Quantum Bayesian Networks

March 22, 2016

First version of Qubiter (a quantum computer simulator) is out. It says: “Welcome, my navigator. Where do you want me to take you next?”

Filed under: Uncategorized — rrtucci @ 4:44 pm

artiste-qb.net has just uploaded at GitHub its first version of Qubiter, a quantum computer simulator, under the BSD license and written in Python.

It’s saying to you: “Welcome, Navigator. Where do you want me to take you next?”

dog-amazed

nerd-destiny

Over the last 20 years, dozens of quantum computer simulators (for gate model, aka quantum circuit QC) have been released. Here is a partial list. So what makes this one special?

Let me compare Qubiter with Microsoft’s very famous quantum simulator called Liqui|>.

  • Liqui|> is closed source (and heavily patented), Qubiter is open source under BSD license
  • Liqui|> is written in F#, Qubiter is written in Python. User base of Python is ~ 100 times bigger than that of F#. And believe me, programmers are very savvy consumers of programming languages.
  • Dave Wecker (rhymes with wrecker), chief architect of Liqui|> , has been quoted as saying that he estimates Liqui|> has about 30,000 lines of code. Qubiter currently has less than a 1000, and does all the basics and much more. So tell me, what would you prefer to have to grok, 30,000 or 1,000 lines of code?

I hope you enjoy it. Or as my grandma used to say,

Stai zitto e mangia!!

4 Comments »

  1. Very happy to see how this turned out! Flows all very naturally in Python.

    Comment by Quax — March 23, 2016 @ 2:50 am

  2. Thanks Quax. Numpy support for tensors is very good, and tensor products are ubiquitous in quantum mechanics, so I agree, Python is a natural for a QC simulator.

    Comment by rrtucci — March 23, 2016 @ 3:30 am

  3. It’s okay. They are writing software that is specific to their platform. My software is more platform independent. Besides, my software is better😉 and open source and in Python, all good selling points.

    Other advantages we have, in my opinion:

    we are a real company, not a bunch of academics trying to do a business on the side,

    we do only software, not both software and hardware like them

    Comment by rrtucci — March 27, 2016 @ 4:27 am


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