| Full text | |
| Author(s): |
Diniz, Ciro Micheletti
;
Villas-Boas, Celso J.
;
Santos, Alan C.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | QUANTUM SCIENCE AND TECHNOLOGY; v. 10, n. 2, p. 12-pg., 2025-04-01. |
| Abstract | |
A fast and scalable scheme for multi-qubit resetting in superconducting quantum processors is proposed by exploiting the feasibility of frequency-tunable transmon qubits and transmon-like couplers to engineer a full programmable superconducting erasing head. We demonstrate the emergence of collective effects that lead to a decoherence-free subspace during the erasing process. The presence of such a subspace negatively impacts the device's performance and has been overlooked in other multi-qubit chips. To circumvent this issue and pave the way to the device's scalability, we employ tunable frequency couplers to identify a specific set of parameters that enables us to erase even those states within this subspace, ensuring the simultaneous multi-qubit resetting, verified here for the two-qubit case. In contrast, we show that collectivity effects can also emerge as an ingredient to speed up the erasing process. To end, we offer a proposal to build up integrated superconducting processors that can be efficiently connected to erasure heads in a scalable way. (AU) | |
| FAPESP's process: | 22/10218-2 - Information Erasure in Superconducting Qubit-based Quantum Computers |
| Grantee: | Ciro Micheletti Diniz |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 22/00209-6 - Second generation quantum technologies |
| Grantee: | Celso Jorge Villas-Bôas |
| Support Opportunities: | Research Projects - Thematic Grants |