Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)

Controllable asymmetric matter-wave beam splitter and ring potential on an atom chip

Seung Jin Kim, S. T. Gang, Hoon Yu, Jung Bog Kim

Published Aug 1, 2015• 0 citations
Publisher

Abstract

We have constructed an asymmetric matter-wave beam splitter and a ring potential on an atom chip by applying rf-field parallel to the quantization axis added to perpendicular rf-fields. Versatile controllability on the potentials can be obtained.
DOI
10.1109/cleopr.2015.7376513

Related papers

Controllable asymmetric double well and ring potential on an atom chip

S. J. Kim, Hoon Yu, S. T. Gang +2 more

We have constructed an asymmetric matter-wave beam splitter and a ring potential on an atom chip with Bose-Einstein condensates using radio-frequency dressing. By applying rf field parallel to the quantization axis in the vicinity of the static trap minima added to perpendicular rf fields, versatile controllability on the asymmetry of rf-dressed potentials is realized. Asymmetry of the rf-induced double well is controlled over a wide range without discernible displacement of each well. Formation of an isotropic ring potential on an atom chip is achieved by compensating the gradient due to gravity and inhomogeneous coupling strength. In addition, position and rotation velocity of a BEC along the ring geometry are controlled by the relative phase and the frequency difference between the rf fields, respectively.

arXiv:1506.01013•Physical Review A•Mar 4, 2016•17 citations

High momentum splitting of matter-waves by an atom chip field gradient beam-splitter

Shimon Machluf, Yonathan Japha, R. Folman

The splitting of matter-waves into a superposition of spatially separated states is a fundamental tool for studying the basic tenets of quantum mechanics and other theories, as well as a building block for numerous technological applications. We report the realization of a matter-wave beam splitter based on magnetic field gradients on an atom chip, which can be used for freely propagating or trapped atoms in a Bose-Einstein condensate or a thermal state. It has a wide dynamic range of momentum transfer and operation time. Differential velocities exceeding 0.5 m/s can be achieved in a few micro-seconds. The beam splitter may enable a wide range of applications, such as, fundamental studies of many-body entanglement and dephasing processes, probing classical and quantum properties of nearby solids, and metrology of rotation, acceleration and gravity on a chip scale.

arXiv:1208.2526•Aug 13, 2012•0 citations

Matter-wave beam splitter on an atom chip for a portable atom interferometer

S. J. Kim, H. Yu, S. T. Gang +1 more

arXiv:1601.06901•Applied Physics B•Apr 21, 2017•9 citations

Longitudinal character of atom-chip-based rf-dressed potentials

J.J.P. van Es, S. Whitlock, T. Fernholz +2 more

We experimentally investigate the properties of radio-frequency-dressed potentials for Bose-Einstein condensates on atom chips. The three-dimensional potential forms a connected pair of parallel waveguides. We show that rf-dressed potentials are robust against the effect of small magnetic-field variations on the trap potential. Long-lived dipole oscillations of condensates induced in the rf-dressed potentials can be tuned to a remarkably low damping rate. We study a beam splitter for Bose-Einstein condensates and show that a propagating condensate can be dynamically split in two vertically separated parts and guided along two paths. The effect of gravity on the potential can be tuned and compensated for using a rf-field gradient.

arXiv:0802.0362•Physical Review A•Jun 24, 2008•30 citations

Coherent manipulation of Bose-Einstein condensates with radio-frequency adiabatic potentials on atom chips

Sebastian Hofferberth

During this thesis a novel trapping and manipulation technique for neutral atoms on atom chips has been developed and experimentally implemented. Radio-frequency (rf) coupling of internal states of magnetically trapped atoms results in versatile microscopic potentials, which overcome various limitations of static magnetic traps. An extensive experimental analysis of this new technique has been carried out, exploring the state-dependency of the rf potentials and the possible realization of non-trivial trapping geometries. Based on these results, the first coherent matter wave beam splitter on an atom chip has been realized, demonstrating for the first time the all-magnetic coherent splitting of a condensate. This new atom optical tool has then been applied to investigate the phase-properties of one-dimensional Bose-Einstein condensates. The potential configuration developed during this thesis provides direct access to the phase fluctuations in the system and has allowed the first time-resolved study of equilibrium properties and non-equilibrium dynamics in a one-dimensional Bose gas.

•Jan 1, 2007•4 citations

Diffractive matter wave optics in time

Stefan Bernet, Roland Abfalterer, Claudia Keller +2 more

We demonstrate a programmable sideband modulator for atoms. A controlled phase modulation is engraved on an atomic matter wave by interaction with a frequency-modulated light potential. The principle allows for tailoring atomic optical elements, e.g., temporal lenses, adjustable beam splitters, and holograms, in the time domain. As an illustration we present the time analog of a blazed grating that is generating asymmetric sidebands of atomic matter waves.

Journal of the Optical Society of America B•Dec 1, 1998•7 citations
We have constructed an asymmetric matter-wave beam splitter and a ring potential on an atom chip with Bose-Einstein condensates using radio-frequency dressing. By applying rf field parallel to the quantization axis in the vicinity of the static trap minima added to perpendicular rf fields, versatile controllability on the asymmetry of rf-dressed potentials is realized. Asymmetry of the rf-induced double well is controlled over a wide range without discernible displacement of each well. Formation of an isotropic ring potential on an atom chip is achieved by compensating the gradient due to gravity and inhomogeneous coupling strength. In addition, position and rotation velocity of a BEC along the ring geometry are controlled by the relative phase and the frequency difference between the rf fields, respectively.
The splitting of matter-waves into a superposition of spatially separated states is a fundamental tool for studying the basic tenets of quantum mechanics and other theories, as well as a building block for numerous technological applications. We report the realization of a matter-wave beam splitter based on magnetic field gradients on an atom chip, which can be used for freely propagating or trapped atoms in a Bose-Einstein condensate or a thermal state. It has a wide dynamic range of momentum transfer and operation time. Differential velocities exceeding 0.5 m/s can be achieved in a few micro-seconds. The beam splitter may enable a wide range of applications, such as, fundamental studies of many-body entanglement and dephasing processes, probing classical and quantum properties of nearby solids, and metrology of rotation, acceleration and gravity on a chip scale.
We experimentally investigate the properties of radio-frequency-dressed potentials for Bose-Einstein condensates on atom chips. The three-dimensional potential forms a connected pair of parallel waveguides. We show that rf-dressed potentials are robust against the effect of small magnetic-field variations on the trap potential. Long-lived dipole oscillations of condensates induced in the rf-dressed potentials can be tuned to a remarkably low damping rate. We study a beam splitter for Bose-Einstein condensates and show that a propagating condensate can be dynamically split in two vertically separated parts and guided along two paths. The effect of gravity on the potential can be tuned and compensated for using a rf-field gradient.
During this thesis a novel trapping and manipulation technique for neutral atoms on atom chips has been developed and experimentally implemented. Radio-frequency (rf) coupling of internal states of magnetically trapped atoms results in versatile microscopic potentials, which overcome various limitations of static magnetic traps. An extensive experimental analysis of this new technique has been carried out, exploring the state-dependency of the rf potentials and the possible realization of non-trivial trapping geometries. Based on these results, the first coherent matter wave beam splitter on an atom chip has been realized, demonstrating for the first time the all-magnetic coherent splitting of a condensate. This new atom optical tool has then been applied to investigate the phase-properties of one-dimensional Bose-Einstein condensates. The potential configuration developed during this thesis provides direct access to the phase fluctuations in the system and has allowed the first time-resolved study of equilibrium properties and non-equilibrium dynamics in a one-dimensional Bose gas.