Die Gastvorträge im Rahmen des MPQ-Kolloquiums finden von April bis Juli sowie von Oktober bis Januar jeweils dienstags um 14:30 Uhr statt. Verantaltungsort ist der Herbert-Walther-Hörsaal im Foyer des Max-Planck-Instituts für Quantenoptik.

Ansprechpartner für die wissenschaftliche Organisation:

Dr. Stephan Dürr und Dr. Thomas Udem

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Recent advances in materials, control, and nanofabrication now open the prospect for scalable quantum technologies based on solid-state quantum systems. In particular, photonic integrated circuits (PICs) now allow routing photons with high precision and low loss, and solid-state artificial atoms provide high-quality spin-photon interfaces. [mehr]
---CANCELLED---Far-IR lasers have fallen largely in disuse due to their very limited tunability, poor power efficiency and bulk. We have realized compact, widely frequency-tunable, bright far IR lasers: a gas-phase molecular laser based on rotational population inversion optically pumped by a quantum cascade laser. [mehr]
Cold atom clouds scattering light appear are an ideal platform tocouple atoms, either classically or quantum-mechanically, thanks tothe long-range interactions mediated by the light: In 3D, thedipole-dipole interaction present a long-range 1/r decay, which givesrise to macroscopic modes and 'cooperative' effects. [mehr]
Traditional quantum interfaces between atomic ensembles and light have relied upon disordered three-dimensional atomic gases. Recently, however, there have been significant efforts toward exploring whether ordered arrays of atoms can give rise to qualitatively different quantum optical phenomena and functionality, specifically due to strong interference in light emission arising from spatial ordering. Here, we discuss ongoing work to explore this question in two-dimensional arrays. [mehr]

Parity Measurements in Action: Detecting Errors in the Surface Code and Heralding Itinerant Cat States using Superconducting Circuits (Prof.Christopher Eichler)

Parity Measurements in Action: Detecting Errors in the Surface Code and Heralding Itinerant Cat States using Superconducting Circuit
Parity measurements distinguish between quantum states with an even and an odd number of excitations without revealing any additional information about the state. Nondestructive parity detection allows one to project onto highly entangled states and therefore plays a central role in quantum error correction. [mehr]
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