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Connecting Qubits via a Cryogenic Link December 21, 2020• Physics 13, s162 A cold waveguide provides a reliable conduit for transferring states between remote qubits, making it potentially useful for building networks connecting superconducting circuits. P. Magnard P. Magnard × Powerful quantum computers could be built by linking together multiple superconducting quantum processors. Promising schemes involve exchanging visible or infrared photons through optical fibers and converting such photons into microwave photons that can couple to the superconducting qubits. But the microwave-to-optical transduction can spoil the fidelity of the quantum states. Now, Paul Magnard of the Swiss Federal Institute of Technology (ETH) in Zurich and colleagues have built and tested a link that bypasses the need for frequency conversion [1]. This link directly transfers qubit states encoded in microwave photons from one circuit to another located meters away.

United statesAlan stonebrakerChristopher crockettPaul magnardSwiss federal institute of technologySwiss federal instituteஒன்றுபட்டது மாநிலங்களில்ஆலன் ஸ்தோந்ெபிரகேற்கிறிஸ்டோபர் குரோக்கெட்சுவிஸ் கூட்டாட்சியின் நிறுவனம் ஆஃப் தொழில்நுட்பம்சுவிஸ் கூட்டாட்சியின் நிறுவனம்