This project implements a parallel and scalable quantum simulator based on the state vector approach. We extend the capabilities of quantum simulation by distributing the workload amongst various computer nodes and take advantage of combined shared memory.

This project is implemented in C++17. MPI is used for inter-process communication amongst computer nodes.

This simulator supports a subset of the OpenQASM 2.0 quantum assembly specification.
The following gate operations are implemented:

• Pauli X gate
• Pauli Y gate
• Pauli Z gate
• Hadamard gate
• Principle Square Root of X gate
• Principle Square Root of Y gate
• Principle Square Root of Z gate (S gate)
• T gate
• Controlled X gate
• Controlled Z gate
• Toffoli gate

Git, gcc, make and openmpi are required

# Clone this repository
$ git clone [email protected]:luisrmendes/dQuantumSim.git

# Go into the repository
$ cd dQuantumSim

# Compile
$ make -j5

# Run
$ mpirun --mca opal_warn_on_missing_libcuda 0 -np <number_of_processes> ./dqsim <openqasm_file>

mpirun --mca opal_warn_on_missing_libcuda 0 -np 2 ./dqsim openqasmTests/q3_grovers.openqasm

We provide an example of an implementation of Grover's algorithm using three qubits in the "openqasmTests" folder (q3_grovers.openqasm), alongside many other test examples.

# ---------- Grover's Algorithm in 3 qubits ----------

# Initialize 3 qubit circuit
qreg q[3];

h q[0];
h q[1];
h q[1];
cx q[0],q[1];
h q[1];
h q[0];
x q[0];
h q[1];
x q[1];
h q[1];
cx q[0],q[1];
h q[1];
x q[0];
h q[0];
x q[1];
h q[1];