00mjk / qubit.js

A very simple quantum computing circuit simulator.

qubit.js

A simple quantum computing circuit simulator (working in progress)
Not Finished yet!
Check this presentation.

Install

node.js

npm install qubit.js

browser

<script src="qubit.min.js"></script>

Build

npm install  
./build.sh

Usages

const {QuantumComputing} = require('qubit.js')
const qc = new QuantumComputing()
qc
  .boot(1)   // create one qubit register
  .x(0)      // apply Pauli X Gate to qubit[0]
  .measure() // measure all

console.log(qc.toQASM())    // convert to QASM code  
console.log(qc.getResult()) // print probabilities  

API

• boot(qubitRegsNum, classicRegNum=qubitRegsNum) init quantum computing circuit.
• applySingleBitMatrix(offset, matrix) apply matrix to qubits[offset].
• applyTwoBitsMatrix(control, target, matrix) apply matrix to qubits[control] and qubits[target].
• id(offset || 'all') apply Identity Gate to qubits[offset] or all qubits.
• x(offset || 'all') apply Pauli X Gate to qubits[offset] or all qubits.
• y(offset || 'all') apply Pauli Y Gate to qubits[offset] or all qubits.
• z(offset || 'all') apply Pauli Z Gate to qubits[offset] or all qubits.
• s(offset || 'all') apply Phase Gate to qubits[offset] or all qubits.
• sdg(offset || 'all') apply Phase Gate to qubits[offset] or all qubits.
• t(offset || 'all') apply Phase Gate to qubits[offset] or all qubits.
• tdg(offset || 'all') apply Phase Gate to qubits[offset] or all qubits.
• h(offset || 'all') apply Hadamard Gate to qubits[offset] or all qubits.
• cnot(control, target) apply Controlled Gate to qubits[control] and qubits[target].
• cx(control, target) apply Controlled Gate to qubits[control] and qubits[target].
• barrier(offsets=[] || 'all') the barrier prevents transformations accross this source line.
• measure(q || 'all', c) measure qubits[q] to classicReg[c] or measure one-to-one.
• getResult() get result after measurement.
• toQASM() convert to QASM 2.0 code.
• executeQASM(code) execute QASM 2.0 code.

For more information, read qubit.js source code.

References

A bunch of materials
A gentle introduction to quantum computing
An introduction to quantum computing (<- this one is very nice)

Other similar projects on Github

jsqubits
qubitjs
QuantumComputing
Quirk
quantumjs
quantumpy