This episode dives into the emerging challenge of connecting quantum processors as they scale beyond a few hundred qubits. Lucas and Luna explore why electrical interconnects break down at cryogenic temperatures and how optical links — using photons to carry quantum information — are becoming the leading solution. They discuss a specific 2025 demonstration from the startup Lightmatter showing a photonic interconnect operating at less than one percent of the error rate of electrical alternatives inside a dilution refrigerator. The hosts also unpack what this means for modular architectures, and why Intel, Google, and a handful of startups are now racing to commercialize optical links for quantum. If you've wondered how quantum computers will ever scale to thousands or millions of qubits, this episode explains one of the most critical hardware pieces being built right now.

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