Seminare


Seminare

In unregelmäßigen Abständen finden am MPQ Seminare statt. Diese werden von den Wissenschaftlern der einzelnen Abteilungen organisiert.

Der Veranstaltungsort wird mit dem jeweiligen Seminar bekannt gegeben.

Gastgeber: MPQ, Theory Division

Subradiant States of a 1D Qubit Chain

Subradiant States of a 1D Qubit Chain
Subradiant States of a 1D Qubit Chain [mehr]

Spatial entanglement patterns and Einstein-Podolsky-Rosen steering in a Bose-Einstein condensate (Dr. Matteo Fadel)

Spatial entanglement patterns and Einstein-Podolsky-Rosen steering in a Bose-Einstein condensate
Atomic Bose-Einstein condensates (BECs) are highly controllable isolated quantum systems with long coherence times, and offer applications in metrology and quantum information processing. We experimentally prepare two-component Rubidium-87 BECs, consisting of a few hundred atoms, on an atom-chip. Using state-selective potentials to tune the collisional interactions (one-axis twisting dynamics), we prepare many-particle non-classical states. After a time-of-flight expansion, high-resolution images allows us to access sub-regions of the atomic density distribution of various shapes and measure the spin correlations between them. [mehr]

Kick-off WORKSHOP: Quantum Emitters in Non-Conventional Baths (European Research Council)

Quantum Emitters in Non-Conventional Baths (European Research Council)

SDP relaxations for the certification of properties of many-body quantum states (Flavio Baccari)

SDP relaxations for the certification of properties of many-body quantum states
Understanding the properties of many-body systems is one of the crucial questions for the development of quantum technologies. An ubiquitous problem is to certify that a given many-body quantum system satisfies an operational property: is this given system in an entangled state? Does it contain the solution to a classical optimisation problem? [mehr]

Entanglement in non-unitary critical spin chains (Romain Couvreur)

Entanglement in non-unitary critical spin chains
Entanglement entropy has proven invaluable to our understanding of quantum criticality. It is natural to try to extend the concept to “nonunitary quantum mechanics”, which has seen growing interest from areas as diverse as open quantum systems, noninteracting electronic disordered systems, or nonunitary conformal field theory (CFT). [mehr]
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