ESR No

1

University of Sheffield

Prof Alexander Tartakovskii

a.tartakovskii@sheffield.ac.uk

Project 1

The goal of the project is to study valley and spin properties as well as non-linear phenomena of exciton-polaritons in 2D heterostructures embedded in microcavities. The heterostructures will be made from molybdenum diselenide and tungsten  diselenide, hexagonal boron nitride and graphene.

2

University of Sheffield

Prof Alexander Tartakovskii

a.tartakovskii@sheffield.ac.uk

 Project 2

The goal of the project is understanding and control of spin properties of single-photon emitting defect centres in 2D films. The result of this project will be creation of stable defect centres in WSe2 with controlled charge states, where exciton/electron spin states can be optically initialized and read-out, and new understanding gained about the exciton/electron spin dynamics and coherence.

3

University of Cambridge

Prof Mete Atatüre

ma424@cam.ac.uk

4

Helia Photonics

Dr Caspar Clark

caspar.clark@helia-photonics.com

5

Technical University of Munich

Dr Friedemann Reinhard

friedemann.reinhard@tum.de

Quantum Sensing with color centers in diamond

NV centers in diamond serve as atomically small sensors for magnetic fields, sufficiently sensitive to detect the magnetic field of single molecules. They promise to become the crucial building block of a future nuclear magnetic resonance microscope that could image single biomolecules with atomic resolution. In a PhD project, you will investigate novel optical and electronic schemes for spin readout of NV centers and apply these tools to sensing and imaging of nanoscale magnetic fields. Results could include NMR imaging of single biomolecules or cell slices.

6

University of Konstanz

Prof Guido Burkard

guido.burkard@uni-konstanz.de

Quantum spin physics of defects in diamond and of two-dimensional materials

This project in theoretical condensed matter physics will focus on the dynamics, coherence, and optical control of single electron spins in dilute nuclear spin nanosystems. Dilute nuclear spin materials such as carbon, silicon, and others, are interesting for spin-based quantum information processing because a long quantum coherence of the electron spin can be expected in such materials. The systems under investigation in this project will be the Silicon-Vacancy defect in diamond on the one hand, and two-dimensional materials such as graphene and transition-metal dichalcogenides on the other. The prospective researcher will model the inter-conversion between spin and photon quantum states and optical control spin control schemes.

7

attocube systems AG

Prof Khaled Karraï

Khaled.Karrai@attocube.com

8

National Centre for Scientific Research

Prof Bernhard Urbaszek

urbaszek@insa-toulouse.fr

9

ETH Zürich

Prof Klaus Ensslin

ensslin@phys.ethz.ch

Transport through van der Waals quantum structures

Graphene quantum dots have the potential to be an ideal host for spin-qubits because of the predicted long spin coherence times. So far high-quality quantum dots have been realized by laterally etching graphene into islands connected with leads similar as it has been done for semiconductors. Our groups has pioneered single and double quantum dots as well as time-resolved charge detection. At this point transport mostly occurs through localized states at the edges of the patterned graphene. In order to prepare well-defined and well-understood singly and doubly occupied graphene quantum dots it is required to replace the etched edge by an electrostatically defined etch. This may include bilayer graphene samples where a lateral bandgap can be opened by suitable back and top gate electrodes. Further 2D materials such as WSe2 will be investigated in order to check and improve their electronic properties and fine-tune them for the operation as quantum devices.

10

ETH Zürich

Prof Atac Imamoglu

imamoglu@phys.ethz.ch

Valley-spin coherence in 2D materials

In this project to be carried out at ETH Zurich, the PhD candidate will investigate valley-spin physics in heterostructures made out of 2D materials such as monolayers of molybdenum diselenide and tungsten diselenide. A first enabling step is the demonstration of valley-pumping by using a combination of resonant circularly polarized laser excitation and applied dc-fields.  The principal goal of the project is the measurement of electron (hole) spin coherence times as a function of resident electron (hole) density. The candidate will investigate both 2D trion and 0D charged-quantum-dot  systems.

11

University of Basel 

Prof Richard J Warburton

richard.warburton@unibas.ch

12

University of Basel

Prof Daniel Loss

daniel.loss@unibas.ch

13

Delft University of Technology

Prof Ronald Hanson

r.hanson@tudelft.nl

14

Delft University of Technology

Prof Lieven Vandersypen

l.m.k.vandersypen@tudelft.nl

Electron spin quantum bits in Si/SiGe

In the past few years, the coherence time of an individual electron spin in a quantum dot has gone up by four orders of magnitude. This was made possible by moving from III-V materials to silicon, and then to isotopically purified 28Si. In this project, we wish to take advantage of this breakthrough in multi-qubit circuits where spins are controlled and coupled all-electrically and with high precision. We have an opening for a PhD student in this area, to push forward both the nano fabrication and measurement of Si/SiGe quantum dot circuits.

15

University of Copenhagen

Prof Ferdinand Kuemmeth

Prof Charles Marcus

kuemmeth@nbi.ku.dk

marcus@nbi.dk

Spin qubits with all-electrical control in germanium-silicon heterostructures - Center for Quantum Devices, Station Q Copenhagen

The last year has seen tremendous advances in fabricating spin qubit devices from silicon-germanium based heterostructures. This project will realize high-performance qubit control and readout using high-frequency voltage pulses and fast data acquisition techniques. Spin qubits will be developed in Si/SiGe planar heterostructures or Ge/Si core/shell nanowires using state-of-the-art nanofabrication facilities at our center in Copenhagen.

Special emphasis will be placed on fabrication methods that are compatible with isotopically purified host materials, and on the development of multi-qubit quantum devices that can be controlled in a scalable geometry. The PhD student will work closely with the existing spin qubit team in Copenhagen, and receive further support through collaboration and exchange with theoretical and experimental labs within the Spin-NANO network.