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A new generation of single photon emitters: Localised quantum states in van der Waal heterostructures

  • Full or part time
  • Application Deadline
    Applications accepted all year round
  • Funded PhD Project (European/UK Students Only)
    Funded PhD Project (European/UK Students Only)

Project Description

Single-photon sources underpin many leading quantum technologies, from quantum cryptography, enhanced metrology and light-matter interfacing. Among the many solid-state platforms that host single photon emitters (SPE) two-dimensional materials are the least well understood, whilst at the same time providing an entirely unique approach to tailoring the band structure for solid-state SPEs. Given their ultra-thin forms, SPEs in two-dimensional systems avoid losses due to total internal reflection and can readily be coupled to integrated nanophotonic systems e.g. cavities and waveguides. Most importantly however, the nature of two-dimensional material surfaces---weak van der Waal forces bonding individual two-dimensional layers---permits the stacking of separate monolayers, as well as the ability to tune the angle between each crystal, layer-by-layer. It has recently been shown that such structures, known as van der Waal heterostructures (vdWh), can host interlayer excitons (electron-hole pairs) that possess different optical properties to those of the constituent materials alone.

This PhD project will exploit the unique approach of vdWh fabrication in the context of single-photon emitters, which rely on the spatial localisation of single exciton quasiparticles. Instead of relying on random defects or adatoms, as has been the case for monolayer SPE devices, our approach will be to restrict the lateral dimensions of a vdWh itself. This PhD project combines the fabrication of novel two-dimensional materials and quantum optics measurement techniques for the realisation of bespoke solid-state single photon emitters.

Funding Notes

Funding is available for UK and EU candidates for 3.5 years at standard research council rates (stipend plus fees). See for further details.

The Physics department is proud to be an IOP Juno Champion and a winner of an Athena Swan Silver Award, reflecting our commitment to equal opportunity and to fostering an environment in which all can excel.

How good is research at University of Warwick in Physics?

FTE Category A staff submitted: 54.60

Research output data provided by the Research Excellence Framework (REF)

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