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2009-02-26

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Prof. Anton Zeilinger visited the Institute of Physics

 

Belgrade (SRB), February 26, 2009. World-renowned pioneer in quantum information science and an experimental realizator of quantum teleportation with photons, prof. Anton Zeilinger, paid a visit to the Serbian Academy of Sciences and Arts (SASA) - being the Academy's Foreign Member - as well as to the Institute of Physics of the University of Belgrade, on 2009-02-24 (Tuesday) and 2009-02-25 (Wednesday).

Professor Anton Zeilinger is currently at following positions:

The morning and the early afternoon of 2009-02-24 (Tuesday), prof. Zeilinger, accompanied by prof. Časlav Brukner from the same group, spent in friendly talk with scientists and researchers of the Institute of Physics (Figs 215-01 – 215-04).

 


Fig. 215-01. Prof. Zeilinger under the lights of the holography laboratory.


Fig. 215-02. Professors Zeilinger and Brukner in the H1 room.


Fig. 215-03. Prof. Zeilinger with prof. Jelenković in the Q1 room.


Fig. 215-04. Professors Lukić, Brukner, Zeilinger and Jelenković (from left to right) in the Q1 room.

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The professors patiently listened to and curiously watched current research activities in the Institute's Photonics Center and gave considerate remarks (Figs 215-05 – 215-08).

 


Fig. 215-05. Prof. Pantelić explains the dimension of his setup.


Fig. 215-06. Prof. Jelenković explains the dimension of his setup.


Fig. 215-07. Curiousity is a driving force of research.


Fig. 215-08. An opinion.

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The professors compassionately shared the experience of scientific life with the members of the Photonics Center, particularly with young researchers (Figs 215-09 – 215-12).

 


Fig. 215-09. Science warms scientists.


Fig. 215-10. Conversation.


Fig. 215-11. Young researcher B. Lindén (standing) explains the direction of his research.


Fig. 215-12. Prof. Brukner (sitting, right) accompanied with young researchers. Standing, from left to right: S. Nikolić, M. Popović (S. Ćuk and M. Mijailović in the background) and B. Lindén; sitting, from left to right: M. Radonjić and Č. Brukner.

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In the evening (2009-02-24 T 18:00 +01), professor Zeilinger kindly gave a talk "Quantum Puzzles and Future Information Technologies" (in English) in the Conference Hall of the SASA.

On Wednesday, 2009-02-25 T 11:00 +01, in the Library Hall of the Institute of Physics, professor Zeilinger generously gave the details of his group's current research, presenting a lecture entitled "Long-Distance Entanglement and Quantum Cryptography" (in English) (Figs 215-13 and 215-14).

 


Fig. 215-13. Prof. Dragan Popović, the director of the Institute of Physics (holding the paper), introduces prof. Anton Zeilinger to the audience in the Library Hall of the Institute of Physics.


Fig. 215-14. The audience in the Library Hall of the Institute of Physics listened to the lecture of prof. Zeilinger with great interest.

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The experiment of the free-space transportation of entangled photons over the distance of 144 km, between La Palma and Tenerife on Canary Islands [215-01], was explained. The results show no decoherence during photon's 0.5 ms long travel through the air. The attenuation corresponds to estimated loss in a two-photon quantum communication between satellite and ground receivers, which is encouraging for future quantum communication scenarios. Also, the professor big-heartedly presented the results of his group's experiment which closes the loopholes of the Bell's inequality [215-02]. The experiment is the first one to close more than one of the three crucial loopholes at the same time – the locality and the freedom-of-choice loopholes.

Acknowledgments

Photographed by DV; photos enhanced by siteEditor.

References

[215-01] "High-fidelity transmission of entanglement over a high-loss freespace channel" at ArXiv [Accessed: 2009-02-25]
[215-02] "Violation of local realism with freedom of choice" at ArXiv [Accessed: 2009-02-25]

Sources and further reading

Titles of affiliations

 

lang=en
lang=(original)
Serbian Academy of Sciences and Arts (SASA) (sr-Latn) Srpska akademija nauka i umetnosti (SANU)
Institute of Physics of the University of Belgrade (sr-Latn) Institut za fiziku Univerziteta u Beogradu
Faculty of Physics of the University of Vienna (de) Fakultät für Physik der Universität Wien
Institute for Quantum Optics and Quantum Information (de) Institut für Quantenoptik und Quanteninformation (IQOQI)
Austrian Academy of Sciences (de) Österreichische Akademie der Wissenschaften (ÖAW)

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N 20090226 1 ¦̅  215

Aleksander Kovačević
2009-02-26

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