Sub­pro­ject A5

Unbreakable and breakable quantum censorship

J. Pinske, J. Sperling, Physical Review A 109 (2024).

Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides

M. Hammer, S. Babel, H. Farheen, L. Padberg, J.C. Scheytt, C. Silberhorn, J. Förstner, Optics Express 32 (2024) 22878.

Nonlinear Dielectric Nanoresonators and Metasurfaces: Toward Efficient Generation of Entangled Photons

P.R. Sharapova, S.S. Kruk, A.S. Solntsev, Laser & Photonics Reviews (2023).

Room-Temperature Electrical Field-Enhanced Ultrafast Switch in Organic Microcavity Polariton Condensates

J. De, X. Ma, F. Yin, J. Ren, J. Yao, S. Schumacher, Q. Liao, H. Fu, G. Malpuech, D. Solnyshkov, Journal of the American Chemical Society (JACS) 145 (2023) 1557–1563.

Tailoring the directive nature of optical waveguide antennas

H. Farheen, L.-Y. Yan, T. Leuteritz, S. Qiao, F. Spreyer, C. Schlickriede, V. Quiring, C. Eigner, C. Silberhorn, T. Zentgraf, S. Linden, V. Myroshnychenko, J. Förstner, in: S.M. García-Blanco, P. Cheben (Eds.), Integrated Optics: Devices, Materials, and Technologies XXVII, SPIE, 2023, p. 124241E.

Optimized silicon antennas for optical phased arrays

H. Farheen, A. Strauch, J.C. Scheytt, V. Myroshnychenko, J. Förstner, in: S.M. García-Blanco, P. Cheben (Eds.), Integrated Optics: Devices, Materials, and Technologies XXVII, SPIE, 2023, p. 124241D.

How to suppress radiative losses in high-contrast integrated Bragg gratings

M. Hammer, H. Farheen, J. Förstner, Journal of the Optical Society of America B 40 (2023) 862.

Temporal sorting of optical multi-wave-mixing processes in semiconductor quantum dots

T. Meier, S. Grisard, A.V. Trifonov, H. Rose, R. Reichhardt, M. Reichelt, C. Schneider, M. Kamp, S. Höfling, M. Bayer, I.A. Akimov, Arxiv:2302.02480 (2023).

Detector entanglement: Quasidistributions for Bell-state measurements

J. Sperling, I. Gianani, M. Barbieri, E. Agudelo, Physical Review A 107 (2023).

Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography

C. Lüders, M. Pukrop, F. Barkhausen, E. Rozas, C. Schneider, S. Höfling, J. Sperling, S. Schumacher, M. Aßmann, Physical Review Letters 130 (2023).

A multi-mode super-fano mechanism for enhanced third harmonic generation in silicon metasurfaces

D. Hähnel, C. Golla, M. Albert, T. Zentgraf, V. Myroshnychenko, J. Förstner, C. Meier, Light: Science & Applications 12 (2023) 97.

Efficient Modeling and Tailoring of Nonlinear Wavefronts in Dielectric Metasurfaces

D. Hähnel, J. Förstner, V. Myroshnychenko, ACS Photonics (2023).

Theoretical analysis of four-wave mixing on semiconductor quantum dot ensembles with quantum light

H. Rose, S. Grisard, A.V. Trifonov, R. Reichhardt, M. Reichelt, M. Bayer, I.A. Akimov, T. Meier, in: Ultrafast Phenomena and Nanophotonics XXVII, SPIE, 2023.

Revealing the nonadiabatic tunneling dynamics in solid-state high harmonic generation

R. Zuo, X. Song, S. Ben, T. Meier, W. Yang, Physical Review Research 5 (2023).

Optimized, Highly Efficient Silicon Antennas for Optical Phased Arrays

H. Farheen, A. Strauch, J.C. Scheytt, V. Myroshnychenko, J. Förstner, Photonics and Nanostructures - Fundamentals and Applications 58 (2023) 101207.

On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs

D. Bauch, D. Siebert, K. Jöns, J. Förstner, S. Schumacher, Advanced Quantum Technologies (2023).

Optimization of optical waveguide antennas for directive emission of light

H. Farheen, T. Leuteritz, S. Linden, V. Myroshnychenko, J. Förstner, Journal of the Optical Society of America B 39 (2022) 83.

