Single-qubit gates based on targeted phase shifts in a 3D neutral atom array

Yang Wang, Aishwarya Kumar, Tsung Yao Wu, David S. Weiss

Research output: Contribution to journalArticlepeer-review

119 Scopus citations


Although the quality of individual quantum bits (qubits) and quantum gates has been steadily improving, the number of qubits in a single system has increased quite slowly. Here, we demonstrate arbitrary single-qubit gates based on targeted phase shifts, an approach that can be applied to atom, ion, or other atom-like systems. These gates are highly insensitive to addressing beam imperfections and have little cross-talk, allowing for a dramatic scaling up of qubit number.We have performed gates in series on 48 individually targeted sites in a 40% full 5 by 5 by 5 three-dimensional array created by an optical lattice. Using randomized benchmarking, we demonstrate an average gate fidelity of 0.9962(16), with an average cross-talk fidelity of 0.9979(2) (numbers in parentheses indicate the one standard deviation uncertainty in the final digits).

Original languageEnglish (US)
Pages (from-to)1562-1565
Number of pages4
Issue number6293
StatePublished - Jun 24 2016

All Science Journal Classification (ASJC) codes

  • General


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