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5 papers · 2 filters
Parameter trajectory engineering for state transfer and quantum sensing in non-Hermitian two-level systems
Qi-Cheng Wu, Yan-Hui Zhou, Biao-liang Ye +4
Exceptional points (EPs) in non-Hermitian systems give rise to enhanced sensitivity and chiral state transfer, which are important for quantum technologies. Although parameter traj…
Quantum criticality in sub-Ohmic systems with three competing terms: beyond conventional spin-boson physics
Nengji Zhou, Yulong Shen, Zhe Sun
Quantum phase transitions (QPTs) in the spin-boson model with/without the rotating-wave approximation (RWA) are systematically investigated through variational calculations using a…
Experimental certification of ensembles of high-dimensional quantum states with independent quantum devices
Yong-Nan Sun, Meng-Yun Ma, Qi-Ping Su +3
When increasing the dimensionality of quantum systems, high-dimensional quantum state certification becomes important in quantum information science and technology. However, how to…
Extending Qubit Coherence Time via Hybