Quantum Many Body Systems

Quantum Many Body Systems

Director: Prof. Dr. Immanuel Bloch

Illustration of the cyclotron orbits of atoms exposed to extremely strong effective magnetic fields in specially engineered light crystals.

Understanding interacting quantum many body systems and engineering and exploiting such quantum systems for quantum information purposes pose some of the most outstanding challenges in quantum physics. Our research focuses on realizing and controlling such systems using ultracold atomic quantum gases. Starting with ultracold gases of degenerate quantum matter of bosons or fermions held in optical and magnetic traps, we e.g. impose crystals of light on top of the atoms in order to trap them in controlled periodic potentials.

Artist's view of an entangled pair of quasiparticles emerging from the initial Mott insulating state and spreading across the system.

Such arrays can serve as versatile model systems for condensed matter physics, or as useful quantum information processors and effective setups for precision atomic and molecular physics measurements. Furthermore, our group investigates the possibility of forming interfaces between these many-body systems and light in order to generate novel nonclassical light sources and quantum memories for light.

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