Dresden 2011 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 11: Quantum Information: Atoms and Ions 1

Q 11.2: Vortrag

Montag, 14. März 2011, 15:00–15:15, BAR Schön

Single atom-photon interfaces with strongly focused optical modes — •Gleb Maslennikov¹, Syed Abdullah Aljunid¹, JianWei Lee¹, Martin Paesold², Dao Hoang Lan¹, Kadir Durak¹, Brenda Chng¹, and Christian Kurtsiefer¹ — ¹Centre for Quantum Technologies / Dept. of Physics, National University of Singapore — ²ETH, Zurich

Interaction of light with single atoms forms the basic building block in many scenarios for the exchange of quantum information between different physical carriers, for the implementation of simple quantum logic devices, and for a better understanding of localizable single photon states. Complementary to the well-known approach of optical field enhancement with cavities we investigate field enhancement due to strong focusing of an optical mode. With this, we have seen significant extinction, optical phase shifts, which eventually should allow for significant interaction between photons [1-3]. We discuss our experimental progress on atom localization, atomic excitation probabilities under weak optical pulses and an anaclastic cavity-lens geometry for optical field enhancement at the atom with a very high optical coupling between probing and detection modes.

[1] M. K. Tey, et al., Nature Physics 4 924 (2008)
[2] S.A. Aljunid et al., Phys. Rev. Lett. 103, 153601 (2009)
[3] S.A. Aljunid et al., arXiv:1006.2191 (2010)