Scalable simultaneous multiqubit readout with 99.99% single-shot fidelity

Journal article

We describe single-shot readout of a trapped-ion multiqubit register using space- and time-resolved camera detection. For a single qubit we measure 0.9(3)×10-4 readout error in 400μs exposure time, limited by the qubit's decay lifetime. For a four-qubit register (a "qunybble"), we measure an additional error of only 0.1(1)×10-4 per qubit, despite the presence of 4% optical cross-talk between neighboring qubits. A study of the cross-talk indicates that the method would scale with a negligible ...

Expand abstract

Authors: Burrell, A; Szwer, D; Webster, S; Lucas, D

• Publication status: Published
• Journal: PHYSICAL REVIEW A
• Volume: 81
• Issue: 4
• Publication date: 2010-04-01
• DOI: 10.1103/PhysRevA.81.040302
• EISSN: 1094-1622
• ISSN: 1050-2947
• Language: English