[time-nuts] silicon/silicon oxide based solid state atomic clocks? (was: Flawed diamonds promise sensory perfection)

[Attila Kinali]

On Sat, 11 May 2013 13:50:23 -0700
Brooke Clarke <brooke at pacific.net> wrote:

> The first article at R&D magazine cites another article in Nature, but it's a $ article.
> http://www.rdmag.com/news/2013/05/flawed-diamonds-promise-sensory-perfection
> 
> Solid-state electronic spin coherence time approaching one second
> http://www.nature.com/ncomms/journal/v4/n4/full/ncomms2771.html

Has anyone seen/heard about something similar done with silicon or
silicon oxide? I guess that a silicon/si-ox based system would be
a lot cheaper to produce, given todays semiconductor industry.

The only thing i could dig out that goes into this direction is [1].
But that looks at it from a quantum computing point of view.

I guess silicon cannot be used the way diamond is used (ie using
a double resonance system) because it's not transparent, and probably
too metallic already. Silicon oxide on the other hand is transparent
and a very good isolator, hence the electrons would be confined to
their atoms. But googling for "silicon oxide", "defects" and "spectroscopy"
i only get results from defects assesment in the semiconductor production.


			Attila Kinali

[1] "Atomic clock transitions in silicon-based spin qubits", 
by Wolfowicz et all, 2013, http://arxiv.org/abs/1301.6567

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