Guang-Can Guo

Observing fundamental triple uncertainty relations

Yan Wang, Jie Zhou, Xing-Yan Fan, Ze-Yan Hao et autres

As the fundamental tool in quantum information science, the uncertainty principle is essential for manifesting nonclassical properties of quantum systems. Plenty of efforts on the uncertainty principle with two observables have been achieved, making it an appealing challenge to extend the scenario …

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Integrated continuous-variable quantum light resource for quantum information

Xi‐Feng Ren, Guang-Can Guo

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Polarization-preserving quantum frequency conversion to VIS via cross-band achromatic UV-NIR waveguide coupling

Qingquan Yao, Chenxu Wang, Yuancong Li, Jinming Cui et autres

Experimental Observation of Spin Defects in the van der Waals Material GeS 2

Wei Liu, Song Li, Nai‐Jie Guo, Xiaodong Zeng et autres

Spin defects in atomically thin two-dimensional (2D) materials are promising for quantum applications, particularly quantum sensing. The long coherence times of the spin defects enable high sensitivity in measurements of the fluctuations of the targeted physical parameters. However, the nuclear-spin bath remains …

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Characterizing Topological Phase Transition in Non-Hermitian Systems

ZhaoXiang Fang, Yongxu Fu, Guang-Can Guo, Long Xiong

We propose and present a concept of Topological Distance (TD), obtained from the integration of trace distance over the generalized Brillouin zone, in order to characterize the topological transitions of non-Hermitian systems. Specifically, such a quantity is used to measure the overall …

Hermitian and Non-Hermitian Topological Transitions Characterized by Manifold Distance

ZhaoXiang Fang, Ming Gong, Guang-Can Guo, Yongxu Fu et autres

Topological phases are generally characterized by topological invariants denoted by integer numbers. However, different topological systems often require different topological invariants to measure, and theses definition usually fail at critical points. Therefore, it's challenging to predict what would occur during the transformation …

A fast-tunable and stable fiber microcavity for coupling Ba+ ions in quantum networks

Fang Ding, Chenghao Zhang, Weibin Chen, Jin‐Ming Cui et autres

We present the design, implementation, and characterization of a high-stability, fast-tunable fiber Fabry-Pérot microcavity system optimized for coupling with Ba + ions to form quantum network nodes.The microcavity system integrates multiwavelength single-mode transmission, rapid and broad-band tunability, high finesse, and exceptional passive …

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Dual-driving parametric locking of GHz phonon sources to sub-hertz linewidth in optomechanical systems

Jin-Dao Tang, Xiao-Min Lü, Liping Zeng, P Y Chen et autres

In the exploration of collective dynamics and advanced information processing, synchronization and frequency locking of mechanical oscillations are cornerstone phenomena. Traditional synchronization techniques, which typically involve a single mechanical mode, are limited by their inability to distinguish between intrinsic mechanical oscillations and …

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Distance between two manifolds, topological phase transitions and scaling laws

ZhaoXiang Fang, Ming Gong, Guang-Can Guo, Yongxu Fu et autres

Topological phases are generally characterized by topological invariants denoted by integer numbers. However, different topological systems often require different topological invariants to measure, such as geometric phases, topological orders, winding numbers, etc. Moreover, geometric phases and its associated definitions usually fail at …

Double Resonance Landau-Zener-St\"uckelburg-Majorana Interference in Circuit QED

Mingbo Chen, Bao‐Chuan Wang, Sigmund Kohler, Yuan Kang et autres

We report on Floquet spectroscopy in a cavity-coupled double quantum dot system. By applying microwave induced consecutive passages, we observe Landau-Zener-Stuckelberg-Majorana fringes which are split by holes with the shape of crescents. We demonstrate that these crescents represent a universal feature that …

Data for "Coherent phonon dynamics in spatially-separated graphene mechanical resonators"

Zhuo‐Zhi Zhang, Xiang‐Xiang Song, Gang Luo, Zi-Jia Su et autres

Data for "Coherent phonon dynamics in spatially-separated graphene mechanical resonators"

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Data for "Coherent phonon dynamics in spatially-separated graphene mechanical resonators"

Zhuo‐Zhi Zhang, Xiang‐Xiang Song, Gang Luo, Zi-Jia Su et autres

Data for "Coherent phonon dynamics in spatially-separated graphene mechanical resonators"

cn, us (code pays fourni par la source)