Bio-related projects and
applications
Development
of instruments for deep tissue imaging with molecular specificity
The project
investigates how quantum structures that reduce the speed of light to a few
tens of km/s can be used for enabling optical imaging deep inside the human
body.
Principal
investigators: Johannes Swartling, SpectraCure AB and Stefan Kröll, Lund
University
Industrial
PhD student: David Hill, SpectraCure/Lund University
Cavity
QED to image otherwise dark single molecules
The project
aims at building a microscope able to detect dark transitions in molecules by
micro-cavity Purcell enhancement.
Principal
investigators: Ivan Scheblykin and Andreas Walther, Lund University
PhD
student: Safi Rafie-Zinedine, Lund University
Biomolecular
sensing via single molecule fluorescence fluctuation parameters
Fluctuations
in the light emitted by a fluorescent marker molecule depends strongly on local
conditions, such as oxygenation, viscosity, and molecular interactions. This
project aims to analyse the light fluctuations and use it for biomolecular
sensing applications.
Principal
investigators: Jerker Widengren and Katia Gallo, KTH
PhD
student: Abhilash
Kulkarni, KTH
SiC for
nanoscale magnetometry
Colour
centres in silicon carbide (SiC) have the potential to measure e.g. magnetic
fields with ultra-high sensitivity. The goal of this project is to develop a SiC-based
quantum magnetic microscope for living cells.
Principal investigators:
Mohamed Bourennane, Stockholm University, and Jawad Ul-Hassan, Linköping
University
Postdoc: Nassim
Mohammedi, Stockholm University
Microwave detection and
manipulation
Quantum
sensing with trapped Rydberg ions
The project
studies trapped Rydberg ions for very sensitive electric and microwave field
detection. Entangled Rydberg ion states have the potential to further enhance
the measurement sensitivity.
Principal
investigator: Markus Hennrich, Stockholm University
PhD student:
Harry Parke, Stockholm University
Quantum radar
The project
explores the possibility for quantum-enhanced radar technology, for example by
the use of squeezed microwave photons.
Principal
investigators: Per Delsing and Göran Johansson, Chalmers, Anders Ström, Saab
Industrial PhD
students: Robert Jonsson and Martin Ankel, Saab/Chalmers
Microwave
generation and detection with quantum dots – toward single-shot microwave
photodetectors and non-classical light sources
The project
aims at developing material-defined quantum dot structures and use them for
generation and detection of single microwave photons.
Principal investigator: Ville Maisi, Lund University
Postdoc: Subhomoy Haldar, Lund University
Quantum sensor
of single photons from GHz to THz range
This
project will use graphene, doped to the Dirac point, as an extremely sensitive
and fast quantum detector of electromagnetic radiation in a wide frequency
range at a single-photon level.
Principal investigator:
Sergey Kubatkin, Chalmers
Postdoc:
Federico Chianese, Chalmers
Ultra-coherent
mechanical resonators for quantum-enhanced sensing
This
project will capitalize on the exquisite isolation of a magnetically levitated,
micrometer-sized superconducting particle and its coupling to superconducting
circuits. This unique experimental platform should be capable of enabling
quantum control over the center-of-mass motion of the levitated particle. The
particle displacement is sensitive to small forces or accelerations, which
makes this platform suitable as a novel quantum-enhanced sensor.
Principal
investigator: Witlef Wieczorek, Chalmers
PhD
student: Achintya Paradkar, Chalmers
Optical methods and
techniques
Quantum-limited
displacement sensing with integrated free-space cavity optomechanical devices
The goal of
this project is to develop a novel free-space, on-chip cavity optomechanical
system based on photonic crystal slabs in the crystalline InGaP/AlGaAs material
system. The objectives of the project are to simulate, fabricate and
characterize suitable devices, and to benchmark their force and displacement
sensitivity.
Principal
investigator: Witlef Wieczorek, Chalmers
Postdoc: Anastasiia
Ciers, Chalmers (starts Nov 2022)
Ultrafast
quantum metrology – extending quantum control towards the femto- and attosecond
time scales
The aim of
this project is to study the quantum coherence of electron wavepackets created
by absorption of attosecond lightpulses.
Principal
investigator: Anne L’Huillier, Lund University
PhD
student: Mattias Ammitzböll, Lund University
Resolution-unlimited
measurement of the spatial/spectral separation of two emitters by detection and
analysis of the spatial mode structure/quantum control
If based on
the principles of quantum mechanics, it could be possible to construct a
measurement capable of “seeing” beyond the resolution limit. This project aims at
testing this under realistic conditions, accessing parameters that would allow
for applications of quantum sensing.
Principal
investigator: Ana Predojević, Stockholm University
PhD student:
Jaewon Lee, Stockholm University
Frequency-structured
materials for enhanced optical frequency references
The aim of
this project is to explore frequency-structured materials in which light
travels extremely slowly for precision optical frequency references and, in the
longer run, improved frequency standards.
Principal
investigators: Martin Zelan, Rise and Lars Rippe, Lund University
Industrial
PhD student: Marcus Lindén, Rise/Lund University
Quantum
light spectroscopy
Quantum
light spectroscopy in envisioned to be able to achieve high temporal and
spectral resolution in a single measurement. This project aims at performing
spectroscopy with entangled photons using a modulation technique from our
coherent multidimensional spectroscopy implementation.
Principal
investigator: Tönu Pullerits, Lund University
Postdoc: Sankaran Ramesh, Lund University
Theory
Quantum
sensing with non-classical microwaves generated in hybrid nanowire-cavity
systems
The project
will theoretically analyse the non-classical properties of microwave states
generated by electrical transport through a nanowire double-quantum-dot system
embedded in a microwave resonator. Having established optimal system properties
for non-classical microwave generation, proof-of-concept experiments for
quantum sensing will be proposed and analysed theoretically.
Principal
investigator: Peter Samuelsson, Lund University
PhD
student: Drilon Zenelaj, Lund University
Sensing
based on electric currents with sensitivity enhanced by entanglement and
coherence
The project
theoretically investigates sensing based on the electric current through
quantum dot-based systems. The aim is to find ways to use quantum coherence and
entanglement to reach sensitivities not limited by temperature or other
external energy scales. Learn more in this short film
by Stephanie Matern.
Principal
investigator: Martin Leijnse, Lund University
Postdoc:
Stephanie Matern, Lund University
Materials
solution for nanoscale quantum sensing
Point-defect
qubits in wide-band-gap materials, such as NV centres in diamond, have opened
new horizons for nanoscale sensing. This project aims at developing the
theoretical and software tools to identify and screen for new point-defect
qubit candidates in various wide-band-gap host materials.
Principal
investigator: Igor Abrikosov, Linköping University
PhD
student: William Stenlund, Linköping University
Non-Hermitian
topological sensors
Non-Hermitian topology is a new
cross-disciplinary frontier enriching the phenomenology of topological phases
traditionally studied in condensed matter physics with qualitatively new
effects of dissipation ubiquitous in atomic and photonic systems. This project
will investigate the ramifications of this field on quantum technology.
Principal
investigator: Emil Bergholtz, Stockholm University
PhD
student: Oscar Arandes Tejerina, Stockholm University
Finished projects
Circuit
quantum electrodynamics with epitaxially defined quantum dots (Ville
Maisi)