Archive for September, 2013

On-chip cavity quantum phonodynamics and acceptor qubits in silicon

September 8th, 2013  |  by  |  published in All, Featured, Highlights, Nanotechnology, Phonitons, Quantum Computing, Research

On-chip cavity quantum phonodynamics and acceptor qubits in silicon

We show how long-lived and tunable acceptor impurity states in silicon nanomechanical cavities can play the role of a matter non-linearity for coherent phonons just as, e.g., the Josephson qubit plays in circuit-QED.

Preprint: Bottom-up superconducting and Josephson junction devices inside a Group-IV semiconductor

September 2nd, 2013  |  by  |  published in All, News, Preprints

Preprint: Bottom-up superconducting and Josephson junction devices inside a Group-IV semiconductor

We propose superconducting devices made from precision hole-doped regions within a silicon (or germanium) single crystal. We analyze the properties of this superconducting semiconductor and show that practical superconducting wires, Josephson tunnel junctions or weak links, SQUIDs, and qubits are realizable. This work motivates the pursuit of bottom-up superconductivity for improved or fundamentally different technology and physics.

Tahan Research

http://research.tahan.com/

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