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CCAST“激光冷却：玻色—爱因斯坦凝聚和原子激射器”研讨会

作者： MikioKozuma YoichiSuzuki YoshioTorii ToshiakiSugiura TakahiroKuga e.w.hagley LDeng Institute of Physics University of Tokyo3-8-1 Komaca Meguro-ku Tokyo 153-8902Japan Department of Physics.Cakushuin University.Mejiro 1-5-1.Toshima-ku Tokyo 171-8588 Japan. physucs Lab National institute of Standards and Technology.Gaithersburg MD 20899.USA. physucs Lab National institute of Standards and Technology Gaithersburg.MD 20899.USA.

Phase-coherent matter-wave amplification was demonstrated using Bose-einstein-condensed rubidium-87 atoms.A small seed matter wave was createdwith coherent opticaI Bragg *** of this seed matter wavewas achieved by using the initial condensate as a gain medium through thesuperradiance *** coherence properties of the amplified matter wave,studied with a matter wave interferometer,were shown to *** to thoseof the initial seed *** active matter wave device demonstrated here hasgreat potentiaI in the fields of atom *** *** precisionmeasurements.

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Multi-function and low-noise phase-shifting manipulator at single-photon level

Multi-function and low-noise phase-shifting manipulator at s...

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第十七届全国量子光学学术会议

作者：朱成杰 Y.Li L.DeNG e.w.hagley w.R.GARReTT 同济大学 Department of Physics East China Normal University National Institute of Standards and Technology Department of Physical and Astronomy University of Tennessee

＜正＞利用相干制备的三能级原子气体,我们提出实现单光子无损相位操控的理论模型。基于两波混频效应,我们发现通过锁定泵浦光与双光子失谐,探测光的吸收可以被完全抵消,同时其相位不随探测光的频率而发生改变。通过选择合适的系统参数...

＜正＞利用相干制备的三能级原子气体,我们提出实现单光子无损相位操控的理论模型。基于两波混频效应,我们发现通过锁定泵浦光与双光子失谐,探测光的吸收可以被完全抵消,同时其相位不随探测光的频率而发生改变。通过选择合适的系统参数,我们可以在很大的频率范围内使探测光的相位为π,而探测光的吸收接近于零,从而实现单光子、低噪声量子相位

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A well-Collimated Quasi-Continuous Atom Laser

A Well-Collimated Quasi-Continuous Atom Laser

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CCAST“激光冷却：玻色—爱因斯坦凝聚和原子激射器”研讨会

作者： e.w.hagley L.Deng M.Kozuma J.wen K.Helmerson S.L.Rolston w.D.Phillips National Institute of Standards and Technology Gaithersburg.MD 20899.USA. National Institute of Standards and Technology Gaithersburg.MD 20899.USA.Georgia Southern University.Statesboro.CA 30460.USA. Institute of Physics.University of Tokyo Tckyo 153-8902.Japan

extraction of sodium atoms from a trapped Bose-einstein condensate (BeC) bya coherent. stimulated Raman process is demonstrated. Optical Raman pulsesdrive transitions between trapped and untrapped magnetic sublevels. giving theoutput-coupled BeC fraction a well-defined momentum. The pulsed outputcoupling can be run at such a rate that the extracted atomic wave packetsstrongly overlap, forming a highly directional. quasi-continuous matter wave.

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Temporal,Matter-wave-Dispersion Talbot effect

Temporal,Matter-Wave-Dispersion Talbot Effect

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CCAST“激光冷却：玻色—爱因斯坦凝聚和原子激射器”研讨会

作者： L.Deng e.w.hagley J.Denschlag J.e.Simsarian Mark edwards C.w.Clark K.Helmerson S.L.Rolston w.D.Phillips National Institute of Standards and Technology Gaithersburg Maryland 20899 Permanent address:Department of Physics Georgia Southern University StatesboroGA 30460

we analyze and experimentally demonstrate a new(temporal)Talbot effect,where a pulsed phasegrating is applied to a cloud of cold atoms(Bose-einstein condensate).In contrast to the usual(spatial)Talbot effect,our atoms gain kinetic energy when diffracted by the pulsed *** energy gain andthe matter-wave-dispersion relation result in an exact(no pxraxial approximation)Talbot effect where theinitial wave front is reconstructed at multiples of a“Talbot tune”*** demonstrate the Talbot effectby applying a second pulsed phase grating after a variable *** this second grating is applied ateven(odd)multiples of r/2,it doubles(cancels)the effect of the first pulsed grating.