Resonant evanescent excitation of OAM modes in a high-contrast circular step-index fiber

M. Hammer, L. Ebers, J. Förstner, in: D.L. Andrews, E.J. Galvez, H. Rubinsztein-Dunlop (Eds.), Complex Light and Optical Forces XVI, SPIE, 2022, p. 120170F.

Broadband optical Ta2O5 antennas for directional emission of light

H. Farheen, L.-Y. Yan, V. Quiring, C. Eigner, T. Zentgraf, S. Linden, J. Förstner, V. Myroshnychenko, Optics Express 30 (2022) 19288.

Light Scattering by Large Densely Packed Clusters of Particles

Y. Grynko, Y. Shkuratov, S. Alhaddad, J. Förstner, in: A. Kokhanovsky (Ed.), Springer Series in Light Scattering - Volume 8: Light Polarization and Multiple Scattering in Turbid Media, Springer International Publishing, Cham, 2022.

Multiple Rabi rotations of trions in InGaAs quantum dots observed by photon echo spectroscopy with spatially shaped laser pulses

S. Grisard, H. Rose, A.V. Trifonov, R. Reichhardt, D.E. Reiter, M. Reichelt, C. Schneider, M. Kamp, S. Höfling, M. Bayer, T. Meier, I.A. Akimov, Physical Review B 106 (2022).

Microscopic simulations of high harmonic generation from semiconductors

A. Trautmann, R. Zuo, G. Wang, W.-R. Hannes, S. Yang, L.H. Thong, C. Ngo, J. Steiner, M. Ciappina, M. Reichelt, H.T. Duc, X. Song, W. Yang, T. Meier, in: M. Betz, A.Y. Elezzabi (Eds.), Ultrafast Phenomena and Nanophotonics XXVI, 2022.

Coherent contributions to population dynamics in a semiconductor microcavity

J. Paul, H. Rose, E. Swagel, T. Meier, J.K. Wahlstrand, A.D. Bristow, Physical Review B 105 (2022).

Nonlinear down-conversion in a single quantum dot

B. Jonas, D.F. Heinze, E. Schöll, P. Kallert, T. Langer, S. Krehs, A. Widhalm, K. Jöns, D. Reuter, S. Schumacher, A. Zrenner, Nature Communications 13 (2022).

Helical Polariton Lasing from Topological Valleys in an Organic Crystalline Microcavity

T. Long, X. Ma, J. Ren, F. Li, Q. Liao, S. Schumacher, G. Malpuech, D. Solnyshkov, H. Fu, Advanced Science 9 (2022).

Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature

Y. Li, X. Ma, X. Zhai, M. Gao, H. Dai, S. Schumacher, T. Gao, Nature Communications 13 (2022).

Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton

T. Praschan, D. Heinze, D. Breddermann, A. Zrenner, A. Walther, S. Schumacher, Physical Review B 105 (2022).

Unidirectional vortex waveguides and multistable vortex pairs in polariton condensates

X. Gao, W. Hu, S. Schumacher, X. Ma, Optics Letters 47 (2022) 3235–3238.

Switching Off a Microcavity Polariton Condensate near the Exceptional Point

Y. Li, X. Ma, Z. Hatzopoulos, P.G. Savvidis, S. Schumacher, T. Gao, ACS Photonics 9 (2022) 2079–2086.

Nonlinear down-conversion in a single quantum dot

B. Jonas, D.F. Heinze, E. Schöll, P. Kallert, T. Langer, S. Krehs, A. Widhalm, K. Jöns, D. Reuter, A. Zrenner, Nonlinear Down-Conversion in a Single Quantum Dot, LibreCat University, 2022.

Electron polarons in lithium niobate: Charge localization, lattice deformation, and optical response

F. Schmidt, A.L. Kozub, U. Gerstmann, W.G. Schmidt, A. Schindlmayr, in: G. Corradi, L. Kovács (Eds.), New Trends in Lithium Niobate: From Bulk to Nanocrystals, MDPI, Basel, 2022, pp. 231–248.

Bound polaron formation in lithium niobate from ab initio molecular dynamics

M. Krenz, U. Gerstmann, W.G. Schmidt, Applied Physics A 128 (2022) 480.

DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray Tracking

L. Padberg, V. Quiring, A. Bocchini, M. Santandrea, U. Gerstmann, W.G. Schmidt, C. Silberhorn, C. Eigner, Crystals 12 (2022) 1359.

Flexible source of correlated photons based on LNOI rib waveguides

L. Ebers, A. Ferreri, M. Hammer, M. Albert, C. Meier, J. Förstner, P.R. Sharapova, Journal of Physics: Photonics 4 (2022) 025001.

