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Realization of a crosstalk-avoided quantum network node using dual-type qubits of the same ion species.
- Source :
-
Nature communications [Nat Commun] 2024 Jan 03; Vol. 15 (1), pp. 204. Date of Electronic Publication: 2024 Jan 03. - Publication Year :
- 2024
-
Abstract
- Generating ion-photon entanglement is a crucial step for scalable trapped-ion quantum networks. To avoid the crosstalk on memory qubits carrying quantum information, it is common to use a different ion species for ion-photon entanglement generation such that the scattered photons are far off-resonant for the memory qubits. However, such a dual-species scheme can be subject to inefficient sympathetic cooling due to the mass mismatch of the ions. Here we demonstrate a trapped-ion quantum network node in the dual-type qubit scheme where two types of qubits are encoded in the S and F hyperfine structure levels of <superscript>171</superscript> Yb <superscript>+</superscript> ions. We generate ion photon entanglement for the S-qubit in a typical timescale of hundreds of milliseconds, and verify its small crosstalk on a nearby F-qubit with coherence time above seconds. Our work demonstrates an enabling function of the dual-type qubit scheme for scalable quantum networks.<br /> (© 2024. The Author(s).)
Details
- Language :
- English
- ISSN :
- 2041-1723
- Volume :
- 15
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Nature communications
- Publication Type :
- Academic Journal
- Accession number :
- 38172118
- Full Text :
- https://doi.org/10.1038/s41467-023-44220-z