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arXiv · 1408.5972

Solid state optical interconnect between distant superconducting quantum chips

Keyu Xia·Jason Twamley
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Abstract

We propose a design for a quantum interface exploiting the electron spins in crystals to swap the quantum states between the optical and microwave. Using sideband driving of a superconducting flux qubit and a combined cavity/solid-state spin ensemble Raman transition, we demonstrate how a stimulated Raman adiabatic passage (STIRAP)-type operation can swap the quantum state between a superconducting flux qubit and an optical cavity mode with a fidelity higher than $90\%$. We further consider two distant superconducting qubits with their respective interfaces joined by an optical fiber and show a quantum transfer fidelity exceeding $90\%$ between the two distant qubits.

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Keyu Xia, Jason Twamley. 2014-08-26. Solid state optical interconnect between distant superconducting quantum chips. https://doi.org/10.1103/physreva.91.042307

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