Quantum Bayesian Networks

March 29, 2016

Qubiter on the brink of doing Quantum Chemistry

Filed under: Uncategorized — rrtucci @ 6:35 pm

On behalf of the artiste-qb.net company, I am pleased to announce that Qubiter now has a new class called PhaseEstSEO_writer.py that endows it with the superpower of being able to generate and simulate quantum circuits for quantum phase estimation.

The quantum Phase Estimation circuit (PEC) was invented in 1995 by Kitaev. Since then, it has found many applications in quantum computing. Microsoft Liqui|>, the main competitor of Qubiter, uses PEC to find the ground state of molecules.

In fact, Liqui|> can generate many other circuits besides PEC, but most of them are not very commercially viable. For example, Liqui|> can generate quantum error correction circuits, but error correction will most likely be done by the hardware manufacturers, so QC programmers won’t need to implement it via Liqui|> in their circuits. Liqui|> also does Shor’s algo, but I don’t think Shor’s algo will be a big money maker, because it requires thousands of qubits, so it will be one of the last applications to be implemented on a QC. By the time it is implemented, post quantum crypto, which is impervious to it, will have been in general use for many years.

So most of the circuits that Liqui|> can generate & simulate will never be commercially viable, but those for doing quantum chemistry probably will be.

The Liqui|> team claims to have used experimentation with Liqui|> to reduce by a factor of a thousand the size of their QC circuit for finding the ground state of molecules with PEC. They claim that their new, optimized circuit will give an answer in an hour of running on a gate model QC, once those beasts arrive. Such calculations would take billions of years for a classical computer to perform, they claim.

The Liqui|> authors like Krysta Svore seem well aware that Quantum Chemistry is one of the most commercially viable and potentially lucrative applications of Liqui|>. You can almost see the dollar signs in their beady eyes when they speak about quantum chemistry.

But Qubiter is throwing a spanner into their nefarious plans.

Microsoft Liqui|> is closed source and heavily patented. Also, it is written in a very unpopular language F#. Qubiter, on the other hand, is open source and written in the super popular language Python.

And now Qubiter allows everyone, not just Microsoft egg heads, to do QC quantum chemistry too.

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