近日，中国科学技术大学Guanghui Cheng团队报道了真空增强NbSe₂超导性的证据。相关论文于2026年8月19日发表在《自然》杂志上。

真空涨落为材料性质的非侵入性调控提供了一条重要新途径。

研究组给出实验证据表明真空涨落能够增强超导性。NbSe₂是一种层状过渡金属二硫化物，其超导行为已被充分表征，为揭示这一效应提供了清晰的平台。研究组观察到，当NbSe₂嵌入开口环腔谐振器中时，其超导临界温度升高。

在转变温度附近，临界电流和临界场显著增大。该观测结果与理论计算一致，后者表明电子自由度与腔模的杂化降低了超导态的能量。通过提供真空涨落增强超导性的原理验证，该工作建立了一种非侵入性技术，用于调控量子技术这一核心支柱。

附：英文原文

Title: Evidence for vacuum-enhanced superconductivity in NbSe2

Author: Wang, Zheyan, Cardoso, Gabriel, Yang, Liu, Gong, Xun, Zhang, Chi, Zhu, Yufei, Zhang, Dongbo, Pan, Nan, Cai, Hongbing, Chen, Yong P., Jiang, Qing-Dong, Cheng, Guanghui, Wilczek, Frank, Zeng, Changgan

Issue&Volume: 2026-08-19

Abstract: Vacuum fluctuations provide an important new way to control material properties noninvasively1-6. Here, we present experimental evidence that they can enhance superconductivity. NbSe2 is a layered transition-metal dichalcogenide with well-characterized superconducting behavior, providing a clear platform to reveal this effect. We have observed an increase in the critical temperature of superconducting NbSe2 when it is embedded in a split-ring cavity resonator. Near the transition temperature, the critical current and critical field increase dramatically. Our observations are consistent with theoretical calculations showing that hybridization between electronic degrees of freedom and fluctuating cavity modes lowers the energy of the superconducting state. By providing a proof-of-principle demonstration of superconductivity enhancement via vacuum fluctuations, our work establishes a noninvasive technique for controlling the mainstay of quantum technology.

DOI: 10.1038/s41586-026-11037-x

Source: https://www.nature.com/articles/s41586-026-11037-x