Experiments Versus Modelling in Quantum Dot Pillar Microcavities

J G Rarity; Y-LD Ho; R Gibson; C Hu; MJ Cryan; I J Craddock; C J Railton; D Sanvitto; A Darei; M Hopkinson; J Timpson; AM Fox; MS Skolnick

doi:10.1109/ICTON.2006.248226

Experiments Versus Modelling in Quantum Dot Pillar Microcavities

J G Rarity
, Y-LD Ho
, R Gibson
, C Hu
, MJ Cryan
, I J Craddock
, C J Railton
, D Sanvitto
, A Darei
, M Hopkinson
, J Timpson
, AM Fox
, MS Skolnick

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

1 Citation (Scopus)

Abstract

Recently, single photon sources have been realised by coupling InAs quantum-dots into circular micro-pillar microcavities based on distributed Bragg reflectors (DBRs). These sources can be highly efficient because the high semiconductor refractive index collects a large fraction of the spontaneous emission into the waveguide mode. We have modelled emission from circular, square, elliptical and rectangular pillars using the finite difference time domain (FDTD) method and see enhanced emission into the cavity mode and improved efficiency for coupling light out of the microcavity. The cavity Q-factors can be very high even when the pillar diameter (dimension) is comparable to the emission wavelength. In the elliptical and rectangular cavities the modes separate (in frequency) into a high-Q resonance with polarisation parallel to the long axis and a lower Q-factor resonance with polarisation orthogonal to the long axis. We compare our modelling with preliminary measurements made on micro-pillar microcavity samples containing a layer of low density InAs dots at the cavity centre

Translated title of the contribution	Experiments Versus Modelling in Quantum Dot Pillar Microcavities
Original language	English
Title of host publication	International Conference on Transparent Optical Networks, Nottingham, UK
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	67 - 70
Number of pages	4
Volume	1
ISBN (Print)	1424402352, 1424402360
DOIs	https://doi.org/10.1109/ICTON.2006.248226
Publication status	Published - 18 Jun 2006

Bibliographical note

Conference Proceedings/Title of Journal: International Conference on Transparent Optical Networks, 2006 (ICTON2006)

Research Groups and Themes

QETLabs
Photonics and Quantum

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Rarity, J. G., Ho, Y.-LD., Gibson, R., Hu, C., Cryan, MJ., Craddock, I. J., Railton, C. J., Sanvitto, D., Darei, A., Hopkinson, M., Timpson, J., Fox, AM., & Skolnick, MS. (2006). Experiments Versus Modelling in Quantum Dot Pillar Microcavities. In International Conference on Transparent Optical Networks, Nottingham, UK (Vol. 1, pp. 67 - 70). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ICTON.2006.248226

@inproceedings{b6d0d4f2d36043348ab6b2909c2088e9,

title = "Experiments Versus Modelling in Quantum Dot Pillar Microcavities",

abstract = "Recently, single photon sources have been realised by coupling InAs quantum-dots into circular micro-pillar microcavities based on distributed Bragg reflectors (DBRs). These sources can be highly efficient because the high semiconductor refractive index collects a large fraction of the spontaneous emission into the waveguide mode. We have modelled emission from circular, square, elliptical and rectangular pillars using the finite difference time domain (FDTD) method and see enhanced emission into the cavity mode and improved efficiency for coupling light out of the microcavity. The cavity Q-factors can be very high even when the pillar diameter (dimension) is comparable to the emission wavelength. In the elliptical and rectangular cavities the modes separate (in frequency) into a high-Q resonance with polarisation parallel to the long axis and a lower Q-factor resonance with polarisation orthogonal to the long axis. We compare our modelling with preliminary measurements made on micro-pillar microcavity samples containing a layer of low density InAs dots at the cavity centre",

author = "Rarity, \{J G\} and Y-LD Ho and R Gibson and C Hu and MJ Cryan and Craddock, \{I J\} and Railton, \{C J\} and D Sanvitto and A Darei and M Hopkinson and J Timpson and AM Fox and MS Skolnick",

note = "Conference Proceedings/Title of Journal: International Conference on Transparent Optical Networks, 2006 (ICTON2006)",

