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Author : Peter D. D. Schwindt
Publisher :
ISBN 13 :
Total Pages : 284 pages
Book Rating : 4.:/5 (566 download)
Download or read book Magnetic Traps and Guides for Bose-Einstein Condensates on an Atom Chip written by Peter D. D. Schwindt and published by . This book was released on 2003 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bose-Einstein Condensation in a Robust Microtrap -- the Combination of Wire Traps and Atom Chips written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book One-dimensional Bose-Einstein Condensates in Micro-traps written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A novel wire-based magneto-optical trap has been demonstrated which enables to collect up to 3x10^8 cold atoms close to the reflecting surface of an atom chip. These atoms are subsequently transferred to micro-traps generated by wires mounted on the atom chip and Bose-Einstein condensation has been achieved. The Bose-Einstein condensates (BECs) created in the micro-traps form in the one-dimensional Thomas-Fermi regime. The cross-over between three-dimensional and one-dimensional BECs has been investigated by monitoring the transverse size of the BEC after ballistic expansion. Good agreement to theory has been found. As an application, one-dimensional BECs have been used to implement a microscopic magnetic field sensor. This sensor enables field measurements in a region which is not accessible for today's state-of-the-art sensors. A field sensitivity of 4 nT at a spatial resolution of 3 micrometer has been demonstrated. To investigate the phase-properties of a one-dimensional BEC, coherent splitting of a one-dimensional BEC has been achieved and interferometry on an atom chip has been demonstrated.
Author : Jakob Reichel
Publisher : John Wiley & Sons
ISBN 13 : 3527643923
Total Pages : 412 pages
Book Rating : 4.5/5 (276 download)
Download or read book Atom Chips written by Jakob Reichel and published by John Wiley & Sons. This book was released on 2011-08-24 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Thorsten Schumm
Publisher :
ISBN 13 :
Total Pages : 189 pages
Book Rating : 4.:/5 (494 download)
Download or read book Bose-Einstein Condensates in Magnetic Double Well Potentials written by Thorsten Schumm and published by . This book was released on 2006 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents two realizations of magnetic double well potentials for Bose-Einstein condensates (BECs) on atom chips. One approach utilizes static magnetic traps, created by current carrying micro wires, manipulating the atoms close to the chip surface. As in all other atom chip experiments, cold atom clouds are found to break up to pieces in the vicinity of the trapping structure. A careful study of the underlying magnetic potential could attribute this fragmentation to current deviations, caused by corrugation of the wire edges. To avoid this effect, a new fabrication technique (electron beam lithography, gold evaporation) was employed to create 700nm cross section wires of significantly improved quality. A BEC was created and successfully transferred to the sub-micron structure, generating the double well. The general qualification of the device could be demonstrated by splitting cold thermal atomic clouds. However, numerous technical problems do yet prevent us from performing the experiment with BECs. The second approach pursued in this thesis combines static magnetic traps with oscillating (RF) magnetic fields and realizes a double well in the emerging adiabatic dressed potential. This scheme can be realized far from the chip surface, fragmentation does not occur and Bose-Einstein condensates could be split successfully. We realize a matter wave interferometer by recombining the two clouds in free expansion. The arising interference patterns reveal a narrow distribution of the relative phase, indicating a coherent splitting process. We monitor the phase evolution throughout and after the splitting and control it by deliberately unbalancing the double well.
Author : Ran Salem
Publisher :
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.:/5 (659 download)
Download or read book Bose-Einstein Condensate on the Atom Chip written by Ran Salem and published by . This book was released on 2010 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shannon Whitlock
Publisher :
ISBN 13 :
Total Pages : 120 pages
Book Rating : 4.:/5 (225 download)
Download or read book Bose-Einstein Condensates on a Magnetic Film Atom Chip written by Shannon Whitlock and published by . This book was released on 2007 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kai Dieckmann
Publisher :
ISBN 13 : 9789090145471
Total Pages : 122 pages
Book Rating : 4.1/5 (454 download)
Download or read book Bose-Einstein Condensation with High Atom Number in a Deep Magnetic Trap written by Kai Dieckmann and published by . This book was released on 2001 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Klaus D. Sattler
Publisher : CRC Press
ISBN 13 : 1466505095
Total Pages : 766 pages
Book Rating : 4.4/5 (665 download)
Download or read book Fundamentals of Picoscience written by Klaus D. Sattler and published by CRC Press. This book was released on 2013-09-26 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now ubiquitous in public discussions about cutting-edge science and technology, nanoscience has generated many advances and inventions, from the development of new quantum mechanical methods to far-reaching applications in electronics and medical diagnostics. Ushering in the next technological era, Fundamentals of Picoscience focuses on the instrumentation and experiments emerging at the picometer scale. One picometer is the length of a trillionth of a meter. Compared to a human cell of typically ten microns, this is roughly ten million times smaller. In this state-of-the-art book, international scientists and researchers at the forefront of the field present the materials and methods used at the picoscale. They address the key challenges in developing new instrumentation and techniques to visualize and measure structures at this sub-nanometer level. With numerous figures, the book will help you: Understand how picoscience is an extension of nanoscience Determine which experimental technique to use in your research Connect basic studies to the development of next-generation picoelectronic devices The book covers various approaches for detecting, characterizing, and imaging at the picoscale. It then presents picoscale methods ranging from scanning tunneling microscopy (STM) to spectroscopic approaches at sub-nanometer spatial and energy resolutions. It also covers novel picoscale structures and picometer positioning systems. The book concludes with picoscale device applications, including single molecule electronics and optical computers. Introductions in each chapter explain basic concepts, define technical terms, and give context to the main material.
