Universal Control of Ion Qubits in a Scalable Microfabricated Planar Trap
arXiv:1509.05378 · doi:10.1088/1367-2630/18/2/023048
Abstract
We demonstrate universal quantum control over chains of ions in a surface-electrode ion trap, including all the fundamental operations necessary to perform algorithms in a one-dimensional, nearest-neighbor quantum computing architecture. We realize both single-qubit operations and nearest-neighbor entangling gates with Raman laser beams, and we interleave the two gate types. We report average single-qubit gate fidelities as high as 0.970(1) for two-, three-, and four-ion chains, characterized with randomized benchmarking. We generate Bell states between the nearest-neighbor pairs of a three-ion chain, with fidelity up to 0.84(2). We combine one- and two-qubit gates to perform quantum process tomography of a CNOT gate in a two-ion chain, and we report an overall fidelity of 0.76(3).
17 pages, 7 figures. Corrected pulse sequence label to PB1
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- Measuring anomalous heating in a planar ion trap with variable ion-surface separation
- Fast ion swapping for quantum information processing
- Generation of arbitrary all-photonic graph states from quantum emitters
- Transport Implementation of the Bernstein-Vazirani Algorithm with Ion Qubits
- Ion trap architectures and new directions
- Scalable quantum computing stabilised by optical tweezers on an ion crystal
- Single-ion addressing via trap potential modulation in global optical fields
- Quantum process tomography of a Mølmer-Sørensen gate via a global beam
- Generating Target Graph Couplings for QAOA from Native Quantum Hardware Couplings
- Modelling noise in global Molmer-Sorensen interactions applied to quantum approximate optimization
- Temporally multiplexed ion-photon quantum interface via fast ion-chain transport
- The Virtual Quantum Device (VQD): A tool for detailed emulation of quantum computers