Back to Search
Start Over
Multipartite Entanglement in Rabi-Driven Superconducting Qubits
- Source :
- PRX Quantum, Vol 3, Iss 4, p 040322 (2022)
- Publication Year :
- 2022
- Publisher :
- American Physical Society, 2022.
-
Abstract
- The exploration of highly connected networks of qubits is invaluable for implementing various quantum algorithms and simulations, as it allows for entangling qubits with reduced circuit depth. Here, we demonstrate a multiqubit sideband tone-assisted Rabi-driven gate. Our scheme is inspired by the ion-qubit Mølmer-Sørensen gate and is mediated by a shared photonic mode and Rabi-driven superconducting qubits, which relaxes restrictions on qubit frequencies during fabrication and supports scalability. We achieve a two-qubit gate with a maximum state fidelity of 95% in 310 ns, a three-qubit gate with a state fidelity of 90.5% in 217 ns, and a four-qubit gate with a state fidelity of 66% in 200 ns. Furthermore, we develop a model of the gate that shows that the four-qubit gate is limited by shared resonator losses and the spread of qubit-resonator couplings, which must be addressed to reach high-fidelity operations.
- Subjects :
- Physics
QC1-999
Computer software
QA76.75-76.765
Subjects
Details
- Language :
- English
- ISSN :
- 26913399
- Volume :
- 3
- Issue :
- 4
- Database :
- Directory of Open Access Journals
- Journal :
- PRX Quantum
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.6f7a652fa4c429aab9c79400cf7ce0b
- Document Type :
- article
- Full Text :
- https://doi.org/10.1103/PRXQuantum.3.040322