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03/13/2018 - 03/13/2018 | Klosterneuburg

IST Lecture: Quantum Communication

Anton Zeilinger, one of Austria's most well-known scientists, will give a public and comprehensible lecture on the current state of quantum communication. The lecture will take place at the Institute of Science and Technology Austria (IST Austria) as part of the IST Lecture series.

After more than two decades of development, quantum communication has now reached a rather advanced level. The development clearly points towards a future quantum internet. After reviewing some of the early experiments, particularly on quantum cryptography and on long-distance quantum teleportation, Zeilinger will give a brief overview of the current state with focus on quantum communication with individual photons. Parallel to the communication experiments themselves there have been an increasing number of tests of quantum entanglement as signified by the Einstein-Podolsky-Rosen Paradox and Bell's Inequality. Such experiments, besides closing any possible loopholes for a local realist, i.e. classical, view of the world, also provide confirmation that unconditionally secure quantum cryptography is possible. The most recent experiments include long-distance quantum teleportation, including long-distance entanglement swapping, which is the teleportation of an entangled state. Such experiments are considered to be a basic ingredient of future quantum repeaters between quantum computers. Further, for most quantum communication experiments, a qubit, i.e. a two-state quantum system, is the basic carrier of information. In recent experiments, it has been shown that this limit can be broken by high-dimensional states, particularly multi-mode states, and by photon states which carry orbital angular momentum. Such techniques have also been tested over long distances in free space despite expectations that atmospheric fluctuations might make the communication impossible. Most recently, the Chinese quantum satellite Micius has established various quantum techniques for communication from ground to satellite or between ground stations. Of those, Zeilinger will focus particularly on intercontinental quantum key distribution, as recently established. The long-term vision is a world-wide network combining quantum satellites and large-scale ground state fiber networks.

Free shuttle buses are provided to / from campus:
Regular IST Austria shuttle #142: 4:17 pm from U4 Heiligenstadt/public bus stop (return from IST Austria Campus at 6:54 pm)
Special IST Lecture shuttle 1: 4 pm from Schwedenplatz (return from IST Austria campus at 7:15 pm) – register online!

Speaker
Anton Zeilinger, Vienna Center for Quantum Science and Technology (VCQ), Faculty of Physics, University of Vienna & Institute of Quantum Optics and Quantum Information (IQOQI), Austrian Academy of Sciences

Time
Tuesday, March 13, 2018 05:00pm - 06:00pm

Location
Raiffeisen Lecture Hall, Central Building

Information on participating / attending:
please register
https://ist.ac.at/index.php?id=2480&event_id=942

Date:

03/13/2018 17:00 - 03/13/2018 18:00

Registration deadline:

03/05/2018

Event venue:

Raiffeisen Lecture Hall
Am Campus 1
3400 Klosterneuburg
Lower Austria
Austria

Target group:

all interested persons

Relevance:

regional

Subject areas:

Physics / astronomy

Types of events:

Presentation / colloquium / lecture

Entry:

01/29/2018

Sender/author:

Dr. Elisabeth Guggenberger

Department:

Communications and Events

Event is free:

yes

Language of the text:

English

URL of this event: http://idw-online.de/en/event59542


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