Niels Bohr Institute > Research > Quantum Physics
Quantum Physics
Quantum physics or quantum mechanics is a branch of physics that concerns the properties of substances at nuclear level.
In 1913, the Danish physicist Niels Bohr developed his pioneering theory about the spectral lines of the hydrogen atom by assuming that energy came in quanta. This means that a quantum is the smallest conceivable quantity of energy in light waves.
Quantum mechanics developed into what is known as "the Copenhagen interpretation". This great breakthrough in the understanding of the structure of atoms made it possible to acquire deeper insight into the properties of substances, and it opened up new perspectives in wide fields of natural science.
The exploration of light and the quantum properties of atoms is one of the most active fields of research in modern physics. This is cuttingedge frontier research in which a brandnew world is being explored. In recent years, there has been extensive development of the experimental techniques that are used to manipulate quantummechanical states, and the groups have conducted several largescale research projects.

Center for Quantum Devices
QDev builds and studies electronic circuits that exhibit effects of quantum coherence and low dimension. Quantum Devices >>

Quantum Optics
The QUANTOP group studies quantum mechanical interactions between atoms and light and conducts experiments with teleportation. Quantum Optics >>

Quantum Photonics
Quantum Photonics builds bridges between two areas of research: Quantum optics and nanophysics. Quantum Photonics >>

Ultracold atoms
Precision measurements with ultracold atoms uses quantum physics to make precise measurements. Ultracold atoms >>

Theoretical Quantum Optics
The theoretical quantum optics group investigates how to control and exploit individual quantum systems, such as single atoms and photons. Theoretics >>