Niels Gregersen

Niels Gregersen

Associate Professor

DTU FOTONIK
Department of Photonics Engineering

Quantum and Laser Photonics

Technical University of Denmark

Ørsteds Plads

Building 345A, room 274

2800 Kgs. Lyngby

Ph.
Fax +45 45 93 65 81
E-mail ngre@fotonik.dtu.dk
ORCID 0000-0002-8252-8989
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2017
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Type-II quantum-dot-in-nanowire structures with large oscillator strength for optical quantum gate applications

Taherkhani, Masoomeh ; Willatzen, Morten ; Mørk, Jesper ; Gregersen, Niels ; McCutcheon, Dara P. S.
in journal: Physical Review B (ISSN: 2469-9950) (DOI: http://dx.doi.org/10.1103/PhysRevB.96.125408), vol: 96, issue: 12, 2017

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: http://dx.doi.org/10.1103/PhysRevB.96.125408

2016
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Ultra-low power all-optical switch using a single quantum dot embedded in a photonic wire

Nguyen, H.A. ; Grange, T. ; Malik, N.S. ; Dupuy, E. ; Tumanov, D. ; de Assis, P. L. ; Yeo, I. ; Fratini, F. ; Gregersen, Niels ; Auffeves, A. ; Gerard, J.M. ; Claudon, J.
Presented at:
Wilhelm und Else Heraeus-Seminar, 2016, Bad Honnef

Type: Conference abstract for conference (Peer reviewed)

Status: Published     |    Year: 2016

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On-Demand Single Photons with High Extraction Efficiency and Near-Unity Indistinguishability from a Resonantly Driven Quantum Dot in a Micropillar

Ding, Xing ; He, Yu ; Duan, Z.-C. ; Gregersen, Niels ; Chen, M.-C. ; Unsleber, S. ; Maier, Sebastian ; Schneider, Christian ; Kamp, Martin ; Höfling, Sven ; Lu, Chao-Yang ; Pan, Jian-Wei
in journal: Physical Review Letters (ISSN: 0031-9007) (DOI: http://dx.doi.org/10.1103/PhysRevLett.116.020401), vol: 116, 2016

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2016     |    DOI: http://dx.doi.org/10.1103/PhysRevLett.116.020401

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A fiber-coupled quantum-dot on a photonic tip

Cadeddu, Davide ; Teissier, Jean ; Braakman, Floris R. ; Gregersen, Niels ; Stepanov, Petr ; Gérard, Jean Michel ; Claudon, Julien ; Warburton, Richard J. ; Poggio, Martino ; Munsch, Mathieu
in journal: Applied Physics Letters (ISSN: 0003-6951) (DOI: http://dx.doi.org/10.1063/1.4939264), vol: 108, 2016

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2016     |    DOI: http://dx.doi.org/10.1063/1.4939264

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Highly indistinguishable on-demand resonance fluorescence photons from a deterministic quantum dot micropillar device with 74% extraction efficiency

Gregersen, Niels
in journal: Optics Express (ISSN: 1094-4087) (DOI: http://dx.doi.org/10.1364/OE.24.008539), vol: 24, issue: 8, 2016

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2016     |    DOI: http://dx.doi.org/10.1364/OE.24.008539

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Spectral symmetry of Fano resonances in a waveguide coupled to a microcavity

Østerkryger, Andreas Dyhl ; de Lasson, Jakob Rosenkrantz ; Heuck, Mikkel ; Yu, Yi ; Mørk, Jesper ; Gregersen, Niels
in journal: Optics Letters (ISSN: 0146-9592) (DOI: http://dx.doi.org/10.1364/OL.41.002065), vol: 41, issue: 9, pages: 2065-2068, 2016

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2016     |    DOI: http://dx.doi.org/10.1364/OL.41.002065

 

Efficient formalism for treating tapered structures using the Fourier modal method

Østerkryger, Andreas Dyhl ; Gregersen, Niels
part of: Proceedings of SPIE, 2016, SPIE - International Society for Optical Engineering,
Presented at:
Optical Modelling and Design IV, 2016, Brussels

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2016     |    DOI: http://dx.doi.org/10.1117/12.2225582

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Ultra-low power all-optical switch using a single quantum dot embedded in a photonic wire

Nguyen, H.A. ; Grange, T. ; Malik, N.S. ; Dupuy, E. ; Tumanov, D. ; de Assis, P. L. ; Yeo, I. ; Fratini, F. ; Gregersen, Niels ; Auffeves, A. ; Gerard, J.M. ; Claudon, J. ; Poizat, Jean-Philippe
Presented at:
9th International Conference on Quantum Dots, 2016, Jeju

Type: Conference abstract for conference (Peer reviewed)

Status: Published     |    Year: 2016

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CdSe quantum dot in vertical ZnSe nanowire and photonic wire for efficient single-photon emission

Cremel, Thibault ; Bellet-Amalric, Edith ; Cagnon, Laurent ; Gregersen, Niels ; Kheng, Kuntheak
Presented at:
9th International Conference on Quantum Dots, 2016, Jeju

Type: Conference abstract for conference (Peer reviewed)

Status: Published     |    Year: 2016

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Open-geometry Fourier modal method: modeling nanophotonic structures in infinite domains

Häyrynen, Teppo ; de Lasson, Jakob Rosenkrantz ; Gregersen, Niels
in journal: Journal of the Optical Society of America A (ISSN: 0740-3232) (DOI: http://dx.doi.org/10.1364/JOSAA.33.001298), vol: 33, issue: 7, pages: 1298-1306, 2016

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2016     |    DOI: http://dx.doi.org/10.1364/JOSAA.33.001298