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Coherent Splitting of Bose-einstein Condensed Atoms with Optically Induced Bragg Diffraction

Coherent Splitting of Bose-Einstein Condensed Atoms with Opt...

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CCAST“激光冷却：玻色—爱因斯坦凝聚和原子激射器”研讨会

作者： M.Kozuma L.Deng e.w.hagley J.wen R.Lutwak K.Helmerson S.L.Rolston w.D.Phillips Current address:Department of Physics Tokyo University Tokyo 153-8920Japan. Permanent address:Department of Physics Georgia Southern University StatesboroGA 30460. National Institute of Standards and Technology Gaithersburg Maryland 20899 Current address:FTS Inc. BeverlyMA 01915

we have observed Bragg diffraction ofa Bose-einstein condensate of sodium atoms by a moving,periodic,optical *** coherent process of Bragg diffraction prcduced a spitting of thecondensate with unidirectional momentum *** the momentum selectivity of the Braggprocess,we separated a condensate component with a momentrm width narrower than that of theoriginal *** repeatedly pulsing the optical potential while the atoms were *** observed the trajectory of the split atomic wave packets in the confining magnetic potential.[S0031-9007(98)08316-1]

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Four-wave mixing with matter waves

Four-wave mixing with matter waves

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CCAST“激光冷却：玻色—爱因斯坦凝聚和原子激射器”研讨会

作者： L.Deng e.w.hagley J.wen M.Trippenbach Y.Band P.S.Julienne J.e.Slmsarian K.Helmerson S.L.Rolston w.D.Phillips Atomic Physics Division National Institute of Standards and Technology GaithersburgMaryland 20899USA Department of PhysicsGeorgia Southern UniversityStateiboroGeorgia 30460USA Atomic Physics Division National Institute of Standards and TechnologyGaithersburgMaryland 20899USA Atomic Physics Division National Institute of Standards and Technology GaithersburgMaryland 20899USA Department of Chemistry and PhysicsBen-Gurion University of the NegevBeer-sheva 84105Israel

The advent of the laser as an intense source of coherent light gaverist to monlinear optics,which now plays an important role inmany areas of science and *** of the first applicationsof nonlinear optics was the multi-wave mixing of several opticalfields in a nonlinear medium(one in which the refractive indexdepends on the intensity of the field)to produce coherent light of anew *** recent experimental rcalization of the matter-wave ‘laser‘ —based on the extraction ol coherent atoms from aBost-einstein condensate—opens th‘ way for analogous experi-ments with intense sources of matter waves:nonlinear *** we report coherent four-wave mixing in whichthree sodium matter waves of differing momenta mir to produce,by means of nonlinear atom-atom interactions,a fourth wavewith new *** find a clear signature of a four-wavemixing process in the dependence of the generated matter wave onthe densities of the input *** results may ultimatelyfacilitate the production and investigation of quantum correlationsbetween matter waves.

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物质波的四波混频

物质波的四波混频

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第四届中国教育家大会

作者： L.Deng e.w.hagley J.wen M.Trippenbach Y.Band P.S.Julienne J.e.Simsarian K.Helmerson S.L.Rolston w.D.Phillips 李拓西安邮电学院数理系

译者:四波混频(Four-wave Mixing,FwM 或4wM)是指多个两个或三个不同波长的光波相互作用而导致在其他波长上产生混频成分,或在边带上产生新的光波效应。它在通信、测量等领域中有着广泛的应用。如今在众多物理学刊中针对光波的四波混频...

译者:四波混频(Four-wave Mixing,FwM 或4wM)是指多个两个或三个不同波长的光波相互作用而导致在其他波长上产生混频成分,或在边带上产生新的光波效应。它在通信、测量等领域中有着广泛的应用。如今在众多物理学刊中针对光波的四波混频作了详细介绍,但在物质波的四波混频上的相关研究文章并不多见。1999年3月18日《NATURe》杂志

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Generating Solitons by Phase engineering of a Bose-einstein Condensate

Generating Solitons by Phase Engineering of a Bose-Einstein ...

