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Silicon Qubit Environment
Electronic and nuclear spin of dopants in macroscopic samples of bulk silicon have recently been shown to have exceptional coherence properties. This program seeks to develop an understanding of the physical behaviour of dopants as functional elements in a nanostructured environment envisioned for nanoelectronics and quantum computation.
This includes developing methods to gain control over the electronic wavefunctions of single donors near interfaces which render them manifestly different from bulk dopants, examining associated valley-orbit effects, and observing the consequences for electronic coherence. It also includes developing an understanding of coherent coupling and exchange among dopants necessary to exert external control over multi-electron quantum states. Such problems are of central importance to both for pair-wise (mutual) entanglement as well as coherent transport of spin in current proposals for quantum computation.
Recent output in this area includes:
 Verduijn, J., Tettamanzi, G. C., & Rogge, S. (2013). Wave Function Control over a Single Donor Atom. Nano Letters, 13(4), 1476.
 Verduijn, J., Agundez, R. R., Blaauboer, M., & Rogge, S. (2013). Non-local coupling of two donor-bound electrons. New Journal of Physics, 15(3), 033020.
 Mol, J. A., Salfi, J., Miwa, J. A., Simmons, M. Y., & Rogge, S. Interplay between quantum confinement and dielectric mismatch for ultra-shallow dopants. Accepted for publication in Physical Review B.
 Mol, J. A., Salfi, J., Rahman, R, Miwa, J. A., & Rogge, S. Interface-split Kramers doublets for acceptor-based qubits. Submitted.
 Mol, J. A., Salfi, J., Rogge, S. Quantum Computing with Acceptor-based Qubits, Australian Provisional Patent Application 2013900975 (2013)