Direct measurement of the van der Waals interaction between an atom and its images in a micron-sized cavity

Sandoghdar, Vahid; Sukenik, C. I.; Hinds, E. A.; Haroche, S.

doi:10.1103/physrevlett.68.3432

Cited by 190 publications

(146 citation statements)

References 17 publications

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“…The first precise measurement of the van der Waals coupling between an atom and a surface was reported in Ref. 15; later on some more experiments have followed. 16 The experimental difficulties are, in fact, in pair with the theoretical ones, since fully ab initio calculations are also challenging.…”

Section: Introductionmentioning

confidence: 99%

Cluster-surface and cluster-cluster interactions:Ab initiocalculations and modeling of asymptotic van der Waals forces

et al. 2008

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We present fully ab initio calculations of van der Waals coefficients for two different situations: ͑i͒ the interaction between hydrogenated silicon clusters and ͑ii͒ the interactions between these nanostructures and a nonmetallic surface ͑a silicon or a silicon carbide surface͒. The methods used are very efficient and allow the calculation of systems containing hundreds of atoms. The results obtained are further analyzed and understood with the help of simple models. These models can be of interest for molecular-dynamics simulations of silicon nanostructures on surfaces, where they can give a very fast yet sufficiently accurate determination of the van der Waals interaction at large separations.

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Section: Introductionmentioning

confidence: 99%

Cluster-surface and cluster-cluster interactions:Ab initiocalculations and modeling of asymptotic van der Waals forces

et al. 2008

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“…Further from the surface (larger than the thermal wavelength of photons, λ T ) the interaction becomes dominated by the thermal fluctuation of the electromagnetic field [135]. The inherent advantage of directly probing the atom-surface interaction has prompted the recent proposal of a new generation of experiments which aim to exploit the precision and control offered by atomic physics and ultracold quantum gases to push the measurement of short-range forces into a new regime [136][137][138][139]. Indeed a number of proof-of-principle experiments have already utilised ultracold atomic gases to explore the short range van der Waals and Casimir-Polder potentials [140][141][142][143].…”

Section: Soliton Surface Probes and Quantum Reflectionmentioning

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 first successful precision experiments were on the wall -sphere system [5,6]. Next, the force between a neutral atom and a wall was observed [7,8,9], as well as between two metallic neutral parallel plates [10,11]. For the atom -atom Casimir -Polder force, only indirect evidences of their existence have been yet obtained.…”

Section: Introductionmentioning

confidence: 99%

Casimir-Polder force density between an atom and a conducting wall

Messina

Passante

2007

Phys. Rev. A

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In this paper we calculate the Casimir -Polder force density (force per unit area acting on the elements of the surface) on a metallic plate placed in front of a neutral atom. To obtain the force density we use the quantum operator associated to the electromagnetic stress tensor. We explicitly show that the integral of this force density over the plate reproduces the total force acting on the plate. This result shows that, although the force is obtained as a sum of surface element -atom contributions, the stress -tensor method includes also nonadditive components of Casimir -Polder forces in the evaluation of the force acting on a macroscopic object.

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Direct measurement of the van der Waals interaction between an atom and its images in a micron-sized cavity

Cited by 190 publications

References 17 publications

Cluster-surface and cluster-cluster interactions:Ab initiocalculations and modeling of asymptotic van der Waals forces

Cluster-surface and cluster-cluster interactions:Ab initiocalculations and modeling of asymptotic van der Waals forces

Spontaneous Symmetry Breaking, Self-Trapping, and Josephson Oscillations

Casimir-Polder force density between an atom and a conducting wall

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