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CCAST“激光冷却：玻色—爱因斯坦凝聚和原子激射器”研讨会

作者： J.Denschlag J.e.Simsarian D.L.Feder C.w.Clark L.A.Collins J.Cubizolles L.Deng e.w.hagley K.Helmerson w.P.Reinhardt S.L.Rolston B.I.Schneider w.D.Phillips National Institute of Standards and Technology (NIST.Gaithersburg MD 20899.USA. ~1National Institute of Standards and Technology(NIST.Caithersburg MO 2O899 USA.~2University of Oxford parks Road.OXford OX1 3PU UK. Theoretical Division Mail Stop 3212.Los Alamos Natiooal Laboratory Los AlamosNM 87545USA National Inscitute of Standards and Technology(NIST.Gaithersbure MD 20899.USA. ecole Normate Superieure 24 rue Lhomond 75231 Paris.France. National Institute of Standards and Technology (NIST.Gaithersburg.MO 20899. USA.Department of Chemistry.University of washington Seattle.wA 98 95.USA. Physics Division National Science Foundation ArjingtonVA 22230.USA

Quantum phase engineering is demonstrated with two novel techniques thatallow the spatial phase distribution of a Bose-einstein condensate(BeC) to bewritten and read out.A quantum state was designed and produced by opticallyimprinting a phase pattern onto a BeC of sodium atoms,and matter-waveinterferometry with spatially resolved imaging was used to analyze the re-sultant phase *** appropriate phase imprint created *** experimental realization of this nonlinear phenomenon in a BeC Thesubsequent evolution of these excitations was investigated both experimentallyand theoretically.

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Measurement of the Coherence of a Bose-einstein Condensate

Measurement of the Coherence of a Bose-Einstein Condensate

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CCAST“激光冷却：玻色—爱因斯坦凝聚和原子激射器”研讨会

作者： e.w.hagley L.Deng M.Kozuma M.Trippenbach Y.B.Band P.S.Julienne K.Helmerson S.L.Rolston w.D.Phillips M.edwards M.Doery National Institure of Standards and Technology 100 Bureau Drive Stop 8424 GaithersburgMaryland 20899-8424 National Institure of Standards and Technology 100 Bureau Drive Stop 8424GaithersburgMaryland 20899-8424 Departments of Chemistry and Physics.Ben-Gurion University of the Negev Beer-Sheva.Israel 84105 Department of Physics.Ceorgia Southern Universirv Statesboro.Georgia 30460-8031

we present experimental and theorerical studies of the coherence properties of a Bode-einsteincondensate(BeC)using an interference *** optical standing wave pulses of duration100 ns and separation Δt are applied to a *** standing wave phase grating makes smallcopies of the condensate displaced in momentum *** quantum mechanical amplitudes of eachcopy *** on Δt and on spatial phase variations across the *** find thatthe behavior of a trapped BeC is consistent with a uniform spatial phase.A releared *** large phase variation across the condensate.

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Medication compliance among mentally Ill patients in public clinics in Kingston and St. Andrew, Jamaica

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Journal of Biomedical Science and engineering 2010年第6期3卷 602-611页

作者： Andrea e. Pusey-Murray Paul A. Bourne Stan warren Janet LaGrenade Christopher A. D. Charles 不详

The Bellevue and the hagley Park mental health outpatient clinics in Jamaica serve the majority of psychiatric patients in the country, but there is a dearth of research on medication compliance, which is a very important mental health issue. Medication compliance affects intervention outcomes. Therefore, this study seeks to examine medication compliance among psychiatric patients in Jamaica. A 33-item questionnaire which included items on demographics, health conditions, medication compliance and insightfulness was administered to a sample of 370 participants with a response rate of 93%. The majority of the participants have schizophrenia, followed by depression, bipolar disorder and drug-induced psychosis. The majority of the participants (65.3%) did not comply with their prescribed medication regimen. Medication compliance was significantly related to: gender (P where males were more likely to take the prescribed medication, family support (P where the participants who received family support (the majority being males) were more likely to take the prescribed medication, and insightfulness (P where the majority of participants with insightfulness were females. Locus on control was not statistically tested but a majority of the non- compliant participants reported that factors external to themselves had greater control over their disorder. Conclusion: There are three significant factors that explain the medication compliance of psychiatric patients in Jamaica. An important non-tested factor is locus of control so there needs to be more research to understand the range of factors that can inform and improve patient education about medication compliance.

关键词： Medication Compliance Mentally Ill Public Clinics Kingston St. Andrew

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