Qubit teleportation between a memory-compatible photonic time-bin qubit and a solid-state quantum network node
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2024-11-02 |
| Journal | npj Quantum Information |
| Authors | Mariagrazia Iuliano, Marie-Christine Slater, Arian Stolk, Matthew J. Weaver, Tanmoy Chakraborty |
| Institutions | University of Geneva, QuTech |
| Citations | 7 |
Abstract
Section titled āAbstractāAbstract 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 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 well above the classical bound. This proof-of-concept experiment shows the feasibility of interconnecting different quantum network hardware.