{"title":"反铁磁磁子对的腔增强光学操纵","authors":"Tahereh Sadat Parvini, Anna-Luisa E. Romling, Sanchar Sharma, Silvia Viola Kusminskiy","doi":"arxiv-2409.10659","DOIUrl":null,"url":null,"abstract":"The optical manipulation of magnon states in antiferromagnets (AFMs) holds\nsignificant potential for advancing AFM-based computing devices. In particular,\ntwo-magnon Raman scattering processes are known to generate entangled\nmagnon-pairs with opposite momenta. We propose to harness the dynamical\nbackaction of a driven optical cavity coupled to these processes, to obtain\nsteady states of squeezed magnon-pairs, represented by squeezed Perelomov\ncoherent states. The system's dynamics can be controlled by the strength and\ndetuning of the optical drive and by the cavity losses. In the limit of a fast\n(or lossy) cavity, we obtain an effective equation of motion in the Perelomov\nrepresentation, in terms of a light-induced frequency shift and a collective\ninduced dissipation which sign can be controlled by the detuning of the drive.\nIn the red-detuned regime, a critical power threshold defines a region where\nmagnon-pair operators exhibit squeezing, a resource for quantum information,\nmarked by distinct attractor points. Beyond this threshold, the system evolves\nto limit cycles of magnon-pairs. In contrast, for resonant and blue detuning\nregimes, the magnon-pair dynamics exhibit limit cycles and chaotic phases,\nrespectively, for low and high pump powers. Observing strongly squeezed states,\nauto-oscillating limit cycles, and chaos in this platform presents promising\nopportunities for future quantum information processing, communication\ndevelopments, and materials studies.","PeriodicalId":501137,"journal":{"name":"arXiv - PHYS - Mesoscale and Nanoscale Physics","volume":"106 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Cavity-Enhanced Optical Manipulation of Antiferromagnetic Magnon-Pairs\",\"authors\":\"Tahereh Sadat Parvini, Anna-Luisa E. Romling, Sanchar Sharma, Silvia Viola Kusminskiy\",\"doi\":\"arxiv-2409.10659\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The optical manipulation of magnon states in antiferromagnets (AFMs) holds\\nsignificant potential for advancing AFM-based computing devices. In particular,\\ntwo-magnon Raman scattering processes are known to generate entangled\\nmagnon-pairs with opposite momenta. We propose to harness the dynamical\\nbackaction of a driven optical cavity coupled to these processes, to obtain\\nsteady states of squeezed magnon-pairs, represented by squeezed Perelomov\\ncoherent states. The system's dynamics can be controlled by the strength and\\ndetuning of the optical drive and by the cavity losses. In the limit of a fast\\n(or lossy) cavity, we obtain an effective equation of motion in the Perelomov\\nrepresentation, in terms of a light-induced frequency shift and a collective\\ninduced dissipation which sign can be controlled by the detuning of the drive.\\nIn the red-detuned regime, a critical power threshold defines a region where\\nmagnon-pair operators exhibit squeezing, a resource for quantum information,\\nmarked by distinct attractor points. Beyond this threshold, the system evolves\\nto limit cycles of magnon-pairs. In contrast, for resonant and blue detuning\\nregimes, the magnon-pair dynamics exhibit limit cycles and chaotic phases,\\nrespectively, for low and high pump powers. Observing strongly squeezed states,\\nauto-oscillating limit cycles, and chaos in this platform presents promising\\nopportunities for future quantum information processing, communication\\ndevelopments, and materials studies.\",\"PeriodicalId\":501137,\"journal\":{\"name\":\"arXiv - PHYS - Mesoscale and Nanoscale Physics\",\"volume\":\"106 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - Mesoscale and Nanoscale Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.10659\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Mesoscale and Nanoscale Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.10659","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Cavity-Enhanced Optical Manipulation of Antiferromagnetic Magnon-Pairs
The optical manipulation of magnon states in antiferromagnets (AFMs) holds
significant potential for advancing AFM-based computing devices. In particular,
two-magnon Raman scattering processes are known to generate entangled
magnon-pairs with opposite momenta. We propose to harness the dynamical
backaction of a driven optical cavity coupled to these processes, to obtain
steady states of squeezed magnon-pairs, represented by squeezed Perelomov
coherent states. The system's dynamics can be controlled by the strength and
detuning of the optical drive and by the cavity losses. In the limit of a fast
(or lossy) cavity, we obtain an effective equation of motion in the Perelomov
representation, in terms of a light-induced frequency shift and a collective
induced dissipation which sign can be controlled by the detuning of the drive.
In the red-detuned regime, a critical power threshold defines a region where
magnon-pair operators exhibit squeezing, a resource for quantum information,
marked by distinct attractor points. Beyond this threshold, the system evolves
to limit cycles of magnon-pairs. In contrast, for resonant and blue detuning
regimes, the magnon-pair dynamics exhibit limit cycles and chaotic phases,
respectively, for low and high pump powers. Observing strongly squeezed states,
auto-oscillating limit cycles, and chaos in this platform presents promising
opportunities for future quantum information processing, communication
developments, and materials studies.