Publications | Page 4 | Theoretical Optics & Photonics

2018

We theoretically analyze the hybrid Mie-exciton optical modes arising from the strong coupling of excitons in organic dyes or transition-metal dichalcogenides with the Mie resonances of high-...

Endurance of quantum coherence due to particle indistinguishability in noisy quantum networks

A. Perez-Leija, D. Guzman-Silva, R. de J. Leon-Montiel, M. Gräfe, M. Heinrich, H. Moya-Cessa, K. Busch, and A. Szameit (2018)

Nature Partner Journals (npj): Quantum Information 4:45

Quantum coherence, the physical property underlying fundamental phenomena such as multi-particle interference and entanglement, has emerged as a valuable resource upon which modern technologies...

Multiphoton discrete fractional Fourier dynamics in waveguide beam splitters

K. Tschernig, R. de J. Leon-Montiel, O. S. Magana-Loaiza, A. Szameit, K. Busch, and A. Perez-Leija (2018)

Journal of the Optical Society of America B 35:1985

We demonstrate that when a waveguide beam splitter (BS) is excited by N indistinguishable photons, the arising multiphoton states evolve in a way as if they were coupled to each other with...

Design study of random spectrometers for applications at optical frequencies

P. Varytis, D. Huynh, W. Hartmann, W. Pernice, and K. Busch (2018)

Optics Letters 43:3180

Compact spectrometers based on disordered planar waveguides exhibit a rather high resolution with a relatively small footprint compared to conventional spectrometers. This is achieved by...

Nonequilibrium atom-surface interaction with lossy multilayer structures

M. Oelschläger, K. Busch, and F. Intravaia (2018)

Physical Review A 97:062507

The impact of lossy multilayer structures on nonequilibrium atom-surface interactions is discussed. Specifically, the focus lies on a fully non-Markovian and nonequilibrium description of quantum...

A slab waveguide source for discontinuous Galerkin time-domain methods

D. Huynh, P. Varytis, and K. Busch (2018)

Proceedings of SPIE 10688, Photonics for Solar Energy Systems VII, 106880V

An essential device in opto-electronics is the optical waveguide. In the following we present a way to incorporate a waveguide eld source into numerical time-domain simulations via the total field...

Modified dipole-dipole interaction and dissipation in an atomic ensemble near surfaces

R. Jones, J. A. Needham, I. Lesanovsky, F. Intravaia, and B. Olmos

Physical Review A 97:053841

We study how the radiative properties of a dense ensemble of...

Waveguide-integrated single photon spectrometer based on tailored disorder (Conference Presentation)

W. Hartmann, P. Varytis, K. Busch, W. Pernice

SPIE Photonics Europe, 2018, Strasbourg, France

Integrated nanophotonic circuits allow for realizing complex optical functionality in a compact and reproducible fashion through high-yield nanofabrication. Typically configured for single-mode...

Anomalous resonances of an optical microcavity with a hyperbolic metamaterial core

E. Travkin, T. Kiel, S. Sadofev, K. Busch, O. Benson, and S. Kalusniak (2018)

Physical Review B 97:195133

We embed a hyperbolic metamaterial based on stacked layer pairs of epitaxially grown ZnO/ZnO:Ga in a monolithic optical microcavity, and we investigate the arising unique resonant effects...

Fluorescence enhancement by a dark plasmon mode

M. Peter, J.F.M.Werra, C. Friesen, D. Achnitz, K. Busch, and S. Linden (2018)

Appl. Phys. B 124:83

We investigate the fluorescence properties of colloidal quantum dots coupled to gold nanowire antennas. By varying the wire length, the plasmon modes of the nanoantennas are successively tuned...

Modal expansions in periodic photonic systems with material loss and dispersion

C. Wolff, K. Busch, and N. A. Mortensen (2018)

Physical Review B 97:104203

We study band-structure properties of periodic optical systems composed of lossy and intrinsically dispersive materials. To this end, we develop an analytical framework based on...

Plasmonic modes in nanowire dimers: A study based on the hydrodynamic Drude model including nonlocal and nonlinear effects

M. Moeferdt, T. Kiel, T. Sproll, F. Intravaia, and K. Busch (2018)

Physical Review B 97:75431

A combined analytical and numerical study of the modes in two distinct plasmonic nanowire systems is presented. The computations are based on a discontinuous Galerkin time-domain approach, and a...

Two-particle four-point correlations in dynamically disordered tight-binding networks

A. Perez-Leija, R. de J Leon-Montiel, J. Sperling, H. Moya-Cessa, A. Szameit, and K. Busch (2018)

Journal of Physics B 51:024002

We use the concept of two-particle probability amplitude to derive the stochastic evolution equation for two-particle four-point correlations in tight-binding networks affected by diagonal dynamic...

2017

Quantum coherences of indistinguishable particles

J. Sperling, A. Perez-Leija, K. Busch, and I. A. Walmsley (2017)

Physical Review A 96:032334

We study different notions of quantum correlations in multipartite systems of distinguishable and indistinguishable particles. Based on the definition of quantum coherence for a single particle, we...

Dynamical Casimir effect in stochastic systems: Photon harvesting through noise

R. Roman-Ancheyta, I. Ramos-Prieto, A. Perez-Leija, K. Busch, and R. de J- Leon-Montiel (2017)

Physical Review A 96:032501

We theoretically investigate the dynamical Casimir effect in a single-mode cavity endowed with a driven off-resonant mirror. We explore the dynamics of photon generation as a function of the ratio...

Mid-infrared beam splitter for ultrashort pulses

C. Somma, K. Reimann, M. Woerner, T. Kiel, K. Busch, A. Braun, M. Matalla, K. Ickert, and O. Krüger (2017)

Optics Letters 42: 2918

A design is presented for a beam splitter suitable for ultrashort pulses in the mid-infrared and terahertz spectral range consisting of a structured metal layer on a diamond substrate. Both the...

Near-field study on the transition from localized to propagating plasmons on 2D nano-triangles

T. Weber, T. Kiel, S. Irsen, K. Busch, and S. Linden (2017)

Optics Express 25:16947

In this manuscript we report on a near field study of two-dimensional plasmonic gold nano-triangles using electron energy loss spectroscopy in combination with scanning transmission electron...

Limitations of Particle-Based Spasers

G. Kewes, K. Herrmann, R. Rodríguez-Oliveros, A. Kuhlicke, O. Benson, and K. Busch (2017)

Physical Review Letters 118:237402

We present a semiclassical analytic model for spherical core-shell surface plasmon lasers. Within this model, we drop the widely used one-mode approximations in favor of fully electromagnetic Mie...

Device performance tuning of Ge gate-all-around tunneling field effect transistors by means of GeSn: Potential and challenges

E.G. Rolseth, A. Blech, I.A. Fischer, Y. Hashad, R. Koerner, K. Kostecki, A. Kruglov, V.S. Senthil Srinivasan, M. Weiser, T. Wendav, K. Busch, and J. Schulze (2017)

IEEE Conference on Information and Communication Technology, Electronics and Microelectronics (MIPRO) 2017:57

In this paper we report experimental results on the fabrication and characterization of vertical Ge gate-all-around p-channel TFETs, utilizing GeSn as a channel material. Through two sample series...

Spatial dispersion in atom-surface quantum friction

D. Reiche, D. A. R. Dalvit, K. Busch, and F. Intravaia (2017)

Physical Review B 95:155448

We investigate the influence of spatial dispersion on atom-surface quantum friction. We show that for atom-surface separations shorter than the carrier’s mean free path within the material, the...