Media

Aephraim Steinberg

Aephraim Steinberg is a Professor in the Department of Physics at the University of Toronto.  He is also a founding member of Toronto's Institute for Optical Sciences, a member and past director of the Centre for Quantum Information and Quantum Control (CQIQC), an affiliate member of the Perimeter Institute for Theoretical Physics and a principal investigator in Photonics Research Ontario, the Canadian Institute for Photonic Innovations, and QuantumWorks. Dr. Steinberg received his undergraduate degree from Yale University in 1988 and his Ph.D. from the University of California at Berkeley in 1994.  He then held post-doctoral fellowships at the Université de Paris VI and the U.S. National Institute of Standards and Technology before moving to Toronto in 1996.  He has been a guest professor at the University of Vienna; the Institut d'Optique Théorique et Appliquée in Orsay, France; and the University of Queensland in Australia.  In 2006, he received the Canadian Association of Physicists Herzberg Medal and the Rutherford Medal in Physics from the Royal Society of Canada.  In 2007, he received a Steacie Fellowship from NSERC, and a McLean Fellowship (Connaught Foundation, University of Toronto).  He is a Fellow of the Institute of Physics (UK), the American Physical Society, and the Optical Society of America. He joined CIFAR's Quantum Information Science Program in 2003. Dr. Steinberg’s interests lie in fundamental quantum-mechanical phenomena and the control & characterization of the quantum states of systems ranging from laser-cooled atoms to individual photons.  His experimental program is two-pronged, using both nonclassical two-photon interference and laser-cooled atoms to study issues such as quantum information & computation, decoherence and the quantum-classical boundary, tunneling times, weak measurement & retrodiction in quantum mechanics, and the control and characterization of novel quantum states.

View Profile
Aephraim Steinberg

Aephraim Steinberg is a Professor in the Department of Physics at the University of Toronto.  He is also a founding member of Toronto's Institute for Optical Sciences, a member and past director of the Centre for Quantum Information and Quantum Control (CQIQC), an affiliate member of the Perimeter Institute for Theoretical Physics and a principal investigator in Photonics Research Ontario, the Canadian Institute for Photonic Innovations, and QuantumWorks. Dr. Steinberg received his undergraduate degree from Yale University in 1988 and his Ph.D. from the University of California at Berkeley in 1994.  He then held post-doctoral fellowships at the Université de Paris VI and the U.S. National Institute of Standards and Technology before moving to Toronto in 1996.  He has been a guest professor at the University of Vienna; the Institut d'Optique Théorique et Appliquée in Orsay, France; and the University of Queensland in Australia.  In 2006, he received the Canadian Association of Physicists Herzberg Medal and the Rutherford Medal in Physics from the Royal Society of Canada.  In 2007, he received a Steacie Fellowship from NSERC, and a McLean Fellowship (Connaught Foundation, University of Toronto).  He is a Fellow of the Institute of Physics (UK), the American Physical Society, and the Optical Society of America. He joined CIFAR's Quantum Information Science Program in 2003. Dr. Steinberg’s interests lie in fundamental quantum-mechanical phenomena and the control & characterization of the quantum states of systems ranging from laser-cooled atoms to individual photons.  His experimental program is two-pronged, using both nonclassical two-photon interference and laser-cooled atoms to study issues such as quantum information & computation, decoherence and the quantum-classical boundary, tunneling times, weak measurement & retrodiction in quantum mechanics, and the control and characterization of novel quantum states.

