Artur Ekert

Artur Konrad Ekert (born September 19, 1961 in Breslau ) is a Polish-British physicist who deals with quantum computer science .

Artur Ekert

Life

Ekert studied physics and mathematics at the Jagiellonian University in Kraków , where he graduated in 1985. From 1987 he continued to study at Imperial College London and at the Wolfson College of the University of Oxford , where he graduated 1,991th He was then a Research Fellow at Merton College , Oxford, from 1993 head of the quantum informatics group at the Clarendon Laboratory and from 1998 Professor of Physics at Oxford (and Fellow at Keble College ). From 2002 he was Leigh Trapnell Professor of Quantum Physics at Cambridge University , Director of the Center for Quantum Informatics there and Fellow of King's College. At the same time he was a professor in Singapore from 2002 . Among other things, he was visiting scholar at the University of Innsbruck (1993, 1998) with Anton Zeilinger .

Ekert is a British and Polish citizen.

plant

In his dissertation Ekert showed a new (in principle absolutely secure) possibility of quantum cryptography ( key distribution protocol ) with quantum entanglement . He carried out experiments that showed the feasibility in principle in collaboration with John Rarity and Paul Tapster from the DRA ( Defense Research Agency ) in Malvern . In 1999 , Anton Zeilinger and his colleagues implemented the Ekert protocol over a distance of 360 m . The Ekert protocol or variants thereof are for the proposals, the device-independent secure key distribution ( device-independent security ) have the objective.

Ekert also provides fundamental work on quantum computers , quantum algorithms and quantum communication , in particular with regard to the influence of and prevention of decoherence, as well as several frequently cited reviews.

Honors and memberships

In 1995 he received the Maxwell Medal from the Institute of Physics , of which he has been a Fellow since 2004. In 2007 he received the Hughes Medal from the Royal Society . From 1993 to 2000 he was Howe Fellow of the Royal Society. In 2004 he received the Descartes Prize of the EU with others . In 2016 he was elected a member of the Royal Society and Academia Europaea and received the International Quantum Communication Award .

Since 2019 the media group Clarivate has counted him among the favorites for a Nobel Prize ( Clarivate Citation Laureates ).

Fonts (selection)

• A. Ekert: Quantum cryptography based on Bell's theorem . In: Phys. Rev. Lett. tape 67 , 1991, pp. 661 , doi : 10.1103 / PhysRevLett.67.661 .
• with John G. Rarity, Paul R. Tapster, G. Massimo Palma: Practical quantum cryptography based on two-photon interferometry . In: Phys. Rev. Lett. tape 69 , 1992, pp. 1293 , doi : 10.1103 / PhysRevLett.69.1293 .
• with Charles H. Bennett , G. Brassard : Quantum cryptography . In: Scientific American . tape 267 , no. 4 , 1992, pp. 50-57 , JSTOR : 24939253 .
• with M. Zukowski, A. Zeilinger, MA Horne: Event-ready-detectors Bell experiment via entanglement swapping . In: Phys. Rev. Lett. tape 71 , 1993, p. 4287-4290 , doi : 10.1103 / PhysRevLett.71.4287 .
• Adriano Barenco, David Deutsch , Artur Ekert, Richard Jozsa : Conditional Quantum Dynamics and Logic Gates . In: Phys. Rev. Lett. tape 74 , 1995, pp. 4083 , doi : 10.1103 / PhysRevLett.74.4083 , arxiv : quant-ph / 9503017 .
• David Deutsch, Artur Ekert, Richard Jozsa, Chiara Macchiavello, Sandu Popescu , Anna Sanpera: Quantum Privacy Amplification and the Security of Quantum Cryptography over Noisy Channels . In: Phys. Rev. Lett. tape 77 , 1996, pp. 2818 , doi : 10.1103 / PhysRevLett.77.2818 , arxiv : quant-ph / 9604039 .
• G. Massimo Palma, Kalle-antti Suominen, Artur Ekert: Quantum computers and dissipation . In: Proc. Roy. Soc. A . tape 452 , no. 1946 , 1996, pp. 567-584 , doi : 10.1098 / rspa.1996.0029 , arxiv : quant-ph / 9702001 .
• with V. Vedral, A. Barenco: Quantum networks for elementary arithmetic operations . In: Phys. Rev. A . tape 54 , 1996, pp. 147 , doi : 10.1103 / PhysRevA.54.147 , arxiv : quant-ph / 9511018 .
• Artur Ekert, Richard Jozsa: Quantum computation and Shor's factoring algorithm . In: Rev. Mod. Phys. tape 68 , 1996, pp. 733 , doi : 10.1103 / RevModPhys.68.733 .
• with SF Huelga, C. Macchiavello, T. Pellizzari, MB Plenio , JI Cirac : Improvement of frequency standards with quantum entanglement . In: Phys. Rev. Lett. tape 79 , 1997, pp. 3865 , doi : 10.1103 / PhysRevLett.79.3865 , arxiv : quant-ph / 9707014 .
• R. Cleve, A. Ekert, C. Macchiavello, M. Mosca: Quantum algorithms revisited . In: Proc. Roy. Soc. A . tape 454 , no. 1969 , 1998, pp. 339-354 , doi : 10.1098 / rspa.1998.0164 , arxiv : quant-ph / 9708016 .
• Editor with Dirk Bouwmeester , Anton Zeilinger: The Physics of Quantum Information: Quantum Cryptography, Quantum Teleportation, Quantum Computation . Springer, 2000.
• with JA Jones, V. Vedral, G. Castagnoli: Geometric quantum computation using nuclear magnetic resonance . In: Nature, volume 403 . 2000, p. 869-871 , doi : 10.1038 / 35002528 , arxiv : quant-ph / 9910052 .
• with M. Christandl, N. Datta, AJ Landahl: Perfect state transfer in quantum spin networks . In: Phys. Rev. Lett. tape 92 , 2004, p. 187902 , doi : 10.1103 / PhysRevLett.92.187902 , arxiv : quant-ph / 0309131 .

Web links

Commons : Artur Ekert  - Album with pictures, videos and audio files

• Homepage at the Mathematical Institute, Oxford University. Retrieved February 23, 2020 . 
• Homepage at Merton College, Oxford University. Retrieved January 16, 2018 . 
• Homepage at the NUS. Retrieved February 23, 2020 . 

Individual evidence

1. ^ A. Ekert: Quantum cryptography based on Bell's theorem . In: Phys. Rev. Lett. tape 67 , 1991, pp. 661 , doi : 10.1103 / PhysRevLett.67.661 .
2. ↑ John G. Rarity, Paul R. Tapster, G. Massimo Palma: Practical quantum cryptography based on two-photon interferometry, Physical Review Letters Vol. 69, 1992, p. 1293
3. ↑ Stefano Pironio, Valerio Scarani, Thomas Vidick: Focus on Device Independent Quantum Information, New J. Phys., Volume 18, 2016, p. 100202, online
4. ↑ Umesh Vazirani, Thomas Vidick: Fully device independent quantum key distribution . In: Phys. Rev. Lett. tape 113 , 2014, pp. 140501 , doi : 10.1103 / PhysRevLett.113.140501 , arxiv : 1210.1810 .