Local Control in a Sr quantum computing demonstrator

Details
Speaker Name/Affiliation
Kevin Mours, Graduate student, Zeiher/Bloch group, MPQ
When
-
Seminar Type
Location (Room)
JILA Auditorium
Event Details & Abstracts

Digital quantum simulations and quantum error-correction protocols require the application of local gates. We demonstrate such local control in a Sr-88 tweezer array platform by locally shifting the qubit frequency using off-resonant light. This enables precise, highly parallel local Z rotations with low crosstalk. In combination with fast, recoil-free global X rotations, optimized via optimal-control techniques to minimize motional entanglement, this approach allows the local implementation of universal single-qubit gates at rates exceeding 20 kHz. Together with two-qubit operations based on strong Rydberg blockade, we can realize a universal quantum gate set. Equipped with qubit shuttling, our platform opens an exciting frontier for quantum computing, digital quantum simulation, and quantum metrology.