Interferometer-type structures for guided atoms

Dumke, Rainer; Müther, T.; Scharnberg, F.; Volk, M.; Ertmer, W.; Birkl, G.

doi:10.1109/eqec.2003.1314130

Cited by 5 publications

(6 citation statements)

References 24 publications

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“…15). Such a situation could be realized experimentally by combining optical lattices with atom-chip technology (Hänsel et al, 2001;Ott et al, 2001) or in optical micro-lens arrays (Dumke et al, 2002). The system is described by the discrete nonlinear Schrödinger (DNLS) equation, a classical variant of the Bose-Hubbard model appropriate for a BEC in a periodic potential in the tight binding limit (Morsch and Oberthaler, 2006).…”

Section: Matter Wave Scattering In Bose-einstein Condensatesmentioning

confidence: 99%

Fano resonances in nanoscale structures

2010

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Nowadays nanotechnology allows to scale-down various important devices (sensors, chips, fibres, etc), and, thus, opens up new horizon for their applications. Nevertheless, the efficiency most of them is still based on the fundamental physical phenomena, such as resonances. Thus, the understanding of the resonance phenomena will be beneficial. One of the well-known examples is the resonant enhancement of the transmission known as Breit-Wigner resonances, which can be described by a Lorentzian function. But, in many physical systems the scattering of waves involves propagation along different paths, and, as a consequence, results in interference phenomena, where constructive interference corresponds to resonant enhancement and destructive interference to resonant suppression of the transmission. Recently, a variety of experimental and theoretical work has revealed such patterns in different branches of physics. The purpose of this Review is to demonstrate that this kind of resonant scattering is related to the Fano resonances, known from atomic physics. One of the main features of the Fano resonances is the asymmetric profile. The asymmetry comes from the close coexistence of resonant transmission and resonant reflection. Fano successfully explained such a phenomenon in his seminal paper in 1961 in terms of interaction of a discrete (localized) state with a continuum of propagation modes. It allows to describe both resonant enhancement and resonant suppression in a unified manner. All of these properties can be demonstrated in the frame of a very simple model, which will be used throughout the Review to show that resonant reflections observed in different complex systems are indeed closely related to the Fano resonances.

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Section: Matter Wave Scattering In Bose-einstein Condensatesmentioning

confidence: 99%

Fano resonances in nanoscale structures

2010

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“…New approaches also combine atom chip technology with optical atom guiding [279]. Recent experiments realised trapping and guiding of atoms in light fields shaped with microlens arrays and cylindrical microlenses [131,280]. These experiments also demonstrated integrated beamsplitters and interferometric setups.…”

Section: Optical Guidesmentioning

confidence: 99%

“…Guiding structures open a new way to realise a beamsplitter by splitting a matter wave guide in two new branches [300,280]. The question on the coherence properties of this new type of beamsplitter and their possible use in interferometric structures is currently under investigation [301,302] The search for coherent high momentum transfer non-dispersive matter wave optical elements is still an active field of research, which has strong impact on future applications.…”

Section: Mirrors and Beamsplittersmentioning

confidence: 99%

Physics with coherent matter waves

Bongs¹,

Sengstock²

2004

Rep. Prog. Phys.

176

190

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Abstract. This review discusses progress in the new field of coherent matter waves, in particular with respect to Bose-Einstein condensates. We give a short introduction to Bose-Einstein condensation and the theoretical description of the condensate wavefunction. We concentrate on the coherence properties of this new type of matter wave as a basis for fundamental physics and applications. The main part of this review treats various measurements and concepts in the physics with coherent matter waves. In particular we present phase manipulation methods, atom lasers, nonlinear atom optics, optical elements, interferometry and physics in optical lattices. We give an overview of the state of the art in the respective fields and discuss achievements and challenges for the future. § To whom correspondence should be addressed (sengstock@physnet.uni-hamburg.de) Physics with coherent matter waves 2

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“…Propagation of coherent matter waves along a linear optical dipole guide formed by a collimated laser beam has been demonstrated [36,37], and overlapping laser beams have been used to create beamsplitters for guided cold atoms [38] and for an atom laser [39]. Micro-optics have been used to create beamsplitter and interferometer optical dipole potentials for cold atoms [40]. In the limit where the moving BEC completely fills the waveguide, superfluid flow has been observed in toroidal optical dipole potentials [41,42,43,44] and atom-SQUID devices have been demonstrated [45,46,47].…”

Section: Introductionmentioning

confidence: 99%

Integrated coherent matter wave circuits

Ryu

Boshier

2015

New J. Phys.

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An integrated coherent matter wave circuit is a single device, analogous to an integrated optical circuit, in which coherent de Broglie waves are created and then launched into waveguides where they can be switched, divided, recombined, and detected as they propagate. Applications of such circuits include guided atom interferometers, atomtronic circuits, and precisely controlled delivery of atoms. Here we report experiments demonstrating integrated circuits for guided coherent matter waves. The circuit elements are created with the painted potential technique, a form of time-averaged optical dipole potential in which a rapidly moving, tightly focused laser beam exerts forces on atoms through their electric polarizability. The source of coherent matter waves is a Bose-Einstein condensate (BEC). We launch BECs into painted waveguides that guide them around bends and form switches, phase coherent beamsplitters, and closed circuits. These are the basic elements that are needed to engineer arbitrarily complex matter wave circuitry.

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Interferometer-type structures for guided atoms

Cited by 5 publications

References 24 publications

Fano resonances in nanoscale structures

Fano resonances in nanoscale structures

Physics with coherent matter waves

Integrated coherent matter wave circuits

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