Extremely Large Group-Velocity Dispersion of Line-Defect Waveguides in Photonic Crystal Slabs

Notomi, Masaya; Yamada, Koji; Shinya, Akihiko; Takahashi, J.; Takahashi, Chiharu; Yokohama, I.

doi:10.1103/physrevlett.87.253902

Cited by 983 publications

(558 citation statements)

References 14 publications

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“…the solid curve in the band structure plot), which, in the region below the light line, is lossless in the absence of disorder; the ideal group velocity is then v g = d!=dk. The physics of PC waveguides is rather intriguing, with the defining feature that their engineered waveguide band dispersions yield a vanishing group velocity [72][73][74].…”

Section: The Infinite-size Pc Waveguide: Open System Cavity-qedmentioning

confidence: 99%

On‐chip single photon sources using planar photonic crystals and single quantum dots

Yao

Rao

Hughes³

2010

Laser & Photonics Reviews

155

184

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We review the basic light-matter interactions and optical properties of chip-based single photon sources, that are enabled by integrating single quantum dots with planar photonic crystals. A theoretical framework is presented that allows one to connect to a wide range of quantum light propagation effects in a physically intuitive and straightforward way. We focus on the important mechanisms of enhanced spontaneous emission, and efficient photon extraction, using all-integrated photonic crystal components including waveguides, cavities, quantum dots and output couplers. The limitations, challenges, and exciting prospects of developing on-chip quantum light sources using integrated photonic crystal structures are discussed.A sequence of optical pulses (top right) interacting with a single quantum dot embedded in a photonic crystal system, resulting in the emission of a train of single photons on-chip.

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Section: The Infinite-size Pc Waveguide: Open System Cavity-qedmentioning

confidence: 99%

On‐chip single photon sources using planar photonic crystals and single quantum dots

Yao

Rao

Hughes³

2010

Laser & Photonics Reviews

155

184

View full text Add to dashboard Cite

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“…[15][16][17][18] However, even though ideal structures would in principle support modes of vanishing group velocity, state-of-the-art structures have still only provided a slow down by roughly two orders of magnitude. 15,18 The limits imposed on the minimum attainable group velocity in photonic crystals have been studied in various contexts, such as, e.g., fabrication disorder, 19,20 lossy dielectrics, 21 and finitesize effects. 22 It is the aim of this Brief Report to generalize these findings and to show that they may all be presented in the context of broadening of electromagnetic modes and the resulting induced density of states ͑DOS͒.…”

Section: Limits Of Slow Light In Photonic Crystalsmentioning

confidence: 99%

Limits of slow light in photonic crystals

2008

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While ideal photonic crystals would support modes with a vanishing group velocity, state-of-the art structures have still only provided a slow-down by roughly two orders of magnitude. We find that the induced density of states caused by lifetime broadening of the electromagnetic modes results in the group velocity acquiring a finite value above zero at the band gap edges, while attaining superluminal values within the band gap. Simple scalings of the minimum and maximum group velocities with the imaginary part of the dielectric function or, equivalently, the linewidth of the broadened states, are presented. The results obtained are entirely general and may be applied to any effect which results in a broadening of the electromagnetic states, such as loss, disorder, finite-size effects, etc. This significantly limits the reduction in group velocity attainable via photonic crystals.

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“…10 Alternatively, Bragg resonances are also the cornerstone for the realization of one-dimensional ͑1D͒ integrated nanophotonic structures with slow light propagation. 11,12 In such structures, disorder is undesirable and strongly impacts on the light propagation not only as a source of extrinsic losses 13 but also as catalyst of localization especially in the slow light regime. This apparent antagonism between the use of Bragg resonances for localization or slow light transport requires the determination of the transition region between the propagating and the localization regimes.…”

Section: Introductionmentioning

confidence: 99%

Influence of residual disorder on the anticrossing of Bloch modes probed inkspace

et al. 2008

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We retrieve the dispersion properties of photonic crystal waveguides near the band edge with high experimental accuracy. The dispersion diagram of the waveguide modes in the complex-valued plane is directly measured in the far field by using a Fourier space imaging technique. We show that the investigation of the modes in k space provides a clear signature of the transition between propagating, evanescent, and localized modes. It allows us to determine the impact of the structural disorder and of the dissipation on the group velocity of the propagating wave in the slow light regime.

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Extremely Large Group-Velocity Dispersion of Line-Defect Waveguides in Photonic Crystal Slabs

Cited by 983 publications

References 14 publications

On‐chip single photon sources using planar photonic crystals and single quantum dots

On‐chip single photon sources using planar photonic crystals and single quantum dots

Limits of slow light in photonic crystals

Influence of residual disorder on the anticrossing of Bloch modes probed inkspace

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