Research Groups

BernienLab: Quantum Science Atom-by-Atom

Foto of Hannes Bernien
The BernienLab studies quantum science by assembling large quantum systems using individual atoms trapped in optical tweezers. This platform is ideally suited to both explore fundamental questions,... Read more …

Dipolar Quantum Gases

Foto of Francesca Ferlaino
The research team led by Francesca Ferlaino focuses on the study of dipolar quantum phenomena, using strongly magnetic atomic species. In 2012, the group has created the first Bose-Einstein... Read more …

Ultracold Atoms and Quantum Gases

Foto of Rudolf Grimm
The research group led by R. GRIMM investigates ultracold particle systems consisting of optically trapped quantum gases at temperatures close to absolute zero. Because of their superb experimental... Read more …

Superconducting quantum circuits

Foto of Gerhard Kirchmair
Gerhard Kirchmair’s research group works on superconducting circuits and their application for quantum computation and simulation. Superconducting Josephson junctions are used to realize the quantum... Read more …

Many-Body Quantum Optics

Foto of Hannes Pichler
The research group led by Hannes Pichler studies quantum optical systems, quantum many-body physics and quantum information. The group aims at laying the theoretical foundations for next generation... Read more …

Emeritus Research Groups

Quantum Optics and Spectroscopy

Foto of Rainer Blatt
The research group led by Rainer Blatt investigates quantum processes in a system of few ions held in ion traps. The experiments aim at achieving complete control over all quantum degrees of freedom in... Read more …

Quantum Optics

Foto of Peter Zoller
Wittgenstein awardee Peter Zoller studies topics in the fields of theoretical quantum optics and atomic physics as well as quantum information and condensed matter theory. His main focus is on... Read more …

Most Recent Preprints

Fabrication and characterization of vacuum-gap microstrip resonators C. Schlager, R. Albert, G. Kirchmair arXiv:2503.07431
Fast and Error-Correctable Quantum RAM F. Cesa, H. Bernien, H. Pichler arXiv:2503.19172v1
Quantum devices can process data in a fundamentally different way than classical computers. To leverage this potential, many algorithms require the aid of a quantum Random Access Memory (QRAM), i.e. a module capable of efficiently loading datasets (both classical and quantum) onto the quantum processor. However, a realization of this fundamental building block is still outstanding, since existing proposals require prohibitively many resources for reliable implementations, or are not compatible with current architectures. Moreover, present approaches cannot be scaled-up, as they do not allow for efficient quantum error-correction. Here we develop a QRAM design, that enables fast and robust QRAM calls, naturally allows for fault-tolerant and error-corrected operation, and can be integrated on present hardware. Our proposal employs a special quantum resource state that is consumed during the QRAM call: we discuss how it can be assembled and processed efficiently in a dedicated module, and give detailed blueprints for modern neutral-atom processors. Our work places a long missing, fundamental component of quantum computers within reach of currently available technology; this opens the door to algorithms featuring practical quantum advantage, including search or oracular problems, quantum chemistry and machine learning.
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