The Silicon Qubit Environment & Interface Program, led by Professor Sven Rogge at UNSW Sydney, aims to couple qubits in a robust manner from the atomic nano-meter length scale to macroscopic coupling via photons.

On the atomic scale we optimise the coupling between donor atoms while taking the complex nature of their charge density in silicon into account. To achieve macroscopic coupling we engineer electric-dipole coupling to spin qubits.

This enables direct qubit-qubit coupling at the 100nm length scale and the coupling to microwave resonators that allows for chip scale coupling.

Finally, an optical interface to spin qubits is investigated for long distance coupling based on rare-earth ions in silicon and integrated single-photon detectors in collaboration with ANU, Griffith, RMIT, and UNSW Canberra.

Featured publications

view all
A solid-state quantum microscope for wavefunction control of an atom-based quantum dot device in silicon B. Voisin, J. Salfi, D. D. St Médar, B. C. Johnson, J. C. McCallum, M. Y. Simmons, S. Rogge Nature Electronics, 6, 409–416 (2023)
Observing Er3+Sites in Si with an In Situ Single-Photon Detector IR Berkman, A Lyasota, GG de Boo, JG Bartholomew, BC Johnson, JC McCallum, BB Xu, SY Xie, RL Ahlefeldt, MJ Sellars, CM Yin, S Rogge Physical Review A, 19, 014037 (2023)
Certified random-number generation from quantum steering DJ Joch, S Slussarenko, YL Wang, A Pepper, SY Xie, BB Xu, IR Berkman, S Rogge, GJ Pryde Physical Review A, 106, L050401 (2022)
Zeeman and hyperfine interactions of a single Er-167(3+) ion in Si Phys. Rev. B 105, 235306 – Published 27 June 2022 Physical Review B, 105, 235306 (2022)
Shallow dopant pairs in silicon: An atomistic full configuration interaction study Phys. Rev. B 105, 155158 Physical Review B, 105, 155158 (2022)
Valley population of donor states in highly strained silicon Materials for Quantum Technology, 2, 025002 (2022)