Realization of Universal Quantum Gates with Spin-Qudits in Colloidal Quantum Dots

Moro, Fabrizio; Fielding, Alistair J.; Turyanska, Lyudmila; Patanè, Amalia

Abstract

Hyperfine interactions in a single Mn‐ion confined in a quantum dot (QD) are exploited to create a qudit, that is, a multilevel quantum‐bit system, with well‐defined, addressable, and robust set of spin states for the realization of universal quantum gates. An arbitrary superposition of states between selected hyperfine energy level pairs is generated and probed by using electron double resonance detected nuclear magnetic resonance (EDNMR). This enables the observation of Rabi oscillations and the experimental realization of NOT and √ SWAP universal quantum gates that are robust against decoherence. Our protocol for cyclical preparation, manipulation, and read‐out of logic gates offers opportunities for the integration of qudits in scalable quantum circuit architectures beyond solid state electron spin qubits.

Citation

Moro, F., Fielding, A. J., Turyanska, L., & Patanè, A. (2019). Realization of Universal Quantum Gates with Spin-Qudits in Colloidal Quantum Dots. Advanced Quantum Technologies, 2(10), 1-6. https://doi.org/10.1002/qute.201900017

• Journal Article Type: Article
• Acceptance Date: Jun 14, 2019
• Online Publication Date: Jul 1, 2019
• Publication Date: Jul 1, 2019
• Deposit Date: Jul 4, 2019
• Publicly Available Date: Jul 2, 2020
• Journal: Advanced Quantum Technologies
• Print ISSN: 2511-9044
• Electronic ISSN: 2511-9044
• Peer Reviewed: Peer Reviewed
• Volume: 2
• Issue: 10
• Article Number: 1900017
• Pages: 1-6
• DOI: https://doi.org/10.1002/qute.201900017
• Public URL: https://nottingham-repository.worktribe.com/output/2268073
• Publisher URL: https://onlinelibrary.wiley.com/doi/full/10.1002/qute.201900017
• Additional Information: This is the peer reviewed version of the following article: Moro, F. , Fielding, A. J., Turyanska, L. and Patanè, A. (2019), Realization of Universal Quantum Gates with Spin‐Qudits in Colloidal Quantum Dots. Adv. Quantum Technol. doi:10.1002/qute.201900017, which has been published in final form at https://onlinelibrary.wiley.com/doi/full/10.1002/qute.201900017]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
• Contract Date: Jul 4, 2019