year = "2006",

month = jun,

day = "18",

doi = "10.1109/ICTON.2006.248226",

language = "English",

isbn = "1424402352",

volume = "1",

pages = "67 -- 70",

booktitle = "International Conference on Transparent Optical Networks, Nottingham, UK",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

address = "United States",

}

Rarity, JG, Ho, Y-LD, Gibson, R, Hu, C, Cryan, MJ , Craddock, IJ, Railton, CJ, Sanvitto, D, Darei, A, Hopkinson, M, Timpson, J, Fox, AM & Skolnick, MS 2006, Experiments Versus Modelling in Quantum Dot Pillar Microcavities. in International Conference on Transparent Optical Networks, Nottingham, UK. vol. 1, Institute of Electrical and Electronics Engineers (IEEE), pp. 67 - 70. https://doi.org/10.1109/ICTON.2006.248226

Experiments Versus Modelling in Quantum Dot Pillar Microcavities. / Rarity, J G; Ho, Y-LD; Gibson, R et al.
International Conference on Transparent Optical Networks, Nottingham, UK. Vol. 1 Institute of Electrical and Electronics Engineers (IEEE), 2006. p. 67 - 70.

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

TY - GEN

T1 - Experiments Versus Modelling in Quantum Dot Pillar Microcavities

AU - Rarity, J G

AU - Ho, Y-LD

AU - Gibson, R

AU - Hu, C

AU - Cryan, MJ

AU - Craddock, I J

AU - Railton, C J

AU - Sanvitto, D

AU - Darei, A

AU - Hopkinson, M

AU - Timpson, J

AU - Fox, AM

AU - Skolnick, MS

N1 - Conference Proceedings/Title of Journal: International Conference on Transparent Optical Networks, 2006 (ICTON2006)

PY - 2006/6/18

Y1 - 2006/6/18

N2 - Recently, single photon sources have been realised by coupling InAs quantum-dots into circular micro-pillar microcavities based on distributed Bragg reflectors (DBRs). These sources can be highly efficient because the high semiconductor refractive index collects a large fraction of the spontaneous emission into the waveguide mode. We have modelled emission from circular, square, elliptical and rectangular pillars using the finite difference time domain (FDTD) method and see enhanced emission into the cavity mode and improved efficiency for coupling light out of the microcavity. The cavity Q-factors can be very high even when the pillar diameter (dimension) is comparable to the emission wavelength. In the elliptical and rectangular cavities the modes separate (in frequency) into a high-Q resonance with polarisation parallel to the long axis and a lower Q-factor resonance with polarisation orthogonal to the long axis. We compare our modelling with preliminary measurements made on micro-pillar microcavity samples containing a layer of low density InAs dots at the cavity centre

AB - Recently, single photon sources have been realised by coupling InAs quantum-dots into circular micro-pillar microcavities based on distributed Bragg reflectors (DBRs). These sources can be highly efficient because the high semiconductor refractive index collects a large fraction of the spontaneous emission into the waveguide mode. We have modelled emission from circular, square, elliptical and rectangular pillars using the finite difference time domain (FDTD) method and see enhanced emission into the cavity mode and improved efficiency for coupling light out of the microcavity. The cavity Q-factors can be very high even when the pillar diameter (dimension) is comparable to the emission wavelength. In the elliptical and rectangular cavities the modes separate (in frequency) into a high-Q resonance with polarisation parallel to the long axis and a lower Q-factor resonance with polarisation orthogonal to the long axis. We compare our modelling with preliminary measurements made on micro-pillar microcavity samples containing a layer of low density InAs dots at the cavity centre

U2 - 10.1109/ICTON.2006.248226

DO - 10.1109/ICTON.2006.248226

M3 - Conference Contribution (Conference Proceeding)

SN - 1424402352

SN - 1424402360

VL - 1

SP - 67

EP - 70

BT - International Conference on Transparent Optical Networks, Nottingham, UK

PB - Institute of Electrical and Electronics Engineers (IEEE)

ER -

Experiments Versus Modelling in Quantum Dot Pillar Microcavities

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