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.
Archive for September, 2013
On-chip cavity quantum phonodynamics and acceptor qubits in silicon
September 8th, 2013 | by admin | published in All, Highlights, Nanotechnology, Phonitons, Quantum Computing, Research
Preprint: Bottom-up superconducting and Josephson junction devices inside a Group-IV semiconductor
September 2nd, 2013 | by admin | published in All, News, Preprints
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.