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    Multi-mode ultra-strong coupling in circuit quantum electrodynamics

    Sal J. Bosman, Mario F. Gely, Vibhor Singh, Alessandro Bruno, Daniel Bothner, Gary A. Steele
    npj quantum information, 01 October 2017, Vol.3(1), pp.1-6 [Peer Reviewed Journal]
    Directory of Open Access Journals (DOAJ)
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    Title: Multi-mode ultra-strong coupling in circuit quantum electrodynamics
    Author: Sal J. Bosman; Mario F. Gely; Vibhor Singh; Alessandro Bruno; Daniel Bothner; Gary A. Steele
    Subject: Computer Science
    Description: Quantum mechanics: Light-matter interaction in the extreme When light couples to an atom, the two exchange quanta of energy at a frequency called the coupling rate. It has been predicted that by increasing this coupling to rates much larger than anything present in nature, “spooky” entangled states of light would appear. A team led by Gary Steele in the Netherlands at the Delft University of Technology has realized extreme coupling rates using man-made superconducting atoms coupled to microwave “light” in electromagnetic resonators. In the experiment, the atom is very strongly coupled to many different modes of the resonator at the same time, a problem which led to long-standing puzzles in quantum mechanics. Studying such engineered quantum atoms may help us better understand the fundamental interaction of light and matter.
    Is part of: npj quantum information, 01 October 2017, Vol.3(1), pp.1-6
    Identifier: 2056-6387 (E-ISSN); 10.1038/s41534-017-0046-y (DOI)

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    Multi-mode ultra-strong coupling in circuit quantum electrodynamics

    Bosman, Sal, Gely, Mario, Singh, Vibhor, Bruno, Alessandro, Bothner, Daniel, Steele, Gary
    NPJ Quantum Information, Oct 2017, Vol.3, pp.1-6 [Peer Reviewed Journal]
    © ProQuest LLC All rights reserved, Health & Medical Collection (Alumni edition), Health & Medical Collection, Biological Science Database, Publicly Available Content Database, ProQuest Biological Science Collection, ProQuest Central, ProQuest Hospital Collection, ProQuest Natural Science Collection, Hospital Premium Collection (Alumni edition), ProQuest SciTech Collection, ProQuest Health & Medical Complete, Natural Science Collection, ProQuest Central (new), ProQuest Central K-12, ProQuest Central Korea, SciTech Premium Collection, Health Research Premium Collection, Health Research Premium Collection (Alumni edition), ProQuest Central Essentials, ProQuest Central China, ProQuest One Academic
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    Title: Multi-mode ultra-strong coupling in circuit quantum electrodynamics
    Author: Bosman, Sal; Gely, Mario; Singh, Vibhor; Bruno, Alessandro; Bothner, Daniel; Steele, Gary
    Subject: Optics ; Capacitance ; Quantum Theory ; Vacuum ; Light ; Hybridization
    Description: With the introduction of superconducting circuits into the field of quantum optics, many experimental demonstrations of the quantum physics of an artificial atom coupled to a single-mode light field have been realized. Engineering such quantum systems offers the opportunity to explore extreme regimes of light-matter interaction that are inaccessible with natural systems. For instance the coupling strength g can be increased until it is comparable with the atomic or mode frequency ωa,m and the atom can be coupled to multiple modes which has always challenged our understanding of light-matter interaction. Here, we experimentally realize a transmon qubit in the ultra-strong coupling regime, reaching coupling ratios of g/ωm = 0.19 and we measure multi-mode interactions through a hybridization of the qubit up to the fifth mode of the resonator. This is enabled by a qubit with 88% of its capacitance formed by a vacuum-gap capacitance with the center conductor of a coplanar waveguide resonator....
    Is part of: NPJ Quantum Information, Oct 2017, Vol.3, pp.1-6
    Identifier: 20566387 (E-ISSN); 10.1038/s41534-017-0046-y (DOI)

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    Multi-mode ultra-strong coupling in circuit quantum electrodynamics

    Bosman, S.J., Gely, M.F., Singh, Vibhor, Bruno, A., Bothner, D., Steele, G.A.
    NPJ Quantum Information, 2017, Vol.3(1), pp.urn:issn:2056-6387 [Peer Reviewed Journal]
    NARCIS (National Academic Research and Collaborations Information System)
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    Title: Multi-mode ultra-strong coupling in circuit quantum electrodynamics
    Author: Bosman, S.J.; Gely, M.F.; Singh, Vibhor; Bruno, A.; Bothner, D.; Steele, G.A.
    Description: With the introduction of superconducting circuits into the field of quantum optics, many experimental demonstrations of the quantum physics of an artificial atom coupled to a single-mode light field have been realized. Engineering such quantum systems offers the opportunity to explore extreme regimes of light-matter interaction that are inaccessible with natural systems. For instance the coupling strength g can be increased until it is comparable with the atomic or mode frequency ωa,m and the atom can be coupled to multiple modes which has always challenged our understanding of light-matter interaction. Here, we experimentally realize a transmon qubit in the ultra-strong coupling regime, reaching coupling ratios of g/ωm = 0.19 and we measure multi-mode interactions through a hybridization of the qubit up to the fifth mode of the resonator. This is enabled by a qubit with 88% of its capacitance formed by a vacuum-gap capacitance with the center conductor of a coplanar...
    Is part of: NPJ Quantum Information, 2017, Vol.3(1), pp.urn:issn:2056-6387
    Identifier: (ISSN); 2056-6387 (ISSN)

