Journal
PHYSICAL REVIEW LETTERS
Volume 116, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.116.080502
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Funding
- Swiss National Science Foundation [200021_134776, 200020_153430]
- ETH Research Grant [ETH-18 12-2]
- Swiss National Science Foundation through the National Centre of Competence in Research for Quantum Science and Technology (QSIT)
- Swiss National Science Foundation (SNF) [200020_153430, 200021_134776] Funding Source: Swiss National Science Foundation (SNF)
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We demonstrate single-qubit operations by transporting a beryllium ion with a controlled velocity through a stationary laser beam. We use these to perform coherent sequences of quantum operations, and to perform parallel quantum logic gates on two ions in different processing zones of a multiplexed ion trap chip using a single recycled laser beam. For the latter, we demonstrate individually addressed single-qubit gates by local control of the speed of each ion. The fidelities we observe are consistent with operations performed using standard methods involving static ions and pulsed laser fields. This work therefore provides a path to scalable ion trap quantum computing with reduced requirements on the optical control complexity.
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