Extensible Photonics Achieves Universal Quantum Gate Sets
Extensible Photonics has demonstrated a photonic chip implementing a universal set of quantum gates, including single-qubit rotations and an entangling two-qubit gate. The gates were characterized using quantum process tomography, confirming their operation. This represents a step toward fully integrated photonic quantum processors.
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What this could mean
- 0–2 yearsPlausible
A small-scale photonic quantum processor running variational algorithms could be built within two years, leveraging this universal gate set integrated with on-chip photon sources.
If the demonstrated gate fidelities meet the error thresholds for meaningful variational operations and the platform can be scaled to a few tens of qubits by integrating sources and detectors on the same chip, near-term hybrid quantum-classical algorithms become feasible.
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