Quasiperiodic circuit quantum electrodynamics
Abstract Superconducting circuits are an extremely versatile platform to realize quantum information hardware and to emulate topological materials. We here show how a simple arrangement of capacitors and conventional superconductor-insulator-superconductor junctions can realize an even broader class...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-11-01
|
| Series: | npj Quantum Information |
| Online Access: | https://doi.org/10.1038/s41534-023-00786-6 |
| _version_ | 1797557481420881920 |
|---|---|
| author | T. Herrig J. H. Pixley E. J. König R.-P. Riwar |
| author_facet | T. Herrig J. H. Pixley E. J. König R.-P. Riwar |
| author_sort | T. Herrig |
| collection | DOAJ |
| description | Abstract Superconducting circuits are an extremely versatile platform to realize quantum information hardware and to emulate topological materials. We here show how a simple arrangement of capacitors and conventional superconductor-insulator-superconductor junctions can realize an even broader class of systems, in the form of a nonlinear capacitive element which is quasiperiodic with respect to the quantized Cooper-pair charge. Our setup allows to create protected Dirac points defined in the transport degrees of freedom, whose presence leads to a suppression of the classical finite-frequency current noise. Furthermore, the quasiperiodicity can emulate Anderson localization in charge space, measurable via vanishing charge quantum fluctuations. The realization by means of the macroscopic transport degrees of freedom allows for a straightforward generalization to arbitrary dimensions and implements truly non-interacting versions of the considered models. As an outlook, we discuss potential ideas to simulate a transport version of the magic-angle effect known from twisted bilayer graphene. |
| first_indexed | 2024-03-10T17:17:40Z |
| format | Article |
| id | doaj.art-e440533a912244458f402aa9c9bda124 |
| institution | Directory Open Access Journal |
| issn | 2056-6387 |
| language | English |
| last_indexed | 2024-03-10T17:17:40Z |
| publishDate | 2023-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Information |
| spelling | doaj.art-e440533a912244458f402aa9c9bda1242023-11-20T10:28:10ZengNature Portfolionpj Quantum Information2056-63872023-11-019111010.1038/s41534-023-00786-6Quasiperiodic circuit quantum electrodynamicsT. Herrig0J. H. Pixley1E. J. König2R.-P. Riwar3Peter Grünberg Institute, Theoretical Nanoelectronics, Forschungszentrum JülichDepartment of Physics and Astronomy, Center for Materials Theory, Rutgers UniversityMax-Planck Institute for Solid State ResearchPeter Grünberg Institute, Theoretical Nanoelectronics, Forschungszentrum JülichAbstract Superconducting circuits are an extremely versatile platform to realize quantum information hardware and to emulate topological materials. We here show how a simple arrangement of capacitors and conventional superconductor-insulator-superconductor junctions can realize an even broader class of systems, in the form of a nonlinear capacitive element which is quasiperiodic with respect to the quantized Cooper-pair charge. Our setup allows to create protected Dirac points defined in the transport degrees of freedom, whose presence leads to a suppression of the classical finite-frequency current noise. Furthermore, the quasiperiodicity can emulate Anderson localization in charge space, measurable via vanishing charge quantum fluctuations. The realization by means of the macroscopic transport degrees of freedom allows for a straightforward generalization to arbitrary dimensions and implements truly non-interacting versions of the considered models. As an outlook, we discuss potential ideas to simulate a transport version of the magic-angle effect known from twisted bilayer graphene.https://doi.org/10.1038/s41534-023-00786-6 |
| spellingShingle | T. Herrig J. H. Pixley E. J. König R.-P. Riwar Quasiperiodic circuit quantum electrodynamics npj Quantum Information |
| title | Quasiperiodic circuit quantum electrodynamics |
| title_full | Quasiperiodic circuit quantum electrodynamics |
| title_fullStr | Quasiperiodic circuit quantum electrodynamics |
| title_full_unstemmed | Quasiperiodic circuit quantum electrodynamics |
| title_short | Quasiperiodic circuit quantum electrodynamics |
| title_sort | quasiperiodic circuit quantum electrodynamics |
| url | https://doi.org/10.1038/s41534-023-00786-6 |
| work_keys_str_mv | AT therrig quasiperiodiccircuitquantumelectrodynamics AT jhpixley quasiperiodiccircuitquantumelectrodynamics AT ejkonig quasiperiodiccircuitquantumelectrodynamics AT rpriwar quasiperiodiccircuitquantumelectrodynamics |