Table 1 Single-qubit and two-qubit performance metrics. Not accounting for loss

From: A manufacturable platform for photonic quantum computing

 

Metric

Experiment value (%)

Single-qubit

SPAM fidelity

99.98 ± 0.01

99.996 ± 0.003*

Chip-to-chip fidelity

99.72 ± 0.04

Two-qubit

Quantum interference visibility

99.50 ± 0.25

Bell fidelity

99.22 ± 0.12

  1. *Second SPAM fidelity listed above is measured with bright light and off-chip detectors; see main text.
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