For the first time, superconducting quantum processors have been connected using multiple meter-scale quantum channels with an average quantum state transfer fidelity of 99%.
Realizing the full potential of quantum computing requires us to scale to much larger quantum systems than exist today, a path that won't rely solely on building larger chips.
Modular quantum computers therefore consist of individual quantum processors joined by meter-scale interconnects inside of modular cryogenics—dilution fridges that scale but share a cryogenic environment.
A variety of previous papers from quantum hardware outfits in the industry have demonstrated a variety of connections between different quantum processors.
But now, we’re demonstrating reliable high-quality l-coupler connections capable of transmitting quantum information between quantum processors with low error rates.