Optical control of the emission direction of a quantum dot

Isaac Luxmoore; Nicholas A Wasley; Andrew J. Ramsay; Ruth Oulton; Andrew Ramsay; Arthur C T Thijssen; Maxime Hughes; A. Mark Fox; Maurice Skolnick

doi:10.1063/1.4845975

Optical control of the emission direction of a quantum dot

Isaac Luxmoore, Nicholas A Wasley, Andrew J. Ramsay, Ruth Oulton, Andrew Ramsay, Arthur C T Thijssen, Maxime Hughes, A. Mark Fox, Maurice Skolnick

Research output: Contribution to journal › Article (Academic Journal) › peer-review

27 Citations (Scopus)

Abstract

Using the helicity of a non-resonant excitation laser, control over the emission direction of an InAs/GaAs quantum dot is demonstrated. The quantum dot is located off-center in a crossed-waveguide structure, such that photons of opposite circular polarization are emitted into opposite waveguide directions. By preferentially exciting spin-polarized excitons, the direction of emission can therefore be controlled. The directional control is quantified by using the ratio of the intensity of the light coupled into the two waveguides, which reaches a maximum of ±35%.

Original language	English
Article number	1.4845975
Pages (from-to)	241102
Number of pages	3
Journal	Applied Physics Letters
Volume	103
Issue number	24
DOIs	https://doi.org/10.1063/1.4845975
Publication status	Published - 9 Dec 2013

Structured keywords

QETLabs

Keywords

quantum dot
spin
nanophotonics

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10.1063/1.4845975

http://scitation.aip.org/content/aip/journal/apl/103/24/10.1063/1.4845975

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NUCLEAR NANOMAGNETS FOR QUANTUM OPTICAL SPIN DEVICES
Oulton, R.
29/09/08 → 29/03/14
Project: Research

Career Acceleration Fellowship
Ruth Oulton (Recipient)
1 Oct 2008
Activity: Other activity types › Fellowship awarded competitively

HPC (High Performance Computing) Facility
Sadaf R Alam (Manager), Steven A Chapman (Manager), Polly E Eccleston (Other), Simon H Atack (Other) & D A G Williams (Manager)
Facility/equipment: Facility

Cite this

@article{892c1c90b05c4a91a7b829b04b6d107f,

title = "Optical control of the emission direction of a quantum dot",

abstract = "Using the helicity of a non-resonant excitation laser, control over the emission direction of an InAs/GaAs quantum dot is demonstrated. The quantum dot is located off-center in a crossed-waveguide structure, such that photons of opposite circular polarization are emitted into opposite waveguide directions. By preferentially exciting spin-polarized excitons, the direction of emission can therefore be controlled. The directional control is quantified by using the ratio of the intensity of the light coupled into the two waveguides, which reaches a maximum of ±35%.",

keywords = "quantum dot, spin, nanophotonics",

author = "Isaac Luxmoore and Wasley, {Nicholas A} and {J. Ramsay}, Andrew and Ruth Oulton and Andrew Ramsay and Thijssen, {Arthur C T} and Maxime Hughes and Fox, {A. Mark} and Maurice Skolnick",

year = "2013",

month = dec,

day = "9",

doi = "10.1063/1.4845975",

language = "English",

volume = "103",

pages = "241102",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics (AIP)",

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TY - JOUR

T1 - Optical control of the emission direction of a quantum dot

AU - Luxmoore, Isaac

AU - Wasley, Nicholas A

AU - J. Ramsay, Andrew

AU - Oulton, Ruth

AU - Ramsay, Andrew

AU - Thijssen, Arthur C T

AU - Hughes, Maxime

AU - Fox, A. Mark

AU - Skolnick, Maurice

PY - 2013/12/9

Y1 - 2013/12/9

N2 - Using the helicity of a non-resonant excitation laser, control over the emission direction of an InAs/GaAs quantum dot is demonstrated. The quantum dot is located off-center in a crossed-waveguide structure, such that photons of opposite circular polarization are emitted into opposite waveguide directions. By preferentially exciting spin-polarized excitons, the direction of emission can therefore be controlled. The directional control is quantified by using the ratio of the intensity of the light coupled into the two waveguides, which reaches a maximum of ±35%.

AB - Using the helicity of a non-resonant excitation laser, control over the emission direction of an InAs/GaAs quantum dot is demonstrated. The quantum dot is located off-center in a crossed-waveguide structure, such that photons of opposite circular polarization are emitted into opposite waveguide directions. By preferentially exciting spin-polarized excitons, the direction of emission can therefore be controlled. The directional control is quantified by using the ratio of the intensity of the light coupled into the two waveguides, which reaches a maximum of ±35%.

KW - quantum dot

KW - spin

KW - nanophotonics

U2 - 10.1063/1.4845975

DO - 10.1063/1.4845975

M3 - Article (Academic Journal)

VL - 103

SP - 241102

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 24

M1 - 1.4845975

ER -

Optical control of the emission direction of a quantum dot

Abstract

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Projects

NUCLEAR NANOMAGNETS FOR QUANTUM OPTICAL SPIN DEVICES

Activities

Career Acceleration Fellowship

Equipment

HPC (High Performance Computing) Facility

Cite this