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Topic: Claude Cohen Tannoudji


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In the News (Mon 16 Nov 09)

  
  Claude Cohen-Tannoudji - Wikipedia, the free encyclopedia
Claude Cohen-Tannoudji (born April 1, 1933) is a French physicist working at the École Normale Supérieure in Paris, France, where he has also studied physics.
Claude Cohen-Tannoudji, Gilbert Grynberg and Jacques Dupont-Roc, Introduction a l'électrodynamique Quantique (In French)
Claude Cohen-Tannoudji, Atoms in light fields World scientific, (this is a reprint of most important papers)
en.wikipedia.org /wiki/Claude_Cohen-Tannoudji   (433 words)

  
 The 1996 CNRS Gold Medal
Claude Cohen-Tannoudji is a member of the French Academy of Sciences, a graduate of the Ecole Normale Supérieure and a former student of Alfred Kastler (Nobel Prize in physics) and Jean Brossel, who supervised his doctoral dissertation.
Claude Cohen-Tannoudji is now supervising the work of a team studying matter/radiation interactions and the cooling and trapping of atoms by laser beams.
Claude Cohen-Tannoudji has predicted and observed several new physical phenomena such as the energy level variations of atoms lighted by a non-resonant light wave and the changes occurring in the physical properties of atoms when they are surrounded by a cloud of photons which is constantly absorbed and reemitted.
www.cnrs.fr /cw/en/nomi/prix/or96.html   (1225 words)

  
 Optro2002 - Claude Cohen-Tannoudji
Claude Cohen-Tannoudji est né en 1933 à Constantine, Algérie.
Claude Cohen-Tannoudji was born in 1933 in Constantine (Algeria).
He is a member of the French Academy of Sciences (1981), gold medal of the CNRS (1996), and shared the 1997 Nobel prize with S. Chu and W. Phillips for his work on laser cooling.
optro2002.free.fr /cohen.html   (581 words)

  
 Steven Chu, former Bell Labs researcher, wins Nobel in physics   (Site not responding. Last check: 2007-10-31)
On Oct. 15, the 1997 Nobel Prize in Physics was awarded to Chu, now at Stanford University, and two others, William Phillips and Claude Cohen-Tannoudji, for their development of methods to cool and trap atoms with laser light.
William Phillips of the National Institute of Standards and Technology (NIST) in Gaithersburg, Md., and Claude Cohen-Tannoudji of the Ecole Normale Superieure in Paris, extended the Bell Labs approach and made major contributions of their own.
Claude Cohen-Tannoudji had contributed greatly to the theoretical understanding of cooling experiments.
www.bell-labs.com /user/feature/archives/chu   (1335 words)

  
 Laser cooling yields Nobel in physics   (Site not responding. Last check: 2007-10-31)
Steven Chu, Claude Cohen-Tannoudji, and William D. Phillips have been awarded the 1997 Nobel Prize in Physics for developing methods of using laser light to chill gases to within a few millionths of a degree of absolute zero.
Subsequently, Claude Cohen-Tannoudji and his colleagues at the College de France and Ecole Normale Superieure in Paris developed a way to cool atoms even further (SN: 7/16/94, p.47).
By converting the slowest atoms in the optical molasses to a "dark" state, in which they no longer absorb photons, the team was able to chill helium atoms to a mere 180 billionths of a degree above absolute zero, where the atoms moved at the terrapinlike pace of 2 cm/s.
nasw.org /users/sperkins/phynobel.html   (630 words)

  
 Claude Cohen-Tannoudji - Autobiography
We were going together, once a week, to attend the new lectures given in Saclay by Albert Messiah on quantum mechanics, by Anatole Abragam on NMR and by Claude Bloch on nuclear physics.
New physical effects, which were difficult to predict by standard semiclassical methods, were appearing clearly in the energy diagram of the dressed atom when examining how this energy diagram changes when the number of photons increases.
One of the new effects which were predicted and observed was the modification, and even the cancellation of the Landé factor of an atomic level by interaction with an intense, high frequency radio-frequency field.
nobelprize.org /nobel_prizes/physics/laureates/1997/cohen-tannoudji-autobio.html   (2629 words)

  
 Press Release: The Nobel Prize in Physics 1997
Steven Chu, Claude Cohen-Tannoudji, and William D. Phillips have developed methods of using laser light to cool gases to the µK temperature range and keeping the chilled atoms floating or captured in different kinds of "atom traps".
This value was six times lower than the theoretically calculated Doppler limit! It turned out that the Doppler limit had been calculated for a simplified model atom that had previously been considered sufficiently realistic.
Claude Cohen-Tannoudji and his group between 1988 and 1995 developed a method based on use of the Doppler effect and which converts the slowest atoms to a dark state.
physics.nist.gov /News/Nobel/OtherSites/physics97.html   (2269 words)

