Thanks, Mike. Yes, I ran across anyons in my Google searching, so I'll have do some reading up on them. Tim Byrnes also looks like an interesting fellow, so I'll check out his papers. BTW, I forgot to mention that among their other features, photons can exhibit quantum features at *room temperature* -- e.g., polarization, beam splitting & combining, interference, etc. (Well, at least room temperature defined by standard thermometers.) Also, BTW, pure *photon gasses* look like an interesting & elegant model, though perhaps not (yet?) for QC. I wonder if they can be "bottled" within an optical fiber... I'm going to try to find a version of Carnot's Engine using a photon gas as its working fluid. At 09:05 PM 11/27/2018, Mike Stay wrote:

http://nyu.timbyrnes.net/research/quantum-information-using-bose-einstein-co...

There's a third option in two dimensions, the anyon. One promising model of quantum computation involves braided anyons, since relatively large perturbations won't change the braiding. https://en.wikipedia.org/wiki/Anyon#Non-abelian_anyons

On Tue, Nov 27, 2018 at 8:42 PM Henry Baker <hbaker1@pipeline.com> wrote:

...

Is it just me, or does anyone else think that *bosons* are a better choice for Quantum Computation than *fermions* ?

With bosons, a QC engineer has the option of putting a large number of bosons (i.e., a large amount of energy) into every state, while with Fermions, you're dealing with a single, quite small amount of energy state. Not a lot of design space to work with.

We've also got lots and lots of experience with electrical and magnetic fields and electromagnetic photons.

Yes, photons are "large" compared with the feature sizes enabled by electrons, but on the other hand, we're now approaching the ~ 1 nmeter size needed for quantum dots for visible light photons.

What am I missing here?

-- Mike Stay - metaweta@gmail.com http://math.ucr.edu/~mike https://reperiendi.wordpress.com