[Cnqo] Extra seminar this Thursday at 3pm

[Paul Griffin]

All,

Prof Charles Adams, from Durham University, will be visiting the department tomorrow and has agreed to give a talk on recent work from his group. Title and abstract are below.


Title: Strongly interacting photons!
Time: 3pm, 20th February
Location: SUPA room
Abstract: In optics, we are familiar with the idea that photons do not interact, even in a non-linear medium the interaction is very weak. However, recently experiments have shown that by coupling optical photons to highly-excited Rydberg states [1] it is possible to realise giant optical non-linearities [2] and hence strong photon-photon interactions [3]. The photon-photon interaction is mediated by the large
dipole-dipole interactions between highly-excited Rydberg atoms. The interesting challenges ahead are whether it is possible to tailor these interactions to realise high-fidelity photonic quantum gates and hence implement all-optical quantum computing [4], or to realise strong photon-photons interactions without Rydberg excitations by reducing the length scales [5]?

[1] A. Mohapatra et al. Phys. Rev. Lett. 98, 113003 (2007).
[2] J. Pritchard et al. Phys. Rev. Lett. 105, 193603 (2010).
[3] D. Maxwell et al. Phys. Rev. Lett. 110, 103001 (2013).
[4] D. Paredes-Barato and C. S. Adams, Phys. Rev. Lett. 112, 040501 (2014).
[5] J. Keaveney et al. Phys. Rev. Lett. 108, 173601 (2012).



regards,
Griff
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