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{{Short description|Polish-British physicist (born 1961)}}{{EngvarB|date=July 2017}}{{Use dmy dates|date=July 2017}}

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|image = Professor Artur Ekert FRS (cropped).jpg|caption = Ekert in 2016|birth_name = Artur Konrad Ekertdf=yes9|19}}|birth_place = Wrocław, Poland|death_date =|death_place =|citizenship =|nationality = Polish, British|fields = PhysicsCryptography|workplaces = Merton College, OxfordUniversity of OxfordNational University of Singapore|alma_mater = Jagiellonian University (MSc) University of Oxford (PhD)|thesis_title = Correlations in quantum optics|thesis_url =weblink|thesis_year = 1991Keith Burnett David Deutsch Peter Knight (scientist)>Peter Knight|academic_advisors =Patrick Hayden (scientist)>Patrick HaydenMichele Mosca{{MathGenealogy|98649}}|notable_students =Quantum cryptography(Quantum_key_distribution#E91_protocol:_Artur_Ekert_(1991)>E91 protocol)Swap test|influences =|influenced =

• Maxwell Medal and Prize (1995)
• Descartes Prize (2004)
• Hughes Medal (2007)
• Fellow of the Royal Society (2016)WEB, Professor Artur Ekert FRS, royalsociety.org, London, 2016, Anon,weblink
• Micius Quantum Prize (2019)}}|website = {{Official website}}

|ethnicity =}}Artur Konrad Ekert {{post-nominals|country=GBR|FRS}} (born 19 September 1961) is a British-Polish professor of quantum physics at the Mathematical Institute, University of Oxford, professorial fellow in quantum physics and cryptography at Merton College, Oxford, Lee Kong Chian Centennial Professor at the National University of Singapore and the founding director of the Centre for Quantum Technologies (CQT). His research interests extend over most aspects of information processing in quantum-mechanical systems, with a focus on quantum communication and quantum computation. He is best known as one of the pioneers of quantum cryptography.

Early life

Ekert was born in Wrocław, and studied physics at the Jagiellonian University in Kraków and at the University of Oxford. Between 1987 and 1991 he was a graduate student at Wolfson College, Oxford. In his doctoral thesisTHESIS, DPhil, University of Oxford, Correlations in quantum optics, Artur Konrad, Ekert, 1991,weblink 556450608, he showed how quantum entanglement and non-locality can be used to distribute cryptographic keys with perfect security.

Career

In 1991 he was elected a junior research fellow and subsequently (1994) a research fellow at Merton College, Oxford. At the time he established the first research group in quantum cryptography and computation, based in the Clarendon Laboratory, Oxford. Subsequently, it evolved into the Centre for Quantum Computation, now based at DAMTP in Cambridge.Between 1993 and 2000 he held a position of the Royal Society Howe Fellow. In 1998 he was appointed a professor of physics at the University of Oxford and a fellow and tutor in physics at Keble College, Oxford. From 2002 until 2006 he was the Leigh-Trapnell Professor of Quantum Physics at the Department of Applied Mathematics and Theoretical Physics, Cambridge UniversityWEB,weblink CV Artur Ekert, maths.ox.ac.uk, 2015, 2023-01-08,weblink 2023-01-08, and a professorial fellow of King's College, Cambridge. Since 2006 he is professor of quantum physics at the Mathematical Institute, University of Oxford.WEB,weblink Prof Artur Ekert FRS, maths.ox.ac.uk, 2024-01-11, Also in 2006 was appointed a Lee Kong Chian Centennial Professor at the National University of Singapore and became the founding director of the Centre for Quantum Technologies (CQT). After retiring from the director position in 2020 he remains a Distinguished Fellow at CQT.WEB,weblink Artur Ekert Group, quantumlah.org, 2024-01-11, In 2020 he joined the Okinawa Institute of Science and Technology as adjunct professor.WEB,weblink 2020 Year-End Letter from Peter Gruss, oist.jp, 2020, 2024-01-11, He has worked with and advised several companies and government agencies, served on various professional advisory boards, and is the Vice Chairman of The Noel Croucher Foundation.WEB,weblink Board of Trustees, 2015, Croucher Foundation, 28 January 2016,

Research

Ekert's research extends over most aspects of information processing in quantum-mechanical systems, with a focus on quantum cryptography and quantum computation. Building on the idea of quantum non-locality and Bell's inequalities BOOK, Bell, John Stuart, Speakable and Unspeakable in Quantum Mechanics, 2004, Cambridge University Press, 0-521-52338-9, he introduced entanglement-based quantum key distribution. His 1991 paperJOURNAL, Ekert, Artur, 5 August 1991, Quantum cryptography based on Bell's theorem, Physical Review Letters, American Physical Society, 67, 6, 661–663, 10.1103/PhysRevLett.67.661, 1991PhRvL..67..661E s2cid = 27683254, He and collaborators were the first to develop the concept of a security proof based on entanglement purification.JOURNAL, Deutsch, David, Ekert, Artur, Jozsa, Richard, Macchiavello, Chiara, Popescu, Sandu, Sanpera, Anna, 23 September 1996, Quantum privacy amplification and the security of quantum cryptography over noisy channels, Physical Review Letters, American Physical Society, 77, 13, 2818–2821, 10.1103/PhysRevLett.77.2818bibcode = 1996PhRvL..77.2818D , Ekert and colleagues have made a number of contributions to both theoretical aspects of quantum computation and proposals for its experimental realisations. These include proving that almost any quantum logic gate operating on two quantum bits is universal,JOURNAL, Deutsch, David, Barenco, Adriano, Ekert, Artur, 8 June 1995, Universality in quantum computation, Proceedings of the Royal Society A, 449, 1937, 669–677, 10.1098/rspa.1995.0065bibcode = 1995RSPSA.449..669D, 15088854, bibcode = 1995PhRvL..74.4083B, 26611140, bibcode = 2000Natur.403..869J, 4415368, bibcode = 1996RSPSA.452..567P, 17240058, His other notable contributions include work on quantum state swapping, optimal quantum state estimation and quantum state transfer. With some of the same collaborators, he has written on connections between the notion of mathematical proofs and the laws of physics.JOURNAL, Deutsch, David, Ekert, Artur, Lupacchini, Rossella, September 2000, Machines, logic and quantum physics, The Bulletin of Symbolic Logic, Cambridge University Press, 6, 3, 265–283, 10.2307/421056, 421056, math/9911150, 6658624, bibcode = 2008IJTP...47.2101E, 6067361,

Honours and awards

For his discovery of quantum cryptography he was awarded the 1995 Maxwell Medal and Prize by the Institute of Physics, the 2007 Hughes Medal by the Royal Society, the 2019 Micius Quantum Prize and the 2024 Royal Society Milner Award. He is also a co-recipient of the 2004 European Union Descartes Prize. In 2016 he was elected a Fellow of the Royal Society. He is a fellow of the Singapore National Academy of Science and a recipient of the 2017 Singapore Public Administration Medal (Silver) Pingat Pentadbiran Awam. He is a foreign member of the Polish Academy of Arts and Sciences.

See also

• List of Polish physicists

References

{{reflist|35em}}

External links

• "Cryptoreality (Part I): From Ancient Ciphers to Quantum Computers – A Conversation with Artur Ekert" {{Webarchive|url=https://web.archive.org/web/20201016054854weblink |date=16 October 2020 }}, Ideas Roadshow, 2017
• "Cryptoreality (Part II): Applied Foundational Physics – A Conversation with Artur Ekert" {{Webarchive|url=https://web.archive.org/web/20201009101735weblink |date=9 October 2020 }}, Ideas Roadshow, 2017

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