Quantum (un)speakables : from Bell to quantum information ; [University of Vienna, 10-14 November 2000

This outstanding collection of essays in commemoration of John S. Bell is the result of the "Quantum (Un)speakables" conference organised by the University of Vienna. The title was taken from a famous note written by John Bell during the "Schrödinger Symposium" of 1987. The book leads the reader from the foundations of quantum mechanics to quantum entanglement, quantum cryptography, and quantum information, and is written for all those who need more insight into this new area of physics.||List of Contributors:||Markus Arndt, University of Vienna, Austria|Alain Aspect, Laboratoire Charles Fabry, Orsay, France|Mary Bell, Geneva Switzerland|Reinhold A. Bertlmann, University of Vienna, Austria|John F. Clauser, J.F. Clauser & Assoc., Walnut Creek, CA|John Conway, Princeton University, Princeton, NJ|Artur Ekert, Oxford University, Oxford, UK|Bernard D'Espagnat, University of Paris (Emeritus), Paris France|Edward S. Fry, Texas A&M University, College Station, TX|GianCarlo Ghirardi, University of Trieste, Italy|Nicolas Gisin, University of Geneva, Switzerland|Daniel Greenberger, CCNY, New York, NY|Walter Grimus, University of Vienna, Austria|Beatrix C. Hiesmayr, University of Vienna, Austria|Gerard 't Hooft, University of Utrecht, The Netherlands|Michael Horne, Stonehill College, Easton, MA|Roman Jackiw, MIT, Cambridge, MA|Simon Kochen, Princeton University, Princeton, NJ|Jon Magne Leinaas, University of Oslo, Norway|N. David Mermin, Cornell University, Ithaca, NY|Olaf Nairz, University of Vienna, Austria|Jian-Wei Pan, University of Vienna, Austria|Roger Penrose, Oxford University, Oxford, UK|R. Rajaraman, Jawaharlal Nehru University, New Delhi, India|Helmut Rauch, University of Vienna, Austria|Franco Selleri, University of Bari, Italy|Abner Shimony, Cupertino, CA|Jack Steinberger, CERN, Geneva, Switzerland|Stig Stenholm, Royal Institute of Technology, Stockholm, Sweden|Lev Vaidman, Tel Aviv University, Tel Aviv, Israel|Thomas Walther, Texas A&M University, College Station, TX|Gregor Weihs, University of Vienna, Austria|Andrew Whitaker, Queen's University, Belfast, Northern Ireland|Anton Zeilinger, University of Vienna, Austria|Antonio Zichichi, CERN, Geneva, Switzerland Front Matter....Pages I-XXII Front Matter....Pages 1-1 Some Reminiscences....Pages 3-5 John Bell in Belfast: Early Years and Education....Pages 7-20 My Interaction with John Bell....Pages 21-28 Magic Moments: A Collaboration with John Bell....Pages 29-47 Front Matter....Pages 49-49 John S. Bell: Some Reminiscences and Reflections....Pages 51-60 Early History of Bell’s Theorem....Pages 61-98 On Four Decades of Interaction with John Bell....Pages 99-102 Atom Based Tests of the Bell Inequalities — the Legacy of John Bell Continues .......Pages 103-117 Bell’s Theorem: The Naive View of an Experimentalist....Pages 119-153 Bell’s Theorem for Space-Like Separation....Pages 155-162 The EPR Paradox in Massive Systems or about Strange Particles....Pages 163-181 Front Matter....Pages 183-183 Are There Measurements?....Pages 185-198 Sundays in a Quantum Engineer’s Life....Pages 199-207 Secret Sides of Bell’s Theorem....Pages 209-220 An Impossible Necklace....Pages 221-223 Multi-Photon Entanglement and Quantum Non-Locality....Pages 225-240 Bell’s Theorem, Information and Quantum Physics....Pages 241-254 Front Matter....Pages 255-255 The Geometry of the Quantum Paradoxes....Pages 257-269 Whose Knowledge?....Pages 271-280 The History of the GHZ Paper....Pages 281-286 Front Matter....Pages 255-255 John Stewart Bell and the Dynamical Reduction Program....Pages 287-305 How Does God Play Dice? (Pre-)Determinism at the Planck Scale....Pages 307-316 Front Matter....Pages 317-317 John Bell, State Reduction, and Quanglement....Pages 319-331 Interferometry with Macromolecules: Quantum Paradigms Tested in the Mesoscopic World....Pages 333-350 Towards More Quantum Complete Neutron Experiments....Pages 351-373 Front Matter....Pages 375-375 John Bell’s Observations on the Chiral Anomaly and Some Properties of Its Descendants....Pages 377-382 Fractional Charge....Pages 383-399 Thermal Excitations of Accelerated Electrons....Pages 401-412 Bell’s Spaceships and Special Relativity....Pages 413-428 John Bell and the Ten Challenges of Subnuclear Physics....Pages 429-477 Back Matter....Pages 479-485 issues raised by quantum theory, a topic not very popular during his student days at Queen's University, Belfast. Apparently, John Bell, who had been interested in the Bohr-Einstein dialogue, always took the position of Albert Einstein on philosophical issues. He also felt that a completion of quantum mechanics using so-called "hidden variables" would be highly desired, as it would help to regain a realistic and objective picture of the world. That way, Bell hoped one would be able to arrive at a physics where "measurement" would not play such a central role as in the Copenhagen interpretation of quantum mechanics. Then, a most interesting sequence of events set in. In 1952, David Bohm had achieved something which had earlier been proclaimed impossible. It had been proved by John von Neumann that no hidden variable theory could agree with quantum mechanics. Bohm actually formulated such a theory, where each particle at any time has both a well-defined position and a well­ defined momentum. The conflict raised between von Neumann and Bohm was elegantly resolved by Bell, who showed that von Neumann's proof contained a physically unjustifiable assumption. So while John Bell had flung open the door widely for hidden variable theories, he immediately dealt them a major blow. In 1964, in his celebrated paper "On the Einstein-Podolsky-Rosen Paradox", he showed that any hidden variable theory, which obeys Einstein's requirement of locality, i. e. The Book Leads The Reader From The Foundations Of Quantum Mechanics To Quantum Entanglement, Quantum Cryptography, And Quantum Information, And Is Written For All Those Who Need More Insight Into This New Area Of Physics.--jacket. Pt. I. John S. Bell -- The Man. 1. Some Reminiscences / Mary Bell. 2. John Bell In Belfast: Early Years And Education / Andrew Whitaker. 3. My Interaction With John Bell / Bernard D'espagnat. 4. Magic Moments: A Collaboration With John Bell / Reinhold A. Bertlmann -- Pt. Ii. Tests Of Bell's Inequalities. 5. John S. Bell: Some Reminiscences And Reflections / Abner Shimony. 6. Early History Of Bell's Theorem / John F. Clauser. 7. On Four Decades Of Interaction With John Bell / Michael Horne. 8. Atom Based Tests Of The Bell Inequalities -- The Legacy Of John Bell Continues / Edward S. Fry And Thomas Walther. 9. Bell's Theorem: The Naive View Of An Experimentalist / Alain Aspect. 10. Bell's Theorem For Space-like Separation / Gregor Weihs. [edited By] R.a. Bertlmann, A. Zeilinger. Papers Based On A Conference At The University Of Vienna, 10-15 November 2000. Includes Bibliographical References And Index.

This outstanding collection of essays leads the reader from the foundations of quantum mechanics to quantum entanglement, quantum cryptography, and quantum information, and is written for all those in need of a thorough insight into this new area of physics.