SILICON QUBIT ENVIRONMENT AND INTERFACE

This program focusses on the qubit coupling with the environment and an optical interface which are two highly interactive research lines. The goal is to understand the physics of the qubit coupling with the environment to understand decoherence pathways and to control. The control over the electron wavefunction [1] requires interfaces which lead to the loss of bulk properties of the qubit due to physical processes like the valley-orbit coupling, exchange, and many-body effects in coherent coupling [2]. The atomistic understanding of the interaction between the environment and the qubit is essential for quantum computation since it allows the achievement of optimal coherence times and optimal robustness of the quantum gates. Optical addressing of electrons in Si is nontrivial but vastly beneficial due to the gained flexibility and unprecedented high resolution which we just have demonstrated [3].


Optical fiber delivering light to dopants embedded in a silicon nano transistor.

Recent Publications

[1] J. Salfi, J. A. Mol, R. Rahman, G. Klimeck, M.Y. Simmons, L.C L. Hollenberg and S. Rogge,"Spatially resolving valley quantum interference of a donor in silicon", Nature Materials 13, 605 (2014).

[2] J. Verduijn, C.G. Tettamanzi, S. Rogge, “Wave Function Control over a Single Donor Atom”. Nano Letters 13(4), 1476 (2013).

[3] J. Verduijn, R.R. Agundez, M. Blaauboer, S. Rogge, “Non-local coupling of two donor-bound electrons”. New Journal of Physics 15(3), 033020 (2013).

[4] C.M. Yin, M. Rancic, G.G. de Boo, N. Stavrias, J.C. McCallum, M.J. Sellars, and S. Rogge, “Optical addressing of an individual erbium ion in silicon”. Nature 497, 91-94 (2013).

Employment

Quantum Transport Based on Scanning Tunnelling Spectroscopy (Postdoctoral Position B1)

Quantum State Tomography of Dopants in Si Nano Devices (Postdoctoral Position B1)

PhD Vacancies and Scholarships

We look for enthusiastic PhD candidates for research projects within the ‘Silicon Qubit Environment and Interface' Program at the UNSW node of the Australian Research Council Centre of Excellence for Quantum Computation and Communication Technology.

Prestigious Scholarship are available which are typically valued at $24,000 per annum with a supplement of up to $5000 per annum for first class honours or equivalent and is available for up to three-and-a-half years. The successful scholarship applicant will be expected to enroll for a PhD degree and should have an honours degree (level 1 or 2A) or equivalent, in Physics, Applied Physics, Material Science or a related subject. International applicants with a Masters degree are strongly encouraged to apply.

Interested candidates should contact Professor Sven Rogge to discuss possible projects and the application procedure. Please email an application containing a complete resume including telephone numbers, email address, and contact details of three academic referees to: Professor Sven Rogge You will get a confirmation within a few days. The scholarships will remain open until filled.