CORDIS
EU research results

CORDIS

English EN

All-solid-state quantum electrodynamics in photonic crystals

Objective

In quantum electrodynamics a range of fundamental processes are driven by omnipresent vacuum fluctuations. Photonic crystals can control vacuum fluctuations and thereby the fundamental interaction between light and matter. We will conduct experiments on quantum dots in photonic crystals and observe novel quantum electrodynamics effects including fractional decay and the modified Lamb shift. Furthermore, photonic crystals will be explored for shielding sensitive quantum-superposition states against decoherence.

Defects in photonic crystals allow novel functionalities enabling nanocavities and waveguides. We will use the tight confinement of light in a nanocavity to entangle a quantum dot and a photon, and explore the scalability. Controlled ways of generating scalable and robust quantum entanglement is the essential missing link limiting quantum communication and quantum computing. A single quantum dot coupled to a slowly propagating mode in a photonic crystal waveguide will be used to induce large nonlinearities at the few-photon level.

Finally we will explore a novel route to enhanced light-matter interaction employing controlled disorder in photonic crystals. In disordered media multiple scattering of light takes place and can lead to the formation of Anderson-localized modes. We will explore cavity quantum electrodynamics in Anderson-localized random cavities considering disorder a resource and not a nuisance, which is the traditional view.

The main focus of the project will be on optical experiments, but fabrication of photonic crystals and detailed theory will be carried out as well. Several of the proposed experiments will constitute milestones in quantum optics and may pave the way for all-solid-state quantum communication with quantum dots in photonic crystals.
Leaflet | Map data © OpenStreetMap contributors, Credit: EC-GISCO, © EuroGeographics for the administrative boundaries

Principal Investigator

Peter Lodahl (Dr.)

Host institution

KOBENHAVNS UNIVERSITET

Address

Norregade 10
1165 Kobenhavn

Denmark

Activity type

Higher or Secondary Education Establishments

EU Contribution

€ 1 137 954

Principal Investigator

Peter Lodahl (Dr.)

Administrative Contact

Ivan Kristoffersen (Mr.)

Beneficiaries (2)

Sort alphabetically

Sort by EU Contribution

Expand all

KOBENHAVNS UNIVERSITET

Denmark

EU Contribution

€ 1 137 954

DANMARKS TEKNISKE UNIVERSITET

Denmark

EU Contribution

€ 61 694,40

Project information

Grant agreement ID: 258292

Status

Closed project

  • Start date

    1 December 2010

  • End date

    30 November 2015

Funded under:

FP7-IDEAS-ERC

  • Overall budget:

    € 1 199 648,40

  • EU contribution

    € 1 199 648,40

Hosted by:

KOBENHAVNS UNIVERSITET

Denmark