Optical Dipole Traps for Neutral Atoms

Grimm, Rudolf; Weidemüller, Matthias; Ovchinnikov, Yurii B.

doi:10.1016/s1049-250x(08)60186-x

Cited by 1,359 publications

(1,354 citation statements)

References 150 publications

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“…13(b) we show the electric dipole moment for the p-wave PES for B = 0 G as a function of E. With increasing electric field strength D el grows quadratically. To verify this we present a corresponding semi-analytical result for the electric dipole moment where we expanded the state |ψ(r; R eq ; B = 0, E) in a perturbative series up to the O(E 2 ): |ψ(r; R eq ; 0, E) = |ψ 0 (r; R eq ) + E n =0 C (1) n |ψ n (r; R eq ) + E 2 n =0 C (2) n |ψ n (r; R eq ) .…”

Section: Electric Dipole Momentmentioning

confidence: 99%

“…In this expansion |ψ n (r; R eq ) indicate the field-free electronic states and C (1,2) n are the expansion coefficients given by standard perturbation theory [20]. Inserting this ansatz into (10) and keeping terms up to O(E) and O(E 2 ) we obtain the linear term (red) and quadratic term (green) approximations according to Fig.…”

Section: Electric Dipole Momentmentioning

confidence: 99%

“…The external degrees of freedom can be accessed by designing and switching almost arbitrarily shaped traps [1][2][3] which are created by external electric, magnetic or electromagnetic fields. Furthermore, interatomic interaction strength can be tuned via magnetic or optical Feshbach resonances [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Ultralong-range Rydberg molecules in combined electric and magnetic fields

Kurz

Schmelcher

2014

J. Phys. B: At. Mol. Opt. Phys.

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We investigate the impact of combined electric and magnetic fields on the structure of ultralongrange polar Rydberg molecules. Our focus is hereby on the parallel as well as the crossed field configuration taking into account both the s-wave and p-wave interactions of the Rydberg electron and the neutral ground state atom. We show the strong impact of the p-wave interaction on the ultralong-range molecular states for a pure B-field configuration. In the presence of external fields the angular degrees of freedom acquires vibrational character and we encounter two-and three-dimensional oscillatory adiabatic potential energy surfaces for the parallel and crossed field configuration, respectively. The equilibrium configurations of local potential wells can be controlled via the external field parameters for both field configurations depending of the specific degree of electronic excitation. This allows to tune the molecular alignment and orientation. The resulting electric dipole moment is in the order of several kDebye and the rovibrational level spacings are in the range of 2 − 250 MHz. Both properties are analyzed with of varying field strengths.

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Section: Electric Dipole Momentmentioning

confidence: 99%

Section: Electric Dipole Momentmentioning

confidence: 99%

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Ultralong-range Rydberg molecules in combined electric and magnetic fields

Kurz

Schmelcher

2014

J. Phys. B: At. Mol. Opt. Phys.

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“…In order to utilize the Feshbach resonance in the non-magnetically trappable F = 1, m F = 1 state of 7 Li it is necessary to work using an optical dipole trap [31]. In both experiments initial cooling of the atomic sample was carried out in a magnetic trap using the F = 2, m F = 2 state before transferring to a dipole trap and flipping the spin state of the atoms to suppress two-body loss mechanisms and allow access to the Feshbach resonance.…”

Section: Observation Of Bright Solitary Matter Wavesmentioning

confidence: 99%

Spontaneous Symmetry Breaking, Self-Trapping, and Josephson Oscillations

Malomed¹

2013

Progress in Optical Science and Photonics

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In recent years, bright soliton-like structures composed of gaseous Bose-Einstein condensates have been generated at ultracold temperature. The experimental capacity to precisely engineer the nonlinearity and potential landscape experienced by these solitary waves offers an attractive platform for fundamental study of solitonic structures. The presence of three spatial dimensions and trapping implies that these are strictly distinct objects to the true soliton solutions. Working within the zero-temperature mean-field description, we explore the solutions and stability of bright solitary waves, as well as their interactions. Emphasis is placed on elucidating their similarities and differences to the true bright soliton. The rich behaviour introduced in the bright solitary waves includes the collapse instability and symmetry-breaking collisions. We review the experimental formation and observation of bright solitary matter waves to date, and compare to theoretical predictions. Finally we discuss the current state-of-the-art of this area, including beyond-mean-field descriptions, exotic bright solitary waves, and proposals to exploit bright solitary waves in interferometry and as surface probes.

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“…The dipole force [2] in principle avoids such effects. It can act towards or away from regions of high intensity, depending upon the sign of the detuning of the laser from the radiative transition, and incoherent scattering is reduced by moving far from resonance [3,4], where spontaneous emission is low.…”

Section: Introductionmentioning

confidence: 99%

Cavity-enhanced toroidal dipole force traps for dark-field seeking species

Freegarde

Dholakia

2002

Optics Communications

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Dipole force traps for dark-field seeking states of atoms and molecules require regions of low intensity that are completely surrounded by a brighter optical field. Confocal cavities allow the resonant enhancement of these interesting transverse mode superpositions, and put deep far-off-resonance traps within reach of low-power diode lasers. In this paper, we show how an array of dark-field rings may be created simply using a single Gaussian beam. Such a geometry lends itself to the study of toroidal Bose-Einstein condensates. Ó

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Optical Dipole Traps for Neutral Atoms

Cited by 1,359 publications

References 150 publications

Ultralong-range Rydberg molecules in combined electric and magnetic fields

Ultralong-range Rydberg molecules in combined electric and magnetic fields

Spontaneous Symmetry Breaking, Self-Trapping, and Josephson Oscillations

Cavity-enhanced toroidal dipole force traps for dark-field seeking species

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