AG Schmidt-Kaler - Quantenbit
Lab tour 1, Posters, exhibition: „Scalable Quantum Computer with Ions”
We discuss the basics of quantum computing, show the new clean room for trap fabrication, describe the operation of segmented traps for qubit register reconfiguration, the full electronic and optical control architecture, quantum compilation of algorithms, and show the fault tolerant plaquette readout in view of quantum error correction. The quantum computer platform is operated from the control room.
Offered at 10.00 and 11.00, max 12 persons each session, meet in front of elevator 2nd floor. Contact for registration: graham@uni-mainz.de
Lab tour 2, Posters: “Ion crystals and cooperative light scattering, vortex light fields and mixed ion crystals including Th+ ions”
We show experiments of the SFB306, where we are observing collectice photon scattering by ion crystals, that projectively produces Dicke entangled states. Second, we show the interaction of a single ion with vortex-formed light field, and third sympathetic cooling of Th+ ions aiming for quantum logic spectroscopy in collaboration with HIM and nucl. Chem. Offered at 10.00 and 11.00, max 12 persons each session, meet in front of elevator 2nd floor. Contact for registration: graham@uni-mainz.de
AG van Loock- Optical Quantum Information Theory
Poster discussion: "How to correct errors in quantum technology: quantum communication"
One of the most important elements in the field of quantum information is the concept of quantum error correction. Before its invention in 1995, it appeared ill-defined, since the classical approach of creating redundancy for a robust encoding of information cannot be directly applied due to the quantum mechanical no-cloning theorem. The solution of 1995 was to make use of the notion of entanglement. Here we discuss the most recent development of quantum error correction codes for protecting quantum states of light against loss and noise in a quantum communication channel which could ultimately lead to applications such as a quantum internet. In particular, the quantized oscillator states of light modes can be directly employed for encoding and, in principle, there is no need to rely on complicated entangled states with many physical qubits (for an example of a "quantum company" following this "continuous-variable" photonics approach, see https://www.xanadu.ai/).
Offered at 10.00 and 11.00, meet in front of 05-530
Poster discussion: "How to correct errors in quantum technology: quantum computation"
One of the most important elements in the field of quantum information is the concept of quantum error correction . Before its invention in 1995, it appeared ill-defined, since the classical approach of creating redundancy for a robust encoding of information cannot be directly applied due to the quantum mechanical no-cloning theorem. The solution of 1995 was to make use of the notion of entanglement. Since entanglement is so fundamental and since it may serve as a universal resource in quantum computation, recent approaches to fault-tolerant quantum computing aim to combine the quantum computational and quantum error correction features of entangled states. Here we discuss such schemes for photonic quantum computers based on entangled states of many optical qubits (for an example of a "quantum company" following this "discrete-variable" photonics approach, see https://psiquantum.com/).
Offered at 10.30 and 11.30, meet in front of 05-530
AG Wendt- LARISSA
Lab tour: „Laser Spectroscopy on Exotic Isotopes - Challenging Atomic and Isotope Physics"
We focus on laser-based ionization and spectroscopy of exotic elements to investigate their complex atomic and nuclear structures. As a reaction on the incident at Chernobyl reactor, the core of the lab - RISIKO mass separator - was build and is still in use to study the ultra-trace quantities of radionuclides, rare-earth elements for different applications, e.g. nuclear medicine or neutrino-mass determination, and heavy actinides towards research on super heavy elements.
Offered at 10.00 and 11.00, no limited access, meet in the basement in front of the elevators
AG Windpassinger
Experimental Quantum Optics and Quantum Information
Poster discussion: „ Quantum physics with cold neutral atoms”
On this poster we will present our latest research on cold quantum gases and technologies to generate them. This includes our efforts to cool and manipulate Dysprosium atoms, the element with the largest ground-state magnetic moment. As such it features strong long ranged dipole-dipole interactions, making it very suitable for the study of cooperative and collective effects, like e.g. superradiance.
In the QUANTUS/BECCAL/ZEROVAK projects we are aiming at the development of novel technologies for the realization of quantum sensors that can be used outside the lab, like in space or field applications. Specifically we are developing compact, robust Laser systems and vacuum systems on the basis of the glass ceramic Zerodur, which excels at having a very low coefficient of thermal expansion.
We are also presenting our teaching MOT-setup in which students can get hand-on experience on a working cold quantum gas setup and even generate their own cold atoms.
Offered at 10.00 and 11.00, meet in front of room 02-119