can you give some more details? Thanks!

[kevinsung]

@sergiomtzlosa you can post any questions you have at the Terra issue Qiskit/qiskit#8236. There is already some discussion ongoing there.

[Pranshi24]

Hi @kevinsung I am interested in working on this project, I am working as a Quantum Researcher at Deloitte, and I have experience in using Qiskit as well. This will be a good experience for me. Let me know if we can connect on Slack to discuss more.

[sumit-kale]

@GemmaDawson

[kevinsung]

thank you @Pranshi24 , but @sumit-kale has already been matched with this project.

[sumit-kale]

The slides for Checkpoint 1 could be found below

Presentation Checkpoint 1.pdf

It covers the proposal motivation and objective behind this issue.

[sumit-kale]

Checkpoint#2

We worked on the mathematical definition of the gate and wrote the code for its implementation. We introduced a new class GlobalPhaseGate which creates a global phase (gphase) gate (e^{i\theta}) given the phase value theta. We are testing the code and will soon submit a PR.

A visual representation of the project is attached

[sumit-kale]

Checkpoint Final Showcase

Submitted a PR Adding global_phase gate in qiskit-terra #9251.

The link to the presentation slides is below
Final_showoff_Dec_8.pdf

The presentation covers motivation, objectives, and achievements.

[GemmaDawson]

Congratulations on completing all the requirements for QAMP Fall 2022!! 🌟🌟🌟