Guppy

Guppy is a quantum programming language that is fully embedded into Python. It allows you to write high-level hybrid quantum programs with classical control flow and mid-circuit measurements using Pythonic syntax:

from guppylang import guppy
from guppylang.std.builtins import owned
from guppylang.std.quantum import cx, h, measure, qubit, x, z


@guppy
def teleport(src: qubit @ owned, tgt: qubit) -> None:
    """Teleports the state in `src` to `tgt`."""
    # Create ancilla and entangle it with src and tgt
    tmp = qubit()
    h(tmp)
    cx(tmp, tgt)
    cx(src, tmp)

    # Apply classical corrections
    h(src)
    if measure(src):
        z(tgt)
    if measure(tmp):
        x(tgt)

teleport.check()

Documentation

🌐 Guppy website

📖 Language guide

📒 Example notebooks

Install

Guppy can be installed via pip. Requires Python >= 3.10.

pip install guppylang

Development

See DEVELOPMENT.md for instructions on setting up the development environment.

Attribution

If you use this software, please cite it using CITATIONS.bib or CITATION.cff (click "Cite this repository" in the About section of the repository landing page).

License

This project is licensed under Apache License, Version 2.0 (LICENCE or http://www.apache.org/licenses/LICENSE-2.0).

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