  
 Wiley::Quantum Mechanics, Volume 1
Claude Cohen-Tannoudji, born in Constantine (Algeria) in 1933, studied at the École Normale Supérieure in Paris, where he received a postdoctoral lecture qualification in 1962.
In 1973 he was accepted at the Collège de France, and in 1981 became a member of the Academy of Sciences.
In 1997, Claude Cohen-Tannoudji was awarded the Nobel Prize in Physics for his research on laser cooling of neutral atoms (together with Steven Chu and William D. Phillips).
www.wiley.com /WileyCDA/WileyTitle/productCd-047116433X,descCd-authorInfo.html   (256 words)

  
 Stanley Cohen - Search Results - MSN Encarta
Stanley Cohen - Search Results - MSN Encarta
Cohen, Stanley, born in 1922, American professor of biochemistry, born in Brooklyn, New York, and educated at Brooklyn and Oberlin colleges and at...
Scientists quickly realized that restriction enzymes could be used in the laboratory to manipulate DNA.
encarta.msn.com /Stanley_Cohen.html   (94 words)

  
 Hermann Cohen - Search Results - MSN Encarta
Hermann Cohen - Search Results - MSN Encarta
Cohen, Hermann (1842-1918), German Jewish philosopher, one of the founders of the Neo-Kantian school at Marburg an der Lahn.
Cohen, Leonard, born in 1934, Canadian writer, singer-songwriter, and filmmaker, whose fiction and poetry, combined with his fame as a composer and...
encarta.msn.com /Hermann_Cohen.html   (105 words)

  
 Claude Cohen-Tannoudji Winner of the 1997 Nobel Prize in Physics
Photons and Atoms: Introduction to Quantum Electrodynamics by Claude Cohen-Tannoudji et.
Autobiography of Claude N. Cohen-Tannoudji (submitted by Nikolai N. Kostyukovich)
Claude Cohen-Tannoudji — Autobiography (submitted by Chinnappan Baskar)
www.almaz.com /nobel/physics/1997b.html   (209 words)

  
 Lasers are cool, very cool - 16 March 2002 - New Scientist
Blasting it with laser beams would certainly seem an unlikely option, yet this is precisely how physicists have managed the trick, leading to experiments in Bose-Einstein condensation and the creation of matter waves, and the excruciating details of atomic physics and quantum optics.
So it is fortunate that French physicists François Bardou, Jean-Philippe Bouchaud, Alain Aspect and Claude Cohen-Tannoudji have now written Lévy Statistics and Laser Cooling, a beautifully concise yet complete introduction to the logic of this incredible technique.
They point out that modern laser-cooling techniques exploit the strange to produce the extreme—relying on rare events in which atoms, driven by interaction with laser light, suddenly come almost to rest.
www.newscientist.com /article.ns?id=mg17323345.100   (272 words)

  
 Temperature of the Coldest Laboratory Experiment
To reach a very low temperature, such gases as helium have to be liquefied and such a methods have been used by physicists in Bell Labs in Holmdel, NJ.
In 1987 physicist Steven Chu, a former Bell Labs scientist, and other physicists by the names of William Phillips and Claude Cohen-Tannoudji who also worked in the same lab came up with the idea of trapping atoms with lasers by lowering the temperature during their conversation over a lunch table in the lab's cafeteria.
After 20 years of constant research the Low Temperature Lab at the Helsinki University of Technology managed to reach 280 pK or 280 trillionths of a Kelvin.
hypertextbook.com /facts/2001/NehemieCange.shtml   (457 words)

  
 [No title]
The two people who did that, Phillips said, were Steven Chu and Claude Cohen-Tannoudji.
Explanation of the results came almost immediately from Jean Dalibard and Cohen-Tannoudji in Paris and from Chu's group at Stanford.
Claude Cohen-Tannoudji started off as an experimentalist, doing important experiments showing the existence of the "light shift" and is now thought of as a theorist...
www.nasw.org /users/nasw/nasw/appell/articles/NobelPrize.html   (1498 words)

  
 William Daniel Phillips - Wikipedia, the free encyclopedia
He later did some work with Bose-Einstein condensate.
In 1997 he won the Nobel Prize in Physics (together with Claude Cohen-Tannoudji and Steven Chu) for his contributions to laser cooling, a technique to slow the movement of gaseous atoms in order to better study them, at the National Institute of Standards and Technology.
He is also a professor of physics at University of Maryland, College Park.
en.wikipedia.org /wiki/William_Daniel_Phillips   (302 words)

