python-chp-stabilizer-simulator
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Simple python implementation of Scott Aaronson et al's CHP simulator.
Python CHP Stabilizer Simulator
A simple reference python implementation of Scott Aaronson and Daniel Gottesman's CHP simulator
as defined in
their 2004 paper "Improved Simulation of Stabilizer Circuits" <https://arxiv.org/abs/quant-ph/0406196>__.
This simulator is capable of simulating quantum stabilizer circuits in polynomial time and space.
Specifically, it uses O(q^2*m + q*c) time and O(q^2) space where
q is the number of qubits,
m is the number of measurements,
and c is the number of Hadamard/CNOT/Phase gates.
Installation
The chp_sim package is available on pypi and can be installed using pip:
.. code-block:: bash
python -m pip install chp_sim
Alternatively, you can just copy paste the chp_sim directory of the github
repository into your project.
The only runtime dependency is numpy.
Usage
Here is an example of simulating
a circuit <https://algassert.com/quirk#circuit=%7B%22cols%22%3A%5B%5B1%2C1%2C%22H%22%5D%2C%5B%22X%22%2C1%2C%22%E2%80%A2%22%5D%2C%5B1%2C%22X%22%2C%22%E2%80%A2%22%5D%2C%5B%22Z%5E%C2%BD%22%2C%22Z%5E%C2%BD%22%5D%2C%5B%22H%22%2C%22H%22%2C%22H%22%5D%2C%5B%22Measure%22%2C%22Measure%22%2C%22Measure%22%5D%2C%5B%22Chance3%22%5D%5D%7D>__:
.. code-block:: python
import chp_sim
sim = chp_sim.ChpSimulator(num_qubits=3)
# Desired circuit:
# 0: -------X-------S---H---M---
# |
# 1: -------|---X---S---H---M---
# | |
# 2: ---H---@---@-------H---M---
sim.hadamard(2)
sim.cnot(2, 0)
sim.cnot(2, 1)
sim.phase(0)
sim.phase(1)
sim.hadamard(0)
sim.hadamard(1)
sim.hadamard(2)
# Show internal simulator state.
print(sim, '\n')
# prints:
# -Y..
# -.Y.
# +..X
# ----
# +X.X
# +.XX
# +YYZ
# Perform measurements
v0 = sim.measure(0)
v1 = sim.measure(1)
v2 = sim.measure(2)
print(v0)
print(v1)
print(v2)
# prints [note: one of four possible results for this circuit]:
# True (random)
# False (random)
# False (determined)
# Check pattern the outputs should satisfy.
assert not v0.determined
assert not v1.determined
assert v2.determined
assert bool(v0) ^ bool(v1) ^ bool(v2)
Packaging
(Notes to self on how to release a new version.)
-
Edit the source code as needed and run tests.
.. code-block:: bash
pytest -
Build the wheel.
.. code-block:: bash
python3 setup.py -q bdist_wheel ls dist -
Upload to test pypi.
.. code-block:: bash
twine upload dist/*.whl --repository-url=https://test.pypi.org/legacy/ --username="${TEST_TWINE_USERNAME}" --password="${TEST_TWINE_PASSWORD}" -
Verify the test package works.
.. code-block:: bash
mkvirtualenv test --python=/usr/bin/python3 pip install numpy pip install chp_sim --index-url=https://test.pypi.org/simple/ python -c "import chp_sim; print(chp_sim.__version__); print(chp_sim.ChpSimulator(4))" -
Upload to prod pypi.
.. code-block:: bash
twine upload dist/*.whl --username="${PROD_TWINE_USERNAME}" --password="${PROD_TWINE_PASSWORD}" -
Verify the prod package works.
.. code-block:: bash
mkvirtualenv test --python=/usr/bin/python3 pip install chp_sim python -c "import chp_sim; print(chp_sim.__version__); print(chp_sim.ChpSimulator(4))"
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