US Patent 7546000 - Color center quantum computer

http://www.freepatentsonline.com/7546000.html

This patent from HP proposes a diamond lattice structure with atomic vacancies as a basis for quantum computers. Claim 1 reads:

1. A node of a quantum computer architecture, the node comprising:

a first photonic device configured to transmit electromagnetic waves;

a color center embedded in diamond and coupled to the first photonic device; and

a switch located between the first photonic device and a bus waveguide, and the switch configured to selectively control transmission of electromagnetic waves between the bus waveguide and the color center.