Tunneling spectroscopy in superconducting circuit lattices
We demonstrate tunneling spectroscopy of synthetic quantum matter in superconducting circuit lattices. We measure site-resolved excitation spectra by coupling the lattice to engineered driven-dissipative particle baths that serve as local tunneling probes. Using incoherent particle source and drain,...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2025-05-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.7.L022038 |
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| _version_ | 1850271059591299072 |
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| author | Botao Du Qihao Guo Santiago López Ruichao Ma |
| author_facet | Botao Du Qihao Guo Santiago López Ruichao Ma |
| author_sort | Botao Du |
| collection | DOAJ |
| description | We demonstrate tunneling spectroscopy of synthetic quantum matter in superconducting circuit lattices. We measure site-resolved excitation spectra by coupling the lattice to engineered driven-dissipative particle baths that serve as local tunneling probes. Using incoherent particle source and drain, we independently extract quasiparticle and quasihole spectra and reconstruct the spatial structure of collective excitations. We perform spectroscopy of a strongly interacting Bose-Hubbard lattice to measure changes in energy spectra for superfluid and Mott-insulator states at different densities and observe the effects of three-body interactions. Our results provide a toolset for characterizing many-body states in analog quantum simulators. |
| format | Article |
| id | doaj-art-e8019e56642d4ea99394329a5627cdce |
| institution | OA Journals |
| issn | 2643-1564 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj-art-e8019e56642d4ea99394329a5627cdce2025-08-20T01:52:21ZengAmerican Physical SocietyPhysical Review Research2643-15642025-05-0172L02203810.1103/PhysRevResearch.7.L022038Tunneling spectroscopy in superconducting circuit latticesBotao DuQihao GuoSantiago LópezRuichao MaWe demonstrate tunneling spectroscopy of synthetic quantum matter in superconducting circuit lattices. We measure site-resolved excitation spectra by coupling the lattice to engineered driven-dissipative particle baths that serve as local tunneling probes. Using incoherent particle source and drain, we independently extract quasiparticle and quasihole spectra and reconstruct the spatial structure of collective excitations. We perform spectroscopy of a strongly interacting Bose-Hubbard lattice to measure changes in energy spectra for superfluid and Mott-insulator states at different densities and observe the effects of three-body interactions. Our results provide a toolset for characterizing many-body states in analog quantum simulators.http://doi.org/10.1103/PhysRevResearch.7.L022038 |
| spellingShingle | Botao Du Qihao Guo Santiago López Ruichao Ma Tunneling spectroscopy in superconducting circuit lattices Physical Review Research |
| title | Tunneling spectroscopy in superconducting circuit lattices |
| title_full | Tunneling spectroscopy in superconducting circuit lattices |
| title_fullStr | Tunneling spectroscopy in superconducting circuit lattices |
| title_full_unstemmed | Tunneling spectroscopy in superconducting circuit lattices |
| title_short | Tunneling spectroscopy in superconducting circuit lattices |
| title_sort | tunneling spectroscopy in superconducting circuit lattices |
| url | http://doi.org/10.1103/PhysRevResearch.7.L022038 |
| work_keys_str_mv | AT botaodu tunnelingspectroscopyinsuperconductingcircuitlattices AT qihaoguo tunnelingspectroscopyinsuperconductingcircuitlattices AT santiagolopez tunnelingspectroscopyinsuperconductingcircuitlattices AT ruichaoma tunnelingspectroscopyinsuperconductingcircuitlattices |