Small-scale online simulations in guided-wave photonics

M. Hammer, in: S.M. García-Blanco, P. Cheben (Eds.), Integrated Optics: Devices, Materials, and Technologies XXVI, SPIE, 2022, p. 1200414.

Quasiparticle energies and optical response of RbTiOPO4 and KTiOAsO4

S. Neufeld, A. Schindlmayr, W.G. Schmidt, Journal of Physics: Materials 5 (2022).

Tilting nondispersive bands in an empty microcavity

Y. Gao, Y. Li, X. Ma, M. Gao, H. Dai, S. Schumacher, T. Gao, Applied Physics Letters 121 (2022).

Electron–Nuclear Coherent Coupling and Nuclear Spin Readout through Optically Polarized V<sub>B</sub><sup>–</sup> Spin States in hBN

F.F. Murzakhanov, G.V. Mamin, S.B. Orlinskii, U. Gerstmann, W.G. Schmidt, T. Biktagirov, I. Aharonovich, A. Gottscholl, A. Sperlich, V. Dyakonov, V.A. Soltamov, Nano Letters 22 (2022) 2718–2724.

Electrochemical performance of KTiOAsO_4 (KTA) in potassium-ion batteries from density-functional theory

A. Bocchini, U. Gerstmann, T. Bartley, H.-G. Steinrück, G. Henkel, W.G. Schmidt, Phys. Rev. Materials 6 (2022) 105401.

Oxygen vacancies in KTiOPO_4: Optical absorption from hybrid DFT

A. Bocchini, U. Gerstmann, W.G. Schmidt, Phys. Rev. B 105 (2022) 205118.

Driven Gaussian quantum walks

P. Held, M. Engelkemeier, S. De, S. Barkhofen, J. Sperling, C. Silberhorn, Physical Review A 105 (2022).

A density-functional theory study of hole and defect-bound exciton polarons in lithium niobate

F. Schmidt, A.L. Kozub, U. Gerstmann, W.G. Schmidt, A. Schindlmayr, Crystals 12 (2022).

Optical evidence of many-body effects in the zincblende Al$_\mathrm{x}$Ga$_\mathrm{1-x}$N alloy system

E. Baron, M. Feneberg, R. Goldhahn, M. Deppe, F. Tacken, D.J. As, Journal of Physics D: Applied Physics (2021).

Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off

T. Henksmeier, M. Eppinger, B. Reineke, T. Zentgraf, C. Meier, D. Reuter, Physica Status Solidi (A) 218 (2021) 2000408.

Optical in-situ temperature management for high-quality ZnO molecular beam epitaxy

M. Albert, C. Golla, C. Meier, Journal of Crystal Growth 557 (2021).

Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays

J. Mundry, F. Spreyer, V. Jmerik, S. Ivanov, T. Zentgraf, M. Betz, Optical Materials Express 11 (2021).

Dielectric travelling wave antennas for directional light emission

T. Leuteritz, H. Farheen, S. Qiao, F. Spreyer, C. Schlickriede, T. Zentgraf, V. Myroshnychenko, J. Förstner, S. Linden, Optics Express 29 (2021).

Multimode integrated SU(1,1) interferometer

A. Ferreri, M. Santandrea, M. Stefszky, K.H. Luo, H. Herrmann, C. Silberhorn, P. Sharapova, in: Conference on Lasers and Electro-Optics, Optica Publishing Group, 2021.

Quantum optical coherence: From linear to nonlinear interferometers

K.H. Luo, M. Santandrea, M. Stefszky, J. Sperling, M. Massaro, A. Ferreri, P. Sharapova, H. Herrmann, C. Silberhorn, Physical Review A (2021).

Quantifying Quantum Coherence in Polariton Condensates

C. Lüders, M. Pukrop, E. Rozas, C. Schneider, S. Höfling, J. Sperling, S. Schumacher, M. Aßmann, PRX Quantum (2021).

Split-ring polariton condensates as macroscopic two-level quantum systems

Y. Xue, I. Chestnov, E. Sedov, E. Kiktenko, A.K. Fedorov, S. Schumacher, X. Ma, A. Kavokin, Physical Review Research 3 (2021).

