Controlled manipulation of light by cooperative response of atoms in an optical lattice

Jenkins, S. D.; Ruostekoski, Janne

doi:10.1103/physreva.86.031602

Cited by 112 publications

(92 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Second, maybe paradoxically, the same independent-atom model applies as the leading approximation also to the Bose-Einstein condensate. Third, atoms confined in optical lattices provide structured arrays where the positions of atoms in the Mott-insulator states can be sampled [15,22]. Fourth, we have also done one-dimensional simulations of a noninteracting one-component Fermi gas at zero temperature [13,52].…”

Section: B Classical-electrodynamics Solution For Light Propagationmentioning

confidence: 99%

“…These methods, whether called classicalelectrodynamics simulations or coupled-dipole simulations, are now a routine theoretical tool [2,4,7,8,[14][15][16][17][18][19][20][21][22][23][24][25][26]. Closely related numerical techniques based on the analysis of the eigenstates of the coupled system of the light and the atoms [15,[27][28][29][30][31][32] or density matrices and quantum trajectories [33][34][35] are also widely used today. Other ideas drawn from the theory of radiative transfer [36,37] and multiple scattering [38,39], enhanced with numerics, also have potential to make inroads into the questions about light propagation in atomic media [40].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Exact electrodynamics versus standard optics for a slab of cold dense gas

Javanainen

Ruostekoski

et al. 2017

Phys. Rev. A

Self Cite

View full text Add to dashboard Cite

We study light propagation through a slab of cold gas using both the standard electrodynamics of polarizable media and massive atom-by-atom simulations of the electrodynamics. The main finding is that the predictions from the two methods may differ qualitatively when the density of the atomic sample ρ and the wave number of resonant light k satisfy ρk −3 1. The reason is that the standard electrodynamics is a mean-field theory, whereas for sufficiently strong light-mediated dipole-dipole interactions the atomic sample becomes strongly correlated. The deviations from mean-field theory appear to scale with the parameter ρk −3 , and we demonstrate noticeable effects already at ρk −3 10 −2 . In dilute gases and in gases with an added inhomogeneous broadening the simulations show shifts of the resonance lines in qualitative agreement with the predicted Lorentz-Lorenz shift and "cooperative Lamb shift," but the quantitative agreement is unsatisfactory. Our interpretation is that the microscopic basis for the local-field corrections in electrodynamics is not fully understood.

show abstract

Section: B Classical-electrodynamics Solution For Light Propagationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Exact electrodynamics versus standard optics for a slab of cold dense gas

Javanainen

Ruostekoski

et al. 2017

Phys. Rev. A

Self Cite

View full text Add to dashboard Cite

show abstract

“…Spin lattices are a subject of widespread contemporary interest, and manifest in such diverse systems as quantum degenerate gases [51,52], polar molecules [49,53] and cold atoms [47,54] in optical lattices, and electric and magnetic multipoles in plasmonic nanostructures [55,56,57,58]. Understanding the cooperative behaviour in lattices b therefore has implications for a number of different applications, from predicting shifts and lifetimes in optical lattice clocks [59], use in narrow linewidth superradiant lasers [60,61], subwavelength light control [14], to many body spin models [40,49]) and simulation of condensed matter frustration and spin ice [58,62,63].…”

Section: Why Lattices?mentioning

confidence: 99%

“…These have been realised experimentally in a number of different systems, including quantum dots [2], nuclei [3], ions [4,5,6], Bose-Einstein condensates [7], cold atoms [8,9,10,11] and atoms at room-temperature [12]. Additional cooperative phenomena can include highly directional scattering [13], excitation localization [14,15,16], and modified optical transmission and scattering [17,18,19]. There is therefore considerable current interest in understanding these phenomena.…”

Section: Cooperativitymentioning

confidence: 99%

Cooperative Interactions in Lattices of Atomic Dipoles

Bettles

2017

Springer Theses

View full text Add to dashboard Cite

Coherent radiation by an ensemble of scatterers can dramatically modify the ensemble's optical response. This can include, for example, enhanced and suppressed decay rates (superradiance and subradiance respectively), energy level shifts, and highly directional scattering. This behaviour is referred to as cooperative, since the scatterers in the ensemble behave as a collective rather than independently. In this Thesis, we investigate the cooperative behaviour of one-and two-dimensional arrays of interacting atoms.We calculate the extinction cross-section of these arrays, analysing how the cooperative eigenmodes of the ensemble contribute to the overall extinction. Typically, the dominant eigenmode if the atoms are driven by a uniform or Gaussian light beam is the mode in which the atomic dipoles oscillate in phase together and with the same polarisation as the driving field. The eigenvalues of this mode become strongly resonant as the atom number is increased. For a one-dimensional array, the location of these resonances occurs when the atomic spacing is an integer or half integer multiple of the wavelength, thus behaving analogously to a single atom in a cavity. The interference between this mode and additional eigenmodes can result in Fano-like asymmetric lineshapes in the extinction.We find that the kagome lattice in particular exhibits an exceptionally strong interference lineshape, like a cooperative analog of electromagnetically induced transparency.Triangular, square and hexagonal lattices however are typically dominated by one single mode which, for lattice spacings of the order of a wavelength, can be highly subradiant.This can result in near-perfect extinction of a resonant driving field, signifying a significant increase in the atom-light coupling efficiency. We show that this extinction is robust to possible experimental imperfections.

show abstract

“…The school of mathematics theory group of Professor Janne Ruostekoski and Dr Stewart Jenkins (another Leverhulme fellow on my grant) provided considerable input in several aspects of our programme by developing microscopic and quantum mechanical descriptions of the collective response of metamaterials [95,[104][105][106][107][108].…”

Section: Developing Metamaterials Technology: Switching and Tunabilitymentioning

confidence: 99%

Metamaterials at the University of Southampton and beyond

Zheludev¹

2017

J. Opt.

View full text Add to dashboard Cite

At the University of Southampton, research on metamaterials started in 2000 with a paper describing a metallic microstructure, comprising an ensemble of fully metallic 'molecules'. In the years since then, metamaterials have evolved from an approach for designing unusual electromagnetic properties by structuring matter at the sub-wavelength scale to become a universal paradigm for active functional media with optical properties on demand at any given point in time and space. Metamaterials are now recognized as a promising enabling technology and one of the most buoyant and exciting research disciplines at the crossroads between photonics and nanoscience. Many 'made in Southampton' concepts have influenced the global research community, and we are now working in collaboration with our sister research centre in Nanyang Technological University, Singapore. In this article, I provide a historical overview of the metamaterials research field, from early studies to recent developments through the lens of the Southampton group, and discuss promising future directions.

show abstract

Controlled manipulation of light by cooperative response of atoms in an optical lattice

Cited by 112 publications

References 38 publications

Exact electrodynamics versus standard optics for a slab of cold dense gas

Exact electrodynamics versus standard optics for a slab of cold dense gas

Cooperative Interactions in Lattices of Atomic Dipoles

Metamaterials at the University of Southampton and beyond

Contact Info

Product

Resources

About