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Superconducting Qubits Spin Qubits Silicon Quantum Computing

Device Architecture for Coupling Spin Qubits Via an Intermediate Quantum State

arXiv
Authors: X. G. Croot, S. J. Pauka, J. D. Watson, G. C. Gardner, S. Fallahi, M. J. Manfra, D. J. Reilly

Year

2017

Paper ID

44495

Status

Preprint

Abstract Read

~2 min

Abstract Words

91

Citations

N/A

Abstract

We demonstrate a scalable device architecture that facilitates indirect exchange between singlet-triplet spin qubits, mediated by an intermediate quantum state. The device comprises five quantum dots, which can be independently loaded and unloaded via tunneling to adjacent reservoirs, avoiding charge latch-up common in linear dot arrays. In a step towards realizing two-qubit entanglement based on indirect exchange, the architecture permits precise control over tunnel rates between the singlet-triplet qubits and the intermediate state. We show that by separating qubits by 1 um, the residual capacitive coupling between them is reduced to 7 ueV.

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  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
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  • We demonstrate a scalable device architecture that facilitates indirect exchange between singlet-triplet spin qubits, mediated by an intermediate quantum state.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1707.06479 [2] arXiv https://arxiv.org/abs/1707.06479 [3] Publisher https://arxiv.org/abs/1707.06479

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