Floquet-tailored Rydberg interactions
Abstract The Rydberg blockade is a key ingredient for entangling atoms in arrays. However, it requires atoms to be spaced well within the blockade radius, which limits the range of local quantum gates. Here we break this constraint using Floquet frequency modulation, with which we demonstrate Rydber...
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Format: | Article |
Language: | English |
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Nature Portfolio
2023-11-01
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Series: | Nature Communications |
Online Access: | https://doi.org/10.1038/s41467-023-42899-8 |
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author | Luheng Zhao Michael Dao Kang Lee Mohammad Mujahid Aliyu Huanqian Loh |
author_facet | Luheng Zhao Michael Dao Kang Lee Mohammad Mujahid Aliyu Huanqian Loh |
author_sort | Luheng Zhao |
collection | DOAJ |
description | Abstract The Rydberg blockade is a key ingredient for entangling atoms in arrays. However, it requires atoms to be spaced well within the blockade radius, which limits the range of local quantum gates. Here we break this constraint using Floquet frequency modulation, with which we demonstrate Rydberg-blockade entanglement beyond the traditional blockade radius and show how the enlarged entanglement range improves qubit connectivity in a neutral atom array. Further, we find that the coherence of entangled states can be extended under Floquet frequency modulation. Finally, we realize Rydberg anti-blockade states for two sodium Rydberg atoms within the blockade radius. Such Rydberg anti-blockade states for atoms at close range enables the robust preparation of strongly-interacting, long-lived Rydberg states, yet their steady-state population cannot be achieved with only the conventional static drive. Our work transforms between the paradigmatic regimes of Rydberg blockade versus anti-blockade and paves the way for realizing more connected, coherent, and tunable neutral atom quantum processors with a single approach. |
first_indexed | 2024-03-11T11:03:04Z |
format | Article |
id | doaj.art-3d9237f0324c4231ad04160604816919 |
institution | Directory Open Access Journal |
issn | 2041-1723 |
language | English |
last_indexed | 2024-03-11T11:03:04Z |
publishDate | 2023-11-01 |
publisher | Nature Portfolio |
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series | Nature Communications |
spelling | doaj.art-3d9237f0324c4231ad041606048169192023-11-12T12:22:50ZengNature PortfolioNature Communications2041-17232023-11-011411710.1038/s41467-023-42899-8Floquet-tailored Rydberg interactionsLuheng Zhao0Michael Dao Kang Lee1Mohammad Mujahid Aliyu2Huanqian Loh3Centre for Quantum Technologies, National University of SingaporeCentre for Quantum Technologies, National University of SingaporeCentre for Quantum Technologies, National University of SingaporeCentre for Quantum Technologies, National University of SingaporeAbstract The Rydberg blockade is a key ingredient for entangling atoms in arrays. However, it requires atoms to be spaced well within the blockade radius, which limits the range of local quantum gates. Here we break this constraint using Floquet frequency modulation, with which we demonstrate Rydberg-blockade entanglement beyond the traditional blockade radius and show how the enlarged entanglement range improves qubit connectivity in a neutral atom array. Further, we find that the coherence of entangled states can be extended under Floquet frequency modulation. Finally, we realize Rydberg anti-blockade states for two sodium Rydberg atoms within the blockade radius. Such Rydberg anti-blockade states for atoms at close range enables the robust preparation of strongly-interacting, long-lived Rydberg states, yet their steady-state population cannot be achieved with only the conventional static drive. Our work transforms between the paradigmatic regimes of Rydberg blockade versus anti-blockade and paves the way for realizing more connected, coherent, and tunable neutral atom quantum processors with a single approach.https://doi.org/10.1038/s41467-023-42899-8 |
spellingShingle | Luheng Zhao Michael Dao Kang Lee Mohammad Mujahid Aliyu Huanqian Loh Floquet-tailored Rydberg interactions Nature Communications |
title | Floquet-tailored Rydberg interactions |
title_full | Floquet-tailored Rydberg interactions |
title_fullStr | Floquet-tailored Rydberg interactions |
title_full_unstemmed | Floquet-tailored Rydberg interactions |
title_short | Floquet-tailored Rydberg interactions |
title_sort | floquet tailored rydberg interactions |
url | https://doi.org/10.1038/s41467-023-42899-8 |
work_keys_str_mv | AT luhengzhao floquettailoredrydberginteractions AT michaeldaokanglee floquettailoredrydberginteractions AT mohammadmujahidaliyu floquettailoredrydberginteractions AT huanqianloh floquettailoredrydberginteractions |