Rydberg-mediated entanglement in a two-dimensional neutral atom qubit array
Physical review letters, 2019•APS
We demonstrate high fidelity two-qubit Rydberg blockade and entanglement on a pair of
sites in a large two-dimensional qubit array. The qubit array is defined by a grid of blue
detuned lines of light with 121 sites for trapping atomic qubits. Improved experimental
methods have increased the observed Bell state fidelity to F Bell= 0.86 (2). Accounting for
errors in state preparation and measurement we infer a fidelity of F Bell-SPAM= 0.88.
Accounting for errors in single qubit operations we infer that a Bell state created with the …
sites in a large two-dimensional qubit array. The qubit array is defined by a grid of blue
detuned lines of light with 121 sites for trapping atomic qubits. Improved experimental
methods have increased the observed Bell state fidelity to F Bell= 0.86 (2). Accounting for
errors in state preparation and measurement we infer a fidelity of F Bell-SPAM= 0.88.
Accounting for errors in single qubit operations we infer that a Bell state created with the …
We demonstrate high fidelity two-qubit Rydberg blockade and entanglement on a pair of sites in a large two-dimensional qubit array. The qubit array is defined by a grid of blue detuned lines of light with 121 sites for trapping atomic qubits. Improved experimental methods have increased the observed Bell state fidelity to . Accounting for errors in state preparation and measurement we infer a fidelity of . Accounting for errors in single qubit operations we infer that a Bell state created with the Rydberg mediated gate has a fidelity of . Comparison with a detailed error model based on quantum process matrices indicates that finite atom temperature and laser noise are the dominant error sources contributing to the observed gate infidelity.
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