  
 Book: Quantum Mechanics (2 vol. set)   (Site not responding. Last check: 2007-10-31)
Beginning students of quantum mechanics frequently experience difficulties separating essential underlying principles from the specific examples to which these principles have been historically applied.
Nobel-Prize-winner Claude Cohen-Tannoudji and his colleagues have written this book to eliminate precisely these difficulties.
Fourteen chapters provide a clarity of organization, careful attention to pedagogical details, and a wealth of topics and examples which make this work a textbook as well as a timeless reference, allowing to tailor courses to meet students' specific needs.
www.hi.is /~helghe/books/details/447.html   (230 words)

  
 10/16/97 - Six scientists win Nobel prizes in physics, chemistry - IDS Online, Science
In chemistry, American Paul D. Boyer, John E. Walker of Britain and Jens C. Skou of Denmark were honored for discovering aspects of how the body's cells store and use energy, a fundamental process that affects everything from the building of bones to the contraction of muscles and the transmission of nerve impulses.
The physics prize went to Americans Steven Chu and William Phillips and Claude Cohen-Tannoudji of France for developing ways of trapping atoms of gas and cooling them to within a millionth of a degree of nature's limit.
The discovery has already led to more accurate atomic clocks and a new form of matter whose existence Einstein postulated in the 1920s.
www.indiana.edu /~ids/archives/1016nobel.html   (652 words)

  
 Countrybookshop.co.uk - Atoms in Electromagnetic Fields
Presents a collection of papers, written during the last 30 years by Claude Cohen-Tannoudji and his collaborators, on various physical effects which can be observed on atoms interacting with electromagnetic fields.
Emphasis is put on physical mechanisms and on general approaches.
This volume presents a collection of papers, written during the last 30 years by Claude Cohen-Tannoudji and his collaborators, on various physical effects which can be observed on atoms interacting with electromagnetic fields.
www.countrybookshop.co.uk /books/?whatfor=9810212437   (335 words)

  
 Encyclopedia
By 1988 they had pioneered the use of magnetic traps to increase the efficiency of Chu's laser beams and brought the speed of the trapped atoms down from the 30 cm (12 in) per second achieved by Chu.
In collaboration with the French physicist Claude Cohen-Tannoudji and his research team, Phillips showed that cesium atoms could be cooled to about ten times the recoil limit, that is, 2 microkelvins.
Phillips, Chu, and Cohen-Tannoudji shared the 1997 Nobel Prize in physics “for development of methods to cool and trap atoms with laser light.”
www.historychannel.com /encyclopedia/article.jsp?link=FWNE.fw..ph068350.a   (567 words)

  
 Online NewsHour: Nobel Prize: Physics -- October 2, 1997
PHIL PONCE: The last of the Nobel prizes were announced this morning, and today's winners were in the sciences.
In Physics two Americans, Steven Chu and William Phillips, and a French colleague, Claude Cohen-Tanoudji, won the prize.
STEVEN CHU: We--meaning my colleagues at Bell Labs and also Bill Phillips and his group and Claude Cohen-Tanoudji and his group had developed techniques to cool atoms in a gas phase.
www.pbs.org /newshour/bb/science/july-dec97/nobel_10-15.html   (1046 words)

  
 MIT OpenCourseWare | Physics | 8.422 Atomic and Optical Physics II, Spring 2005 | Readings
A 500-page derivation and discussion of the basic equations of QED can be found in: Cohen-Tannoudji, Claude, Jaques Dupont-Roc, and Gilbert Grynberg.
Aspect, A., J. Dalibard, A. Heidmann, C. Salomon, and Claude Cohen-Tannoudji.
Salomon, C., J. Dalibard, A. Aspect, H. Metcalf, and Claude Cohen-Tannoudji.
ocw.mit.edu /OcwWeb/Physics/8-422Spring-2005/Readings/index.htm   (1427 words)

  
 NIST PHYSICIST WILLIAM PHILLIPS WINS 1997 NOBEL PRIZE IN PHYSICS
William D. Phillips, a leading researcher in ultra-low temperature atomic physics at the National Institute of Standards and Technology, today was named a co-winner of the
He shares the award with Steven Chu of Stanford University and Claude Cohen-Tannoudji, Collège de France and École Normale Supérieure, Paris, France.
The Royal Swedish Academy of Sciences selected the trio for work they did independently on the development of methods to cool and trap atoms with laser light.
www.nist.gov /public_affairs/releases/n97-26.htm   (964 words)

