Hannover 2020 – scientific programme

The DPG Spring Meeting in Hannover had to be cancelled! Read more ...

Parts | Days | Selection | Search | Updates | Downloads | Help

Q: Fachverband Quantenoptik und Photonik

Q 13: Posters: Quantum Optics and Photonics I

Q 13.68: Poster

Monday, March 9, 2020, 16:30–18:30, Empore Lichthof

Ion Trap Development for Scalable Quantum Computing — Alexander Müller, •Björn Lekitsch, Daniel Pijn, Janine Hilder, Alexander Stahl, Ferdinand Schmidt-Kaler, and Ulrich Poschinger — JGU Mainz, Institute for Physics, Staudingerweg 7, 55128 Mainz, Germany

We present the development of a new symmetric linear Paul trap for trapped-ion quantum computing. Scaling such a system to a few tens of qubits requires a precisely aligned and reliably fabricated ion trap, and also high optical access for laser and detection optics.

We show our work towards such a trap design making use of laser assisted etching of Quartz wafers in combination with physical vapor deposition and electroplating to create individual ion trap chips. We will discuss how two trap chips in combination with structured spacers can be aligned and permanently eutetically bonded together with µm precision using a die bonder. The trap will feature 40 usable electrode segments with an ion electrode distance of 350 µm.

To achieve addressing of single ions we will use both, ion shuttling [1] and individual optical addressing. For this we will equip two distinct trapping segments with full sets of cooling, gate, and detection lasers. One of these segments will feature a high-NA in-vacuum lens for efficient photon counting, and one will feature a high resolution objective for the individual addressing of large ion chains.
[1] D. Kielpinski et al., Nature 417, 709 (2002)