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

• URL: http://arxiv.org/abs/2403.18581v1
• Date: Wed, 27 Mar 2024 14:01:58 GMT
• Title: Qubit teleportation between a memory-compatible photonic time-bin qubit and a solid-state quantum network node
• Authors: 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,
• Abstract summary: interface links a diamond NV center quantum network node and 795nm photonic time-bin qubits. Two-photon quantum interference shows high indistinguishability of (89.5 $pm$ 1.9)% between converted 795nm photons and the native NV center photons.
• Score: 11.76767740960241
• License: http://creativecommons.org/licenses/by/4.0/
• 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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