Magnetic Microtraps for Bose-Einstein Condensation PDF Download

Author: Saverio Bartalini
Publisher:
ISBN:
Category :
Languages : en
Pages : 144

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
In the presented work, we report about the successful creation of a Rubidium Bose-Einstein condensate. We use so called magnetic wire traps, which are especially simple, as they consist out of a wire and a homogeneous bias field. These wire traps are especially suited for Bose-Einstein condensation. Furthermore complex trapping potentials to manipulate a Bose-Einstein condensate can be realized. We combine 'large' and small scale wire traps. The 'large' scale is realized with a massive copper structure, while for the small wire traps we use the so called atom chip. This combination is promising, because it allowed us to develop a condensation process in the copper structure, which is independent of the structures on the atom chip, and thus the exchange of the 'physics' area. First experiments with the Bose-Einstein condensate are presented and discussed in detail.

Author: Aaron Edward Leanhardt
Publisher:
ISBN:
Category :
Languages : en
Pages : 298

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(Cont.) Partially condensed atomic vapors were confined by a combination of gravitational and magnetic forces. They were adiabatically decompressed, by weakening the gravito-magnetic trap to a mean frequency of 1 Hz, then evaporatively reduced in size to 2500 atoms. This lowered the peak condensate density to 5 x 1010 atoms/cm3 and cooled the entire cloud in all three dimensions to a kinetic temperature of 450±80 pK.

Author: Jakob Reichel
Publisher: John Wiley & Sons
ISBN: 3527643923
Category : Science
Languages : en
Pages : 412

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This stimulating discussion of a rapidly developing field is divided into two parts. The first features tutorials in textbook style providing self-contained introductions to the various areas relevant to atom chip research. Part II contains research reviews that provide an integrated account of the current state in an active area of research where atom chips are employed, and explore possible routes of future progress. Depending on the subject, the length of the review and the relative weight of the 'review' and 'outlook' parts vary, since the authors include their own personal view and style in their accounts.

Author: Christopher David James Sinclair
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Peter Hannaford
Publisher: World Scientific
ISBN: 9814483958
Category : Science
Languages : en
Pages : 413

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This volume comprises a collection of invited and selected contributions presented at the 16th International Conference on Laser Spectroscopy in Palm Cove, Queensland, Australia, 13-18 July 2003. The papers report the latest and most exciting developments in laser spectroscopy and related areas: new ultra-precise spectroscopic measurements based on optical frequency combs including tests of the stability of the fundamental constants; the first realization of Bose-Einstein condensation in cesium and ytterbium; the behavior of ultra-cold bosons and fermions in optical lattices; the production of ultra-cold cesium, helium and fermionic lithium molecules; the production and coherent transport of ultra-cold atoms in microtraps on the surface of chips; the implementation of one- and two-qubit quantum algorithms and experiments towards a scalable quantum computer based on trapped ions; and new medical applications of laser spectroscopy.The proceedings have been selected for coverage in:• Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings)• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)• CC Proceedings — Engineering & Physical Sciences

Author: Tarik Berrada
Publisher: Springer
ISBN: 3319272330
Category : Science
Languages : en
Pages : 244

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This thesis demonstrates a full Mach–Zehnder interferometer with interacting Bose–Einstein condensates confined on an atom chip. It relies on the coherent manipulation of atoms trapped in a magnetic double-well potential, for which the author developed a novel type of beam splitter. Particle-wave duality enables the construction of interferometers for matter waves, which complement optical interferometers in precision measurement devices, both for technological applications and fundamental tests. This requires the development of atom-optics analogues to beam splitters, phase shifters and recombiners. Particle interactions in the Bose–Einstein condensate lead to a nonlinearity, absent in photon optics. This is exploited to generate a non-classical state with reduced atom-number fluctuations inside the interferometer. This state is then used to study the interaction-induced dephasing of the quantum superposition. The resulting coherence times are found to be a factor of three longer than expected for coherent states, highlighting the potential of entanglement as a resource for quantum-enhanced metrology.

Author: Dian-jiun Han
Publisher:
ISBN:
Category : Bose-Einstein condensation
Languages : en
Pages : 308

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Author: Scott Fraser Owen
Publisher:
ISBN:
Category : Bose-Einstein condensation
Languages : en
Pages : 238

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Author: Peter Hannaford
Publisher: World Scientific
ISBN: 9812386165
Category : Technology & Engineering
Languages : en
Pages : 413

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Book Description
This volume comprises a collection of invited and selected contributions presented at the 16th International Conference on Laser Spectroscopy in Palm Cove, Queensland, Australia, 13-18 July 2003. The papers report the latest and most exciting developments in laser spectroscopy and related areas: new ultra-precise spectroscopic measurements based on optical frequency combs including tests of the stability of the fundamental constants; the first realization of Bose-Einstein condensation in cesium and ytterbium; the behavior of ultra-cold bosons and fermions in optical lattices; the production of ultra-cold cesium, helium and fermionic lithium molecules; the production and coherent transport of ultra-cold atoms in microtraps on the surface of chips; the implementation of one- and two-qubit quantum algorithms and experiments towards a scalable quantum computer based on trapped ions; and new medical applications of laser spectroscopy.The proceedings have been selected for coverage in: ? Index to Scientific & Technical Proceedings? (ISTP? / ISI Proceedings)? Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)? CC Proceedings ? Engineering & Physical Science