cduck / chpsim.jl

A simple Julia library for simulation of stabilizer circuits (quantum circuits with only Clifford gates)

ChpSim

A simple simulator for quantum stabilizer circuits based on Scott Aaronson, Daniel Gottesman, Improved Simulation of Stabilizer Circuits for Julia. Adapted from a Python implementation and uses a similar API.

This simulator can efficiently simulate Clifford operations on many qubits but does not support non-Clifford operations.

Install

Install ChpSim with Julia's package manager:

julia -e 'using Pkg; Pkg.add("ChpSim")'

Examples

using ChpSim
sim = ChpState(6)

hadamard!(sim, 1)     # Hadamard gate on the first qubit
phase!(sim, 6)        # S gate on the last qubit
cnot!(sim, 2, 3)      # CNOT gate with control on qubit 2 and target on 3
r = measure!(sim, 3)  # Measure qubit 3

r.value       # The boolean measurement, true or false
r.determined  # False if the qubit was in superposition before measurement

# Uses 1/8 the memory but is typically slower
using ChpSim
sim = ChpState(6, bitpack=true)