Spin Polarization, Electron–Phonon Coupling, and Zero-Phonon Line of the NV Center in 3C-SiC

H. Jurgen von Bardeleben, J.-L. Cantin, U. Gerstmann, W.G. Schmidt, T. Biktagirov, Nano Letters 21 (2021) 8119–8125.

Electron polarons in lithium niobate: Charge localization, lattice deformation, and optical response

F. Schmidt, A.L. Kozub, U. Gerstmann, W.G. Schmidt, A. Schindlmayr, Crystals 11 (2021) 542.

Electronic structure of the Si(111)3×3R30∘−B surface from theory and photoemission spectroscopy

H. Aldahhak, C. Hogan, S. Lindner, S. Appelfeller, H. Eisele, W.G. Schmidt, M. Dähne, U. Gerstmann, M. Franz, Physical Review B 103 (2021) 035303.

Potassium titanyl phosphate Z- and Y-cut surfaces from density-functional theory

S. Neufeld, A. Bocchini, W.G. Schmidt, Physical Review Materials (2021).

Ultrafast electric control of cavity mediated single-photon and photon-pair generation with semiconductor quantum dots

D. Bauch, D.F. Heinze, J. Förstner, K. Jöns, S. Schumacher, Physical Review B 104 (2021) 085308.

Polaronic enhancement of second-harmonic generation in lithium niobate

A.L. Kozub, A. Schindlmayr, U. Gerstmann, W.G. Schmidt, Physical Review B 104 (2021) 174110.

Generating two-mode squeezing with multimode measurement-induced nonlinearity

M. Riabinin, P. Sharapova, T. Bartley, T. Meier, Journal of Physics Communications 5 (2021).

HighPerMeshes – A Domain-Specific Language for Numerical Algorithms on Unstructured Grids

S. Alhaddad, J. Förstner, S. Groth, D. Grünewald, Y. Grynko, F. Hannig, T. Kenter, F.-J. Pfreundt, C. Plessl, M. Schotte, T. Steinke, J. Teich, M. Weiser, F. Wende, in: Euro-Par 2020: Parallel Processing Workshops, Cham, 2021.

Selective area growth of cubic gallium nitride on silicon (001) and 3C-silicon carbide (001)

F. Meier, M. Protte, E. Baron, M. Feneberg, R. Goldhahn, D. Reuter, D.J. As, AIP Advances (2021).

Photoluminescence Line‐Shape Analysis of Highly n‐Type Doped Zincblende GaN

E. Baron, R. Goldhahn, M. Deppe, D.J. As, M. Feneberg, Physica Status Solidi (B) (2020).

Molecular Beam Epitaxy Growth and Characterization of Germanium‐Doped Cubic Al x Ga 1− x N

M. Deppe, T. Henksmeier, J.W. Gerlach, D. Reuter, D.J. As, Physica Status Solidi (B) (2020).

Nanoantennas embedded in zinc oxide for second harmonic generation enhancement

R. Volmert, N. Weber, C. Meier, Journal of Applied Physics 128 (2020).

Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics

M. Protte, L. Ebers, M. Hammer, J.P. Höpker, M. Albert, V. Quiring, C. Meier, J. Förstner, C. Silberhorn, T. Bartley, in: OSA Quantum 2.0 Conference, 2020.

Electrically controlled rapid adiabatic passage in a single quantum dot

A. Mukherjee, A. Widhalm, D. Siebert, S. Krehs, N. Sharma, A. Thiede, D. Reuter, J. Förstner, A. Zrenner, Applied Physics Letters 116 (2020) 251103.

Ultrafast electric control of a single QD exciton

J. Förstner, A. Widhalm, A. Mukherjee, S. Krehs, B. Jonas, K. Spychala, J. Förstner, A. Thiede, D. Reuter, A. Zrenner, in: 11th International Conference on Quantum Dots, Munich/Germany, 2020.

Spatially single mode photon pair source at 800 nm in periodically poled Rubidium exchanged KTP waveguides

C. Eigner, L. Padberg, M. Santandrea, H. Herrmann, B. Brecht, C. Silberhorn, Optics Express 28 (2020).

Properties of bright squeezed vacuum at increasing brightness

P.R. Sharapova, G. Frascella, M. Riabinin, A.M. Pérez, O.V. Tikhonova, S. Lemieux, R.W. Boyd, G. Leuchs, M.V. Chekhova, Physical Review Research 2 (2020).

