Projects per year
Abstract
Quantum dots (QDs) are semiconductor nanostructures in which a three dimensional potential trap produces an electronic quantum confinement, thus mimicking the behaviour of single atomic dipole-like transitions. However unlike atoms, QDs can be incorporated into solid state photonic devices such as cavities or waveguides that enhance the light-matter interaction. A near unit efficiency light-matter interaction is essential for deterministic, scalable quantum information (QI) devices. In this limit, a single photon input into the device will undergo a large rotation of the polarization of the light field due to the strong interaction with the QD. In this paper we measure a macroscopic (~ 6o) phase shift of light as a result of the interaction with a negatively charged QD coupled to a low quality-factor (Q~ 290) pillar microcavity. This unexpectedly large rotation angle demonstrates this simple low Q-factor design would enable near deterministic light-matter interactions.
Original language | English |
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Article number | 241409(R) |
Number of pages | 5 |
Journal | Physical Review B |
Volume | 93 |
Issue number | 24 |
DOIs | |
Publication status | Published - 21 Jun 2016 |
Structured keywords
- QETLabs
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Dive into the research topics of 'Charged quantum dot micropillar system for deterministic light-matter interactions'. Together they form a unique fingerprint.Projects
- 3 Finished
Profiles
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Dr Edmund G H Harbord
- Department of Electrical & Electronic Engineering - Lecturer in Quantum Communication Technologies
- QET Labs
Person: Academic , Member
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Professor Ruth Oulton
- Department of Electrical & Electronic Engineering - Professor of Quantum Photonics
- School of Physics - Professor
- The Bristol Centre for Nanoscience and Quantum Information
- QET Labs
- Photonics
Person: Academic , Member
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Professor John G Rarity
- Department of Electrical & Electronic Engineering - Professor of Optical Communication Systems
- The Bristol Centre for Nanoscience and Quantum Information
- QET Labs
- Photonics
Person: Academic , Member, Group lead