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arXiv · 2403.18581

Qubit teleportation between a memory-compatible photonic time-bin qubit and a solid-state quantum network node

Mariagrazia Iuliano·Marie-Christine Slater·Arian J. Stolk·Matthew J. Weaver·Tanmoy Chakraborty·Elsie Loukiantchenko·Gustavo Castro do Amaral·Nir Alfasi·Mariya O. Sholkina·Wolfgang Tittel·Ronald Hanson
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Abstract

We report on a quantum interface linking a diamond NV center quantum network node and 795nm photonic time-bin qubits compatible with Thulium and Rubidium quantum memories. The interface makes use of two-stage low-noise quantum frequency conversion and waveform shaping to match temporal and spectral photon profiles. Two-photon quantum interference shows high indistinguishability of (89.5 $\pm$ 1.9)% between converted 795nm photons and the native NV center photons. We use the interface to demonstrate quantum teleportation including real-time feedforward from an unbiased set of 795nm photonic qubit input states to the NV center spin qubit, achieving a teleportation fidelity of (75.5 $\pm$ 1.0)%. This proof-of-concept experiment shows the feasibility of interconnecting different quantum network hardware.

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Mariagrazia Iuliano, Marie-Christine Slater, Arian J. Stolk, Matthew J. Weaver, Tanmoy Chakraborty, Elsie Loukiantchenko, Gustavo Castro do Amaral, Nir Alfasi, Mariya O. Sholkina, Wolfgang Tittel, Ronald Hanson. 2024-03-27. Qubit teleportation between a memory-compatible photonic time-bin qubit and a solid-state quantum network node. https://doi.org/10.1038/s41534-024-00910-0

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