Quantum Sensing 2017-05-05T12:43:25+00:00

Quantum Sensing

Qubiz researchers have pioneered fundamentally new approaches to sensing in proof-of-principle demonstrations of magnetic-field detection beyond quantum limits.

Quantum mechanics tells us that when light interacts with atoms they can become entangled, that is they exist in quantum superpositions. Such entanglement, which the founding fathers of quantum mechanics considered its most fundamental and most controversial feature, is used at QUANTOP for breaking established limits in communication and sensing of fields and forces. Teleportation of quantum states of objects, generation of single photons on demand, quantum memory for light, and measurements of fields and forces beyond the limit set by the Heisenberg uncertainty principle are among the experiments we perform.

Generation of quantum superposition states and entanglement requires extreme control of photons and material objects and careful protection from decoherence caused by the environment. Various experimental techniques, including lasers, structured fibers, vacuum- and cryogenic setups and sensitive electronics have been developed to achieve such control. Experiments with as diverse objects as room temperature atoms, cold atoms trapped around a nanofiber and high-Q mechanical membranes are carried out. Our goal is to develop future quantum technologies based on superposition and entangled states of light and matter.

The research for Quantum Sensing will include focus areas on:

  • Diamond based 2+1-dimensional magnetometry
    We will develop compact magnetic field sensors with unprecedented combination of field sensitivity and spatial resolution for bio-medical sensing.
  • Quantum Magnetometer for biomedical applicationsWe aim to develop a highly-sensitive, practical miniature magnetometer and show a lab demonstration of the magnetometer’s capability to detect biologically relevant signals.
  • RF-to-Optical Transducer
    This research combines recent advances MEMS devices with optical sensing in a novel way that is both simple to model and understand whilst being compatible with a general set of electronic circuits that are standard fare in many applications.

Project Leader

Eugene Polzik

Professor at the Niels Bohr Institute (NBI) and Head of the Quantum Optics.

Key Investigators

Jan W. Thomsen

Associate Professor at Quantop, Niels Bohr Institute (NBI)

Radu Malureanu

Senior Researcher, Danish Technical University (DTU)

All Research Team Members

Eugene S. Polzik
Eugene S. PolzikProject Leader and Key Investigator, NBI
Ulrik Lund Andersen
Ulrik Lund AndersenProfessor, DTU
Alexander Huck
Alexander HuckAssociate Professor, DTU
Albert Schliesser
Albert SchliesserProfessor, NBI
Yeghishe Tsaturyan
Yeghishe TsaturyanPhD student, NBI
Jan Westenkær Thomsen
Jan Westenkær ThomsenKey Investigator, NBI
Mikkel Fougt Hansen
Mikkel Fougt HansenAssociate Professor, DTU
Fedor Jelezko
Fedor JelezkoProfessor, External Collaborator
Anders Simonsen
Anders SimonsenPhD student, NBI
Radu Malureanu
Radu MalureanuKey Investigator, DTU
Lars G. Hanson
Lars G. HansonAssociate Professor, DTU
Kasper Jensen
Kasper JensenPostdoc, NBI
Axel Thielscher
Axel ThielscherAssociate Professor, DTU