hadeweka / hdwquantum

Very basic quantum computer simulation in Ruby

HDWQuantum

Very basic quantum computer simulation in Ruby, can be used for arbitrary complex quantum computation simulations. Not very fast, however.

Instructions and informations

See 'HDWQuantumTest.rb' for a simple example. Initialize a quantum register with the 'Quantum_Register' class by using:

• qreg = Quantum_Register.new(size, state)

Here, size is the number of qubits in the register and state the initial state as a binary number. You can apply quantum operations using:

• qreg.apply_one_qubit_gate(gate, bit)
• qreq.apply_two_qubit_gate(gate, first bit, second bit)
• ...

The gate can be any fitting gate (see 'HDWQuantum.rb' for a list), and the bits are the qubit positions (highest binary bit is defined as 1). A measurement can be done with:

• qreq.measure

And you can cheat by yielding the state vector by:

• qreg.output_state_vector

However, this would not be possible on a real quantum computer and is only helpful for debugging or obtaining a probability table.

What can be done?

Anything you want! Implement own gates by extending the 'Quantum_Gate' module, play around with them, or try to implement special algorithms! Technically, this simulation should be quantum Turing complete ;-). This project was done by me some time ago as a base for a quantum poker game, which I eventually abandoned. Maybe you want to do something like that? It's Ruby code, but porting it to C or any other programming language should not prove too difficult.