Communications of the ACM
Diamonds Are a Quantum Computer's Best Friend
Researchers already are conducting experiments with nitrogen atoms in diamonds.
Credit: Vienna University of Technology
Researchers at the Vienna University of Technology (TU Wien), the National Institute for Informatics, and NTT Basic Research Labs have proposed a new architecture for quantum computing. The architecture is based on microscopic defects in diamond, which the researchers say is better suited to be miniaturized, mass-produced, and integrated on a chip than previously suggested quantum computing concepts.
The architecture involves nitrogen atoms that can occupy two different spin states being injected into a small diamond. Every nitrogen defect is trapped in an optical resonator made of two mirrors and the photons are coupled to the quantum system via glass fibers.
The method makes it possible to read and manipulate the state of the quantum system without destroying the quantum properties of the spins in the diamond. Each system can store one quantum bit of information.
"This architecture has great potential for miniaturization and mass production," says TU Wien's Michael Trupke.
The researchers have begun to create a small-scale prototype of the new architecture.
"We have the great advantage of being able to collaborate with a number of internationally renowned research teams in materials research and quantum technology right here at TU Wien," says TU Wien professor Jorg Schmiedmayer.
From Vienna University of Technology
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