Spatial entanglement and state engineering via four-photon Hong–Ou–Mandel interference

A. Ferreri, V. Ansari, B. Brecht, C. Silberhorn, P.R. Sharapova, Quantum Science and Technology 5 (2020).

Vibrational Raman spectroscopy on adsorbate-induced low-dimensional surface structures

E. Speiser, N. Esser, B. Halbig, J. Geurts, W.G. Schmidt, S. Sanna, Surface Science Reports 75 (2020).

Efficient Bosonic Condensation of Exciton Polaritons in an H-Aggregate Organic Single-Crystal Microcavity.

J. Ren, Q. Liao, H. Huang, Y. Li, T. Gao, X. Ma, S. Schumacher, J. Yao, S. Bai, H. Fu, Nano Letters 20 (2020) 7550–7557.

Formation dynamics of exciton-polariton vortices created by nonresonant annular pumping

B. Berger, D. Schmidt, X. Ma, S. Schumacher, C. Schneider, S. Höfling, M. Assmann, Physical Review B 101 (2020) 245309.

Topological edge states of nonequilibrium polaritons in hollow honeycomb arrays.

X. Ma, Y. Kartashov, A. Ferrando, S. Schumacher, Optics Letters 45 (2020) 5311–5314.

Circular polarization reversal of half-vortex cores in polariton condensates

M. Pukrop, S. Schumacher, X. Ma, Physical Review B 101 (2020) 205301.

Spiraling vortices in exciton-polariton condensates

X. Ma, Y.V. Kartashov, T. Gao, L. Torner, S. Schumacher, Physical Review B 102 (2020) 045309.

Multistable circular currents of polariton condensates trapped in ring potentials.

F. Barkhausen, S. Schumacher, X. Ma, Optics Letters 45 (2020) 1192–1195.

Free and defect-bound (bi)polarons in LiNbO3: Atomic structure and spectroscopic signatures from ab initio calculations

F. Schmidt, A.L. Kozub, T. Biktagirov, C. Eigner, C. Silberhorn, A. Schindlmayr, W.G. Schmidt, U. Gerstmann, Physical Review Research 2 (2020).

Vibration-Driven Self-Doping of Dangling-Bond Wires on Si(553)-Au Surfaces

C. Braun, S. Neufeld, U. Gerstmann, S. Sanna, J. Plaickner, E. Speiser, N. Esser, W.G. Schmidt, Physical Review Letters 124 (2020).

Chiral condensates in a polariton hexagonal ring.

X. Ma, Y. Kartashov, A. Kavokin, S. Schumacher, Optics Letters 45 (2020) 5700–5703.

k.p-based multiband simulations of non-degenerate two-photon absorption in bulk GaAs

W.-R. Hannes, T. Meier, in: M. Betz, A.Y. Elezzabi (Eds.), Ultrafast Phenomena and Nanophotonics XXIV, 2020, p. 112780S.

Strongly nonresonant four-wave mixing in semiconductors

W.-R. Hannes, A. Trautmann, M. Stein, F. Schäfer, M. Koch, T. Meier, Physical Review B 101 (2020) 075203.

Enhanced high-order harmonic generation in semiconductors by excitation with multicolor pulses

X. Song, S. Yang, R. Zuo, T. Meier, W. Yang, Physical Review A 101 (2020).

Understanding gray track formation in KTP: Ti^3+ centers studied from first principles

A. Bocchini, C. Eigner, C. Silberhorn, W.G. Schmidt, U. Gerstmann, Phys. Rev. Materials 4 (2020) 124402.

Realization of all-optical vortex switching in exciton-polariton condensates

X. Ma, B. Berger, M. Aßmann, R. Driben, T. Meier, C. Schneider, S. Höfling, S. Schumacher, Nature Communications 11 (2020) 897.

Influence of the free-electron concentration on the optical properties of zincblende GaN up to 1×1020cm−3

E. Baron, R. Goldhahn, M. Deppe, D.J. As, M. Feneberg, Physical Review Materials (2019).

Germanium doping of cubic GaN grown by molecular beam epitaxy

M. Deppe, J.W. Gerlach, S. Shvarkov, D. Rogalla, H.-W. Becker, D. Reuter, D.J. As, Journal of Applied Physics (2019).

Nonlinear optics in all-dielectric nanoantennas and metasurfaces: a review

B. Sain, C. Meier, T. Zentgraf, Advanced Photonics 1 (2019) 024002.

Nonreciprocal Asymmetric Polarization Encryption by Layered Plasmonic Metasurfaces

D. Frese, Q. Wei, Y. Wang, L. Huang, T. Zentgraf, Nano Letters 19 (2019) 3976–3980.

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