Seminars


Seminars

On an irregular basis various Special Seminars take place at the MPQ. The seminars are organized by scientists of our divisions, administration or staff representatives.

The location will be announced with the event.
Incompatibility in quantum mechanics is famously captured through uncertainty relations. In this talk, we adopt the perspective that incompatibility can be fundamentally understood in terms of emulation of measurements by other measurements. [more]

Simulating ground states and elementary excitations with PEPS (Dr. Laurens Vanderstraeten)

Simulating ground states and elementary excitations with PEPS
In this talk we review variational PEPS algorithms for two-dimensional quantum spin systems. First we focus on the optimization of ground-state approximations for generic hamiltonians, and show some benchmark results. Next, we build excited-state wavefunctions on top of such a PEPS ground state using a generalization of the single-mode approximation. [more]

Ultrafast mid-infrared laser systems and broad-band precision molecular spectroscopy

Ultrafast mid-infrared laser systems and broad-band precision molecular spectroscopy
Femtosecond laser sources operating in the near- and middle-infrared (mid-IR) spectral range with high- repetition rates are of upmost interest for a variety of applications ranging from ultrafast spectroscopy, high-resolution and broadband spectroscopy, quantum optics, frequency metrology and synthesis of mid-IR optical frequency combs. [more]

Subradiant States of a 1D Qubit Chain

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

Certification of Quantum Measurements and New Entangled Quantum Probes

Certification of Quantum Measurements and New Entangled Quantum Probes
In the quantum information literature, self-testing refers to the action of uniquely determining a quantum state based solely on the statistics of measurement outcomes and minimal assumptions. These quantum self-testing protocols are more stringent than well-known Bell tests. While violation of a Bell inequality for a bipartite system establishes that its quantum state is entangled, it cannot certify, for instance, that its quantum state is maximally entangled. We extend self-testing techniques to certification of quantum measurements in various physical settings. [more]
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