Details

Autor(en) / Beteiligte

• Seck, Christopher M
• Meier, Adam M
• Merrill, J True
• Hayden, Harley T
• Sawyer, Brian C
• Volin, Curtis E
• Brown, Kenton R

Titel

Single-ion addressing via trap potential modulation in global optical fields

Ist Teil von

• New journal of physics, 2020-05, Vol.22 (5), p.53024

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2020

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• To date, individual addressing of ion qubits has relied primarily on local Rabi or transition frequency differences between ions created via electromagnetic field spatial gradients or via ion transport operations. Alternatively, it is possible to synthesize arbitrary local one-qubit gates by leveraging local phase differences in a global driving field. Here we report individual addressing of 40Ca+ ions in a two-ion crystal using axial potential modulation in a global gate laser field. We characterize the resulting gate performance via one-qubit randomized benchmarking, applying different random sequences to each co-trapped ion. We identify the primary error sources and compare the results with single-ion experiments to better understand our experimental limitations. These experiments form a foundation for the universal control of two ions, confined in the same potential well, with a single gate laser beam.