QuantumSim

This is an educational project that implements a quantum circuit simulator in C++ for quantum registers. It implements the fundamental quantum gates and not much else but is easy to extend. There are no complexity optimizations for how the state vector is modified so the practical limit is around 20-30 qubits.

Usage

src/example.cpp currently holds an example circuit for Grover's algorithm applied to a very primitive 8 bit hash function. Typical usage is:

//create 2 qubit register collapsed to |00>
qureg r(2, 0);
//randomize bit 0
r.op_hadamard(0);
//controlled NOT on bit 1 with control bit 0
r.op_CX(1, 0);
//system will collapse to either |00> or |11> with equal probabilities
//this is known as the Bell state
r.measure();

Building

Simply run make to build the library at build/. You can build the example with make example.

git clone https://codeberg.org/Niko64/QuantumSim.git
cd QuantumSim
make

Windows

Use the MINGW=1 flag to build for Windows:

make MINGW=1