View Profile

Filter the library

profile Maurice de Gosson

Maurice A. de Gosson (born 13 March 1948), (also known as Maurice Alexis de Gosson de Varennes) is an Austrian mathematician and mathematical physicist, born in 1948 in Berlin. He is currently a Senior Researcher at the Numerical Harmonic Analysis Group (NuHAG) of the University of Vienna. After completing his PhD in microlocal analysis at the University of Nice in 1978 under the supervision of Jacques Chazarain, de Gosson soon became fascinated by Jean Leray's Lagrangian analysis. Under Leray's tutorship de Gosson completed a Habilitation à Diriger des Recherches en Mathématiques at the University of Paris 6 (1992). During this period he specialized in the study of the Leray–Maslov index and in the theory of the metaplectic group, and their applications to mathematical physics. In 1998 de Gosson met Basil Hiley, who triggered his interest in conceptual question in quantum mechanics. Basil Hiley wrote a foreword to de Gosson's book The Principles of Newtonian and Quantum Mechanics (Imperial College Press, London). After having spent several years in Sweden as Associate Professor and Professor in Sweden, de Gosson was appointed in 2006 at the Numerical Harmonic Analysis Group of the University of Vienna, created by Hans Georg Feichtinger (see www.nuhag.eu). He currently works in symplectic methods in harmonic analysis, and on conceptual questions in quantum mechanics, often in collaboration with Basil Hiley. Maurice de Gosson has held longer visiting positions at Yale University ,[6][7] University of Colorado in Boulder (Ulam Visiting Professor) ,[8] University of Potsdam, Albert-Einstein-Institut (Golm), Max-Planck-Institut für Mathematik (Bonn), Université Paul Sabatier (Toulouse), Jacobs Universität (Bremen) Maurice de Gosson was the first to prove that Mikhail Gromov's symplectic non-squeezing theorem (also called „the Principle of the Symplectic Camel“) allowed the derivation of a classical uncertainty principle formally totally similar to the Robertson–Schrödinger uncertainty relations (i.e. the Heisenberg inequalities in a stronger form where the covariances are taken into account). This rather unexpected result was discussed in the media. In 2004/2005, de Gosson showed that Gromov's non-squeezing theorem allows a coarse graining of phase space by symplectic quantum cells, each described by a mean momentum and a mean position. The cell is invariant under canonical transformations. De Gosson called such a quantum cell a quantum blob: "The quantum blob is the image of a phase space ball with radius by a (linear) symplectic transformation" and “Quantum blobs are the smallest phase space units of phase space compatible with the uncertainty principle of quantum mechanics and having the symplectic group as group of symmetries. Quantum blobs are in a bijective correspondence with the squeezed coherent states from standard quantum mechanics, of which they are a phase space picture.” Their invariance property distinguishes de Gosson's quantum blobs from the "quantum cells" known in thermodynamics, which are units of phase space with a volume of the size of Planck's constant h to the power of 3. De Gosson's notion of quantum blobs has given rise to a proposal for a new formulation of quantum mechanics, which is derived from postulates on quantum-blob-related limits to the extent and localization of quantum particles in phase space; this proposal is strengthened by the development of a phase space approach that applies to both quantum and classical physics, where a quantum-like evolution law for observables can be recovered from the classical Hamiltonian in a non-commutative phase space, where x and p are (non-commutative) c-numbers, not operators.

profile Markus Arndt

Markus Arndt (* 14. September 1965 in Unkel) ist ein deutscher Physiker und Professor für Quantennanophysik an der Universität Wien. Markus Arndt studierte von 1985 bis 1990 Physik in Bonn und München. Es folgten von 1991 bis 1994 Doktoratsstudien am Max-Planck-Institut für Quantenoptik in Garching; das Thema der Dissertation lautete Optical and magneto-optical spectroscopy of metal atoms in liquid and solid He-4. Von 1994 bis 1995 war Arndt wissenschaftlicher Mitarbeiter am Max-Planck-Institut für Quantenoptik, von 1999 bis 2002 Universitätsassistent am Institut für Experimentalphysik der Universität Wien, ebenda erfolgte 2002 seine Habilitation. Ab September 2004 war er Vertragsprofessor für Quantennanophysik an der Universität Wien. 2008 wurde er Universitätsprofessor für Quantennanophysik an der Fakultät für Physik der Universität Wien. Markus Arndt ist verheiratet und hat zwei Söhne. Im Jahr 2000 erhielt er den Erich-Schmid-Preis der österreichischen Akademie der Wissenschaften (ÖAW), gemeinsam mit G. Springholz, sowie den Fritz-Kohlrausch Preis der Österreichischen Physikalischen Gesellschaft (ÖPG). Im Jahr 2001 wurde er mit dem START-Preis des Fonds zur Förderung der wissenschaftlichen Forschung (FWF) ausgezeichnet, 2008 mit dem FWF Wittgensteinpreis Wittgensteinpreis. 2012 warb er einen Advanced Grant des Europäischen Forschungsrats (ERC) ein [3]. Im Jahr 2013 wurde ihm der Preis der Stadt Wien für Naturwissenschaften zuerkannt. 2014 wurde er zum korrespondierenden Mitglied im Inland der mathematisch-naturwissenschaftlichen Klasse der Österreichischen Akademie der Wissenschaften gewählt.

profile Stephen Adler

Stephen Adler (b. 1939 in New York City) is an American physicist specializing in elementary particles and field theory. He received an A.B. degree at Harvard University in 1961 and a Ph.D. from Princeton University in 1964. He became a member of the Institute for Advanced Study in 1966, becoming a full Professor of Theoretical Physics in 1969, and was named "New Jersey Albert Einstein Professor" at the institute in 1979. He has won the J. J. Sakurai Prize from the American Physical Society in 1988, and the Dirac Medal of the International Centre for Theoretical Physics in 1998, among other awards. Adler's seminal papers on high energy neutrino processes, current algebras, soft pion theorems, sum rules, and perturbation theory anomalies helped lay the foundations for the current standard model of elementary particle physics. Princeton University, Ph.D. 1964; Harvard University, Junior Fellow, Harvard Society of Fellows, 1964–66; California Institute of Technology, Research Associate 1966; Princeton University, Visiting Lecturer 1969; Institute for Advanced Study, Member 1966–69, New Jersey Albert Einstein Professor 1979–2003, Professor 1969–2010, Professor Emeritus 2010–; American Academy of Arts and Sciences, Fellow; American Association for the Advancement of Science, Fellow; American Physical Society, Fellow; National Academy of Sciences, Member; American Physical Society, J. J. Sakurai Prize 1988; International Centre for Theoretical Physics, Dirac Prize and Medal 1998