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    Multi-mode ultra-strong coupling in circuit quantum electrodynamics

    Bosman, Sal J., Gely, Mario F., Singh, Vibhor, Bruno, Alessandro, Bothner, Daniel, Steele, Gary A.
    npj Quantum Information 3, Article number: 46 (2017) [Peer Reviewed Journal]
    Cornell University
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    Title: Multi-mode ultra-strong coupling in circuit quantum electrodynamics
    Author: Bosman, Sal J.; Gely, Mario F.; Singh, Vibhor; Bruno, Alessandro; Bothner, Daniel; Steele, Gary A.
    Subject: Quantum Physics ; Condensed Matter - Mesoscale And Nanoscale Physics
    Description: With the introduction of superconducting circuits into the field of quantum optics, many novel experimental demonstrations of the quantum physics of an artificial atom coupled to a single-mode light field have been realized. Engineering such quantum systems offers the opportunity to explore extreme regimes of light-matter interaction that are inaccessible with natural systems. For instance the coupling strength $g$ can be increased until it is comparable with the atomic or mode frequency $\omega_{a,m}$ and the atom can be coupled to multiple modes which has always challenged our understanding of light-matter interaction. Here, we experimentally realize the first Transmon qubit in the ultra-strong coupling regime, reaching coupling ratios of $g/\omega_{m}=0.19$ and we measure multi-mode interactions through a hybridization of the qubit up to the fifth mode of the resonator. This is enabled by a qubit with 88% of its capacitance formed by a vacuum-gap capacitance with the center conductor of a coplanar waveguide resonator. In addition to potential applications in quantum information technologies due to its small size and localization of electric fields in vacuum, this new architecture offers the potential to further explore the novel regime of multi-mode ultra-strong coupling. Comment: 15 pages, 9 figures
    Is part of: npj Quantum Information 3, Article number: 46 (2017)
    Identifier: 1704.06208 (ARXIV ID)

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    Multi-mode ultra-strong coupling in circuit quantum electrodynamics

    Bosman, Sal, Gely, Mario, Singh, Vibhor, Bruno, Alessandro, Bothner, Daniel, Steele, Gary
    arXiv.org, Apr 20, 2017 [Peer Reviewed Journal]
    © ProQuest LLC All rights reserved, Engineering Database, Publicly Available Content Database, ProQuest Engineering Collection, ProQuest Technology Collection, ProQuest SciTech Collection, Materials Science & Engineering Database, ProQuest Central (new), ProQuest Central Korea, SciTech Premium Collection, Technology Collection, ProQuest Central Essentials, ProQuest One Academic, Engineering Collection (ProQuest)
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    Title: Multi-mode ultra-strong coupling in circuit quantum electrodynamics
    Author: Bosman, Sal; Gely, Mario; Singh, Vibhor; Bruno, Alessandro; Bothner, Daniel; Steele, Gary
    Contributor: Steele, Gary (pacrepositoryorg)
    Subject: Quantum Theory ; Resonators ; Coplanar Waveguides ; Quantum Phenomena ; Quantum Optics ; Quantum Electrodynamics ; Coupled Modes ; Capacitance ; Information Technology ; Electric Fields ; Conductors ; Quantum Dots ; Quantum Theory ; Coupling ; Qubits (Quantum Computing)
    Description: With the introduction of superconducting circuits into the field of quantum optics, many novel experimental demonstrations of the quantum physics of an artificial atom coupled to a single-mode light field have been realized. Engineering such quantum systems offers the opportunity to explore extreme regimes of light-matter interaction that are inaccessible with natural systems. For instance the coupling strength \(g\) can be increased until it is comparable with the atomic or mode frequency \(\omega_{a,m}\) and the atom can be coupled to multiple modes which has always challenged our understanding of light-matter interaction. Here, we experimentally realize the first Transmon qubit in the ultra-strong coupling regime, reaching coupling ratios of \(g/\omega_{m}=0.19\) and we measure multi-mode interactions through a hybridization of the qubit up to the fifth mode of the resonator. This is enabled by a qubit with 88% of its capacitance formed by a vacuum-gap capacitance with the center conductor...
    Is part of: arXiv.org, Apr 20, 2017
    Identifier: 2331-8422 (E-ISSN); 10.1038/s41534-017-0046-y (DOI)