郑文 博士学术报告
Title: Long-Range ZZ Interaction via Resonator-Induced Phase in Superconducting Qubits
Speaker: Wen Zheng (郑文)
Affiliation: Nanjing University (南京大学)
Time: 15:00-16:00, Wednesday, 26th March, 2025 (UTC+8, Beijing Time)
Venue: Room 1502, Shing-Tung Yau Center, Yifu Architecture Building, Sipailou Campus of Southeast University, Nanjing（东南大学四牌楼校区逸夫建筑馆丘成桐中心1502室）
Inviter: Yunfeng Jiang (江云峰)
Abstract
Superconducting qubits have emerged as a pivotal class of solid-state qubits central to the development of scalable quantum processors. However, these qubits exhibit inherent limitations in quantum connectivity, primarily restricted to nearest-neighbor interactions. Such constraints present significant obstacles to qubit scalability and the practical realization of hardware-efficient quantum-error-correcting codes, as well as the execution of intricate quantum simulations that require long-range interactions.Addressing this connectivity limitation, a natural consideration arises in the use of resonators—a fundamental yet widely-utilized structures advantageous for its feasibility in both fabrication and control. By coupling two resonators driven by microwave photons and linking them through a long-distance resonator, the scheme we proposed harnesses resonator-induced phase dynamics to facilitate considerable ZZ interactions among qubits separated by significant distances. This strategy effectively addresses the difficulties of directly coupling qubits over millimeter to sub-meter ranges. The advancement not only extends the practical utility of superconducting qubits but also expands their flexibility, opening up new possibilities for a wide range of applications across diverse quantum computing scenarios.
Speaker
郑文，南京大学博士后，从事超导量子计算研究。目前主要研究方向集中在超导量子处理器的可扩展性技术，涵盖样品工艺的优化、超导量子比特结构的设计以及高精度量子测控技术，同时也在积极探索基于超导量子芯片的量子模拟和量子算法的实现，致力于在构建超导量子处理器的过程中实现具有重要应用价值的技术突破。