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Superconducting Qubits Open Quantum Systems Decoherence

Collective preparation of large quantum registers with high fidelity

arXiv
Authors: Lorenzo Buffoni, Michele Campisi

Year

2024

Paper ID

66160

Status

Preprint

Abstract Read

~2 min

Abstract Words

105

Citations

N/A

Abstract

We report on the preparation of a large quantum register of 5612 qubits, with the unprecedented high global fidelity of Fsimeq 0.9956. This was achieved by applying an improved cooperative quantum information erasure (CQIE) protocol [Buffoni, L. and Campisi, M., Quantum 7, 961 (2023)] to a programmable network of superconducting qubits featuring a high connectivity. At variance with the standard method based on the individual reset of each qubit in parallel, here the quantum register is treated as a whole, thus avoiding the well-known orthogonality catastrophe wehereby even an extremely high individual reset fidelity f results in vanishing global fidelities F=fN with growing number N of qubits.

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  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
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  • We report on the preparation of a large quantum register of 5612 qubits, with the unprecedented high global fidelity of Fsimeq 0.9956.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2406.16706 [2] arXiv https://arxiv.org/abs/2406.16706 [3] Publisher https://arxiv.org/abs/2406.16706

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