Rydberg mediated entanglement in a two-dimensional neutral atom qubit array
· Invited
Abstract
We demonstrate high fidelity two-qubit Rydberg blockade and entanglement in a 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 FBell = 0.86(2). Accounting for errors in state preparation and measurement (SPAM) and single qubit operations
we infer that a Bell state created with the Rydberg mediated CZ gate has a fidelity of 0.89. 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.
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 FBell = 0.86(2). Accounting for errors in state preparation and measurement (SPAM) and single qubit operations
we infer that a Bell state created with the Rydberg mediated CZ gate has a fidelity of 0.89. 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.
*We acknowledge support from NSF PHY-1720220, the
ARL-CDQI, DOE award DE-SC0019465, and ColdQuanta,
Inc. .
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Presenters
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Mark Saffman
- University of Wisconsin - Madison
- Physics, University of Wisconsin - Madison