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American physicist, information theorist, and IBM Research fellow

For other people named Charles Bennett, see Charles Bennett (disambiguation).

Charles Henry Bennett (born )^[1] is a physicist, information theorist and IBM Fellow at IBM Research.

Charles h bennett biography of alberta His death certificate recorded the cause of death as neuralgia and atrophy although his widow subsequently asserted that he had died of consumption. Article Talk. As well as socializing over convivial dinners, members of the club published a magazine called The Train. Charles Bennett died on 2nd April between eight and nine in the morning.

Bennett's recent work at IBM has concentrated on a re-examination of the physical basis of information, applying quantum physics to the problems surrounding information exchange. He has played a major role in elucidating the interconnections between physics and information, particularly in the realm of quantum computation, but also in cellular automata^[2] and reversible computing.

He discovered, with Gilles Brassard, the concept of quantum cryptography and is one of the founding fathers of modern quantum information theory (see Bennett's four laws of quantum information).

Early career

Born in in New York City, Bennett earned a B.S. in chemistry from Brandeis University in and received his PhD from Harvard in for molecular-dynamics studies (computer simulation of molecular motion) under David Turnbull and Berni Alder.

At Harvard, he also worked for James Watson one year as a teaching assistant about the genetic code. For the next two years he continued this research under Aneesur Rahman at Argonne National Laboratory (operated by the University of Chicago).

After joining IBM Research in , he built on the work of IBM's Rolf Landauer to show that general-purpose computation can be performed by a logically and thermodynamically reversible apparatus; and in he proposed a re-interpretation of Maxwell's demon, attributing its inability to break the second law to the thermodynamic cost of destroying, rather than acquiring, information.^[3] He also published an important paper on the estimation of free-energy differences between two systems, the Bennett acceptance ratio method.

Quantum cryptography

In collaboration with Gilles Brassard of the Université de Montréal, Bennett developed a system of quantum cryptography, building on an idea of Stephen Wiesner.

Charles h bennett biography of alberta california As a child, Charles developed a passion for art, drawing for his inspiration the motley crowds he saw daily in the market. Book Collecting. At Harvard, he also worked for James Watson one year as a teaching assistant about the genetic code. For the next two years he continued this research under Aneesur Rahman at Argonne National Laboratory operated by the University of Chicago.

Known as BB84, the system takes advantage of the uncertainty principle to allow secure communication between parties who share no secret information initially. With the help of John Smolin, he built the world's first working demonstration of quantum cryptography in

His other research interests include algorithmic information theory, in which the concepts of information and randomness are developed in terms of the input/output relation of universal computers, and the analogous use of universal computers to define the intrinsic complexity or "logical depth" of a physical state as the time required by a universal computer to simulate the evolution of the state from a random initial state.

Teleportation

In Bennett and Brassard, in collaboration with others, discovered "quantum teleportation", an effect in which the complete information in an unknown quantum state is decomposed into purely classical information and purely non-classical Einstein–Podolsky–Rosen (EPR paradox) correlations, sent through two separate channels, and later reassembled in a new location to produce an exact replica of the original quantum state that was destroyed in the sending process.

Later work

In –, working with Smolin, Wootters, DiVincenzo, and other collaborators, he introduced several techniques for faithful transmission of classical and quantum information through noisy channels, part of the larger field of quantum information and computation theory. Together with others he also introduced the concept of entanglement distillation.

Charles h bennett biography of alberta canada Sign in. Greeting Card 4 The Dog And The Wolf The Fox And The Crow

Bennett is a Fellow of the American Physical Society and a member of the National Academy of Sciences. He was awarded the Harvey Prize by the Technion^[4] and the Rank Prize in opto-electronics. In he received the Dirac Medal of the ICTP and in the Wolf Prize in Physics.^[5] In June , he received the Shannon Award and for the BBVA Foundation Frontiers of Knowledge Award in Basic Sciences.^[6] In he was awarded the Breakthrough Prize in Fundamental Physics^[7] and also in the Eduard Rhein Foundation Prize in Technology.^[8]

Bennett also co-runs a blog, The Quantum Pontiff, with Steve Flammia and Aram Harrow and hosted by Dave Bacon.

Private life

Bennett identifies himself as an atheist.

Charles h bennett biography of alberta state In —, working with Smolin , Wootters , DiVincenzo , and other collaborators, he introduced several techniques for faithful transmission of classical and quantum information through noisy channels, part of the larger field of quantum information and computation theory. With the help of John Smolin , he built the world's first working demonstration of quantum cryptography in Early career [ edit ]. Aldous Huxley Biography.

Recalling a fond memory of the physicist Asher Peres, he writes:^[9]

[Asher] often pretended to consult me, a fellow atheist, on matters of religious protocol. As we waited in line to eat the hors d'oeuvres at a conference in Evanston, he said, "There is a prayer Jews traditionally say when they do something new that they have never done before.

I am about to eat a new kind of non-Kosher food. Do you think I should say the prayer?"

References

External links