Excitation dynamics in inductively coupled fluxonium circuits

Journal Article · Wed Apr 07 00:00:00 EDT 2021 · TBD

OSTI ID:1781674

Barış Özgüler, A.  ^[1]; Manucharyan, Vladimir E. ^[2]; Vavilov, Maxim G. ^[3]

---

1. Fermilab
2. Maryland U.
3. Wisconsin U., Madison

We propose a near-term quantum simulator based on the fluxonium qubits inductively coupled to form a chain. This system provides long coherence time, large anharmonicity, and strong coupling, making it suitable to study Ising spin models. At the half-flux quantum sweet spot, the system is described by the transverse field Ising model (TFIM). We evaluate the propagation of qubit excitations through the system. As disorder increases, the excitations become localized. A single qubit measurement using the circuit QED methods is sufficient to identify localization transition without introducing tunable couplers. We argue that inductively coupled fluxoniums provide opportunities to study localization and many-body effects in highly coherent quantum systems.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1781674
• Report Number(s): FERMILAB-PUB-21-179-QIS; arXiv:2104.03300; oai:inspirehep.net:1861833
• Journal Information: TBD, Journal Name: TBD
• Country of Publication: United States
• Language: English