Fluxonium-Based Artificial Molecule with a Tunable Magnetic Moment
Engineered quantum systems allow us to observe phenomena that are not easily accessible naturally. The LEGO®-like nature of superconducting circuits makes them particularly suited for building and coupling artificial atoms. Here, we introduce an artificial molecule, composed of two strongly coupled...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2017-08-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.7.031037 |
| _version_ | 1819010982706413568 |
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| author | A. Kou W. C. Smith U. Vool R. T. Brierley H. Meier L. Frunzio S. M. Girvin L. I. Glazman M. H. Devoret |
| author_facet | A. Kou W. C. Smith U. Vool R. T. Brierley H. Meier L. Frunzio S. M. Girvin L. I. Glazman M. H. Devoret |
| author_sort | A. Kou |
| collection | DOAJ |
| description | Engineered quantum systems allow us to observe phenomena that are not easily accessible naturally. The LEGO®-like nature of superconducting circuits makes them particularly suited for building and coupling artificial atoms. Here, we introduce an artificial molecule, composed of two strongly coupled fluxonium atoms, which possesses a tunable magnetic moment. Using an applied external flux, one can tune the molecule between two regimes: one in which the ground-excited state manifold has a magnetic dipole moment and one in which the ground-excited state manifold has only a magnetic quadrupole moment. By varying the applied external flux, we find the coherence of the molecule to be limited by local flux noise. The ability to engineer and control artificial molecules paves the way for building more complex circuits for quantum simulation and protected qubits. |
| first_indexed | 2024-12-21T01:20:55Z |
| format | Article |
| id | doaj.art-ca374b3949f746789b12357f88e26e52 |
| institution | Directory Open Access Journal |
| issn | 2160-3308 |
| language | English |
| last_indexed | 2024-12-21T01:20:55Z |
| publishDate | 2017-08-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review X |
| spelling | doaj.art-ca374b3949f746789b12357f88e26e522022-12-21T19:20:40ZengAmerican Physical SocietyPhysical Review X2160-33082017-08-017303103710.1103/PhysRevX.7.031037Fluxonium-Based Artificial Molecule with a Tunable Magnetic MomentA. KouW. C. SmithU. VoolR. T. BrierleyH. MeierL. FrunzioS. M. GirvinL. I. GlazmanM. H. DevoretEngineered quantum systems allow us to observe phenomena that are not easily accessible naturally. The LEGO®-like nature of superconducting circuits makes them particularly suited for building and coupling artificial atoms. Here, we introduce an artificial molecule, composed of two strongly coupled fluxonium atoms, which possesses a tunable magnetic moment. Using an applied external flux, one can tune the molecule between two regimes: one in which the ground-excited state manifold has a magnetic dipole moment and one in which the ground-excited state manifold has only a magnetic quadrupole moment. By varying the applied external flux, we find the coherence of the molecule to be limited by local flux noise. The ability to engineer and control artificial molecules paves the way for building more complex circuits for quantum simulation and protected qubits.http://doi.org/10.1103/PhysRevX.7.031037 |
| spellingShingle | A. Kou W. C. Smith U. Vool R. T. Brierley H. Meier L. Frunzio S. M. Girvin L. I. Glazman M. H. Devoret Fluxonium-Based Artificial Molecule with a Tunable Magnetic Moment Physical Review X |
| title | Fluxonium-Based Artificial Molecule with a Tunable Magnetic Moment |
| title_full | Fluxonium-Based Artificial Molecule with a Tunable Magnetic Moment |
| title_fullStr | Fluxonium-Based Artificial Molecule with a Tunable Magnetic Moment |
| title_full_unstemmed | Fluxonium-Based Artificial Molecule with a Tunable Magnetic Moment |
| title_short | Fluxonium-Based Artificial Molecule with a Tunable Magnetic Moment |
| title_sort | fluxonium based artificial molecule with a tunable magnetic moment |
| url | http://doi.org/10.1103/PhysRevX.7.031037 |
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