QUANTOP – University of Copenhagen

The Danish Center for Quantum Optics (QUANTOP) started as a DNRF "Center of Excellence" in 2001. QUANTOP’s research is focused on exploring quantum effects at the interface between light and matter.

MSc
PhD
Quantop research
Quantum Photonics
We investigate the quantum interaction between light and nanophotonic semiconductor materials. Our quest is to develop methods to coherently control the coupling between photons and matter utilizing tailored nanophotonic structures such as photonic crystals.
Quantum theory
The theoretical quantum optics group investigates how to control and exploit individual quantum systems, such as single atoms and photons.
Schliesser lab
Our research presently focuses on hybrid systems involving nano- and micromechanical oscillators in, or at the verge to, the quantum regime.
Ultracold atoms
The group works with experimental setups in the laboratory, where the atoms are trapped in a magnetic field, where they are held by precise beams of laser light and are cooled down to near absolute zero, minus 273 degrees Celsius. The result is an atomic clock that is now so precise that it only loses one second every 300 million years.

About the Quantum Optics and Ultracold Atoms section: The permanent faculty members within the section are Professor Peter Lodahl , Associate professor Joerg H. Müller, Professor Eugene S. Polzik (head of the section), Professor Albert Schliesser, Professor Anders S. Sørensen, and Professor Jan W. Thomsen. Read more about the section >>

Research at Quantop
At QUANTOP - the Quantum Optics Center – we study quantum effects at light-matter interface. Particles of light, photons, are great for creating, reading out and transmitting quantum information between material objects.
Quantop publications
List of publications by the Quantop Optics staff.
Teaching & Courses
List of courses by QUANTOP.
Staff and students
See the list of the Quantop Optics staff at the Niels Bohr Institute, University of Copenhagen.
Smart atomic cloud solves Heisenberg's observation problem
Quantum physics: 13 July 2017

Smart atomic cloud solves Heisenberg's observation problem

Scientists at the Niels Bohr Institute, University of Copenhagen have been instrumental in developing a 'hands-on' answer to a challenge intricately linked to a very fundamental principle in physics: Heisenberg's Uncertainty Principle. The NBI-researchers used laser light to link caesium atoms and a vibrating membrane. The research, the first of its kind, points to sensors capable of measuring movement with unseen precision.

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