Author : René Gerritsma
Publisher :
ISBN 13 :
Total Pages : 103 pages
Book Rating : 4.:/5 (777 download)
Download or read book Permanent Magnetic Atom Chips and Bose-Einstein Condensation written by René Gerritsma and published by . This book was released on 2007 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Manuel Vogel
Publisher : Springer Nature
ISBN 13 : 3031554205
Total Pages : 467 pages
Book Rating : 4.0/5 (315 download)
Download or read book Particle Confinement in Penning Traps written by Manuel Vogel and published by Springer Nature. This book was released on with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Thomas Beth
Publisher : John Wiley & Sons
ISBN 13 : 3527606084
Total Pages : 471 pages
Book Rating : 4.5/5 (276 download)
Download or read book Quantum Information Processing written by Thomas Beth and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum processing and communication is emerging as a challenging technique at the beginning of the new millennium. This is an up-to-date insight into the current research of quantum superposition, entanglement, and the quantum measurement process - the key ingredients of quantum information processing. The authors further address quantum protocols and algorithms. Complementary to similar programmes in other countries and at the European level, the German Research Foundation (DFG) realized a focused research program on quantum information. The contributions - written by leading experts - bring together the latest results in quantum information as well as addressing all the relevant questions.
Author : Tarik Berrada
Publisher : Springer
ISBN 13 : 3319272330
Total Pages : 244 pages
Book Rating : 4.3/5 (192 download)
Download or read book Interferometry with Interacting Bose-Einstein Condensates in a Double-Well Potential written by Tarik Berrada and published by Springer. This book was released on 2015-12-17 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Guennadi A. Kouzaev
Publisher : Springer Science & Business Media
ISBN 13 : 3642303102
Total Pages : 542 pages
Book Rating : 4.6/5 (423 download)
Download or read book Applications of Advanced Electromagnetics written by Guennadi A. Kouzaev and published by Springer Science & Business Media. This book was released on 2012-10-30 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text, directed to the microwave engineers and Master and PhD students, is on the use of electromagnetics to the development and design of advanced integrated components distinguished by their extended field of applications. The results of hundreds of authors scattered in numerous journals and conference proceedings are carefully reviewed and classed. Several chapters are to refresh the knowledge of readers in advanced electromagnetics. New techniques are represented by compact electromagnetic–quantum equations which can be used in modeling of microwave-quantum integrated circuits of future In addition, a topological method to the boundary value problem analysis is considered with the results and examples. One extended chapter is for the development and design of integrated components for extended bandwidth applications, and the technology and electromagnetic issues of silicon integrated transmission lines, transitions, filters, power dividers, directional couplers, etc are considered. Novel prospective interconnects based on different physical effects are reviewed as well. The ideas of topology is applicable to the electromagnetic signaling and computing, when the vector field maps can carry discrete information, and this area and the results in topological signaling obtained by different authors are analyzed, including the recently designed predicate logic processor operating spatially represented signal units. The book is rich of practical examples, illustrations, and references and useful for the specialists working at the edge of contemporary technology and electromagnetics.
Author : Matthias Weidemüller
Publisher : John Wiley & Sons
ISBN 13 : 3527635076
Total Pages : 519 pages
Book Rating : 4.5/5 (276 download)
Download or read book Interactions in Ultracold Gases written by Matthias Weidemüller and published by John Wiley & Sons. This book was released on 2011-02-10 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arising from a workshop, this book surveys the physics of ultracold atoms and molecules taking into consideration the latest research on ultracold phenomena, such as Bose Einstein condensation and quantum computing. Several reputed authors provide an introduction to the field, covering recent experimental results on atom and molecule cooling as well as the theoretical treatment.
Author : Edem Tsikata
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (59 download)
Download or read book The Characterization of Bose-Einstein Condensates on an Atom Chip written by Edem Tsikata and published by . This book was released on 2002 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dian-jiun Han
Publisher :
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.:/5 (436 download)
Download or read book Bose-Einstein condensation of rubidium-87 atoms in a magnetic trap written by Dian-jiun Han and published by . This book was released on 1998 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
