Seminar | Benjamin Schiffer

Abstract: We propose a quantum computer architecture based on ions confined in optical tweezer arrays, combining the long coherence times of trapped-ion qubits with the reconfigurability and parallel operation enabled by tweezer platforms. Ions are transported to interaction zones, where excitation to an auxiliary state with a displaced optical potential generates a controllable effective electric dipole. We develop and analyze entangling-gate mechanisms mediated by the Coulomb interaction and outline a concrete implementation with barium ions based on state-selective polarizability. We also study the suppression of cross-talk during parallel gate execution, with relevance to transversal gates in quantum error correction. 
The talk will be based on the recent preprint: https://arxiv.org/abs/2606.27249

Registration: https://events.teams.microsoft.com/event/004c752a-ac31-4216-a095-b5ff023196a8@8f0d452c-b7a4-4964-b810-8c397374477b