Micro-drum acts as quantum memory Memory is one of the difficult bits of quantum computing. For example, while the polarisation of a photon encodes a quantum state, it's very difficult to get photons to stay where they're put. A group of researchers from JILA – a joint institute between the University of Colorado and the National Institute of Standards and …
The example of the platter include the resonant antenna and is about 150 microns square. It's visible to the naked eye!
Without going to plasmons (surface electrons that can transform from and to photons (with a loss of linked quantum uncertainty-entanglement) it is difficult to see this system getting smaller and therefor sets serious limits on the performance of a quantum computer using this form of storage.
"The example of the platter include the resonant antenna and is about 150 microns square. It's visible to the naked eye!"
Would that not tend to depend on the frequency of the exciting radiation?
It's not mentioned in the article other than being "microwave," but that covers a pretty broad range. Then you could switch to light instead.
This is proof of concept tech. They probably designed it to use whatever hardware they already had. IIRC 2.4Ghz (microwave oven) and 10GHz seem to be popular frequencies for this but microwaves go up to the 100s of GHz before getting into the borderline THz and quasi optical methods.
This is starting to look a bit more like a digital quantum computer than some kind of analog device for solving a fixed class of problems.
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