  
 BookRags: Claude Cohen-Tannoudji Biography
The phenomenon had been anticipated by Albert Einstein and others.
In the 1990s, Cohen received important recognition for his work: the Julius Edgar Lilienfeld Prize from the American Physics Society (1992), the Charles Hard Townes medal from the Optical Society of America (1993), the Harvey prize in science and technology from Technion, Israel (1996).
Also in 1996, Cohen-Tannoudji won the Médaille d'Or of the National Center for Scientific Research, the highest honor a scientist can receive in France.
www.bookrags.com /biography/claude-cohen-tannoudji-woi   (741 words)

  
 Background on the Nobel Prize in Physics 1997
This additional background material is written mainly for physicists.
The work of Steven Chu, Claude Cohen-Tannoudji and William D. Phillips in the field of laser cooling and trapping has meant a breakthrough for both theory and experiment within the field and has led to a deeper understanding of the interaction between light and matter.
It has also led to an intense world-wide activity within the atomic, molecular and optical physics community and has, in particular, opened up new roads towards the study of the quantum behaviour of dilute atomic vapours at very low temperatures.
physics.nist.gov /News/Nobel/OtherSites/phyback97.html   (2653 words)

  
 Publisher-supplied biographical information about contributor(s) for Library of Congress control number 91040587   (Site not responding. Last check: 2007-10-31)
Publisher-supplied biographical information about contributor(s) for Atom-photon interactions : basic processes and applications / Claude Cohen-Tannoudji, Jacques Dupont-Roc, Gilbert Grynberg ; [translation by Patricia Thickstun].
The Library of Congress makes no claims as to the accuracy of the information provided, and will not maintain or otherwise edit/update the information supplied by the publisher.
Claude Cohen-Tannoudji is Professor of Physics at the Collège de France.
www.loc.gov /catdir/bios/wiley041/91040587.html   (222 words)

  
 Calvin College: Calvin News   (Site not responding. Last check: 2007-10-31)
Calvin College professor of physics Matt Walhout learned this morning that the mentor for his Ph.D. work has won the 1997 Nobel Prize in Physics.
William D. Phillips of the National Institute of Standards and Technology (NIST) in Gaithersburg, Maryland, was awarded the prize jointly by the Royal Swedish Academy of Sciences, joining Steven Chu of Stanford University and Claude Cohen-Tannoudji of Collège de France and École Normale Supérieure in France.
The trio was awarded the Nobel Prize in Physics for its "development of methods to cool and trap atoms with laser light."
www.calvin.edu /news/releases/unfiled/walhout.htm   (356 words)

  
 Amazon.com: Atom—Photon Interactions: Basic Processes and Applications: Books: Claude Cohen-Tannoudji,Jacques ...   (Site not responding. Last check: 2007-10-31)
This item is not eligible for Amazon Prime, but over a million other items are.
by Claude Cohen-Tannoudji, Jacques Dupont-Roc, Gilbert Grynberg, Claude Cohen-Tannoudji, Jacques Dupont-Roc, Gilbert Grynberg "The idea of probability amplitude plays a central role in the quantum description of the time evolution of a physical process..." (more)
Photons and Atoms - Introduction to Quantum Electrodynamics (Wiley Professional) by Claude Cohen-Tannoudji
www.amazon.com /AtommdashPhoton-Interactions-Basic-Processes-Applications/dp/0471625566   (875 words)

  
 William D. Phillips Named Nobel Prize Winner for Physics   (Site not responding. Last check: 2007-10-31)
In October 1997, the Royal Swedish Academy of Sciences awarded the Nobel prize for Physics to William Phillips of NIST, Steven Chu of Stanford University, and Claude Cohen-Tannoudji, Collège de France and École Normale Supérieure, Paris, France, for their work in developing methods to cool and trap atoms with laser light.
"I am thrilled to share in this prize along with Steven Chu and Claude Cohen-Tannoudji.
The joint award emphasizes that this work was not done in isolation," said Phillips upon receiving the prize.
museum.nist.gov /exhibits/timeline/item.cfm?itemId=65   (370 words)

  
 Publisher-supplied biographical information about contributor(s) for Library of Congress control number 88037845
Publisher-supplied biographical information about contributor(s) for Library of Congress control number 88037845
Publisher-supplied biographical information about contributor(s) for Photons and atoms : introduction to quantum electrodynamics / Claude Cohen-Tannoudji, Jacques Dupont-Roc, Gilbert Grynberg.
About the authors CLAUDE COHEN-TANNOUDJI is Professor of Physics at the College de France.
www.loc.gov /catdir/bios/wiley041/88037845.html   (228 words)

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