Bonn 2025 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
A: Fachverband Atomphysik
A 9: Poster – Ultra-cold Atoms, Ions and BEC (joint session A/Q)
A 9.17: Poster
Tuesday, March 11, 2025, 14:00–16:00, Tent
A UV laser setup for neutral atom based quantum computation. — •Tobias Pätkau1, Jonas Gutsche1, Jens Nettersheim1, Suthep Pomjaksilp1, Jonas Witzenrath1, Niclas Luick2, Dieter Jaksch2, Henning Moritz2, Thomas Niederprüm1, Herwig Ott1, Peter Schmelcher2, Klaus Sengstock2, and Artur Widera1 — 1RPTU Kaiserslautern-Landau, 67663 Kaiserslautern, Germany — 2University of Hamburg, 22761 Hamburg, Germany
The emergence of commercially viable quantum processing holds the potential to significantly enhance our ability to address complex optimization problems. As a promising platform, neutral atom based quantum computing offers efficient solutions for problems ranging from supply chain optimization to logistical transportation.
Within the Rymax One project, a neutral atom quantum computer is built up that consists of neutral Ytterbium atoms trapped in arrays of optical tweezers, where interactions between the qubits are mediated via Rydberg blockade mechanisms. To excite Rydberg states, we demonstrate a laser setup to generate frequency and amplitude controlled pulses of UV light with an AOM in a prism-based double pass configuration. Combining two UV lasers at 301 nm and 308 nm using a reflective grating, we couple both lasers simultaneously in a UV optical fiber. This allows us to simultaneously address Ytterbium Rydberg states from two different intermediate states. To estimate the effect on the qubit fidelity, we measure the phase noise of the laser in reference to a frequency comb and feed that data into a master equation simulation of the maximum independent set Hamiltonian.
Keywords: Neutral atom quantum computing; rydberg excitation; laser phase noise; acousto-optical modulators