University Kaiserslautern Fast Tracks Quantum Computer Development with New DDS Firmware Option

There are many ways to build a quantum computer (QC) and RPTU Kaiserslautern’s approach within the Rymax One collaboration is to create an array of single atoms that act as qubits. The challenge is moving and holding each atom in its precise location. This is done by using a laser on each atom that traps it into the center of the laser beam effectively acting as an optical tweezer. However, point-by-point programming of each movement of the beam currently requires a lot of programming and a huge amount of data. This has now been cut dramatically with the use of the new Direct Digital Synthesis (DDS) firmware option from Spectrum Instrumentation so that the position of the lasers can be controlled with a few simple commands that define the start and stop parameters instead of making time consuming, large data array calculations.

Dipl.-Phys. Jonas Witzenrath said, “This is making a huge difference to the progress of our research. Using the new DDS option, we have been able to make rapid progress and reduce the complexity in the system allowing us to focus on advancing the research. The next step is to do the reordering of atoms in a static two-dimensional array using the dynamic capabilities of the DDS firmware.” Furthermore, in the next phase, they will use the AWGs to shape ideal UV laser pulses for precisely controlling interactions between qubits.

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