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PhD Position: Rare-earth based photonic devices for quantum information processing


   School of Physics

  Prof Sven Rogge  Applications accepted all year round  Competition Funded PhD Project (Students Worldwide)

About the Project

Description.

The University of New South Wales and the Centre for Quantum Computation and Communication Technology seeks enthusiastic candidates for a PhD position in the field of rare-earth ions based experimental photonics for quantum information processing (https://www.cqc2t.org/phd-position-rare-earth-based-photonic-devices-for-quantum-information-processing/). Rare-earth ions, such as Erbium (Er), are now considered as promising candidates for quantum computation applications due to their extraordinary long spin and optical coherence times at cryogenic temperatures [1]. Erbium is especially attracting as it has a narrow spin and optical linewidths, negligible nonradiative losses and emits photons at the telecommunication wavelength. Integrating single erbium ions with Si- based photonic nanocavities is especially attractive as it will allow realizing single photon sources that can be used for cluster state generation, a primary source for measurement-based quantum computing [2, 3].

Your role.

The PhD candidate will work on integrating Er ions with photonic nanostructures. A near future result of this effort will be an array of sources of pure indistinguishable photons operating at the telecommunication wavelength. Er-based single photon sources will be used for quantum optics experiments relevant to optical quantum computing, i.e., cluster state generation [4, 5] and optical boson sampling [6]. The candidate will carry out clean room nanofabrication, spectroscopy, theory and numerical modelling.

Environment.

The PhD candidate will benefit from the world-recognized expertise on single ion-based quantum devices and quantum electronics. The candidate will have an access to a range of unique methods developed at Rogge’s lab, i.e., a highly sensitive spectroscopy technique based on a sample on single photon detector approach. She/he/they will develop strong skills on low-temperature spectroscopy, device engineering and nanofabrication. Strong international collaborations (USA, Europe) are maintained with groups on experimental and theoretical sides.

Criteria.

Enthusiastic masters or honors graduate with knowledge in semiconductors, optics, quantum mechanics and condensed matter physics. Knowledge of equity and diversity principles.

How to apply

For application or any further information, please contact Dr. Alexey Lyasota (); Prof. Sven Rogge ().


Funding Notes

International Research Scholarships (View Website)

References

[1] J. R. Everts, Phys. Rev. A 99, 063830 (2019).
[2] R. Raussendorf and H. J. Briegel. Phys. Rev. Lett. 86, 5188–5191 (2001).
[3] P. Walther et al. Nature 434, 169–176 (2005).
[4] D. Istrati et al. Nat. Commun. 11, 1–8 (2020).
[5] I. Schwartz et al. Science 354, 434–437 (2016).
[6] J. C. Loredo et al. Rev. Lett. 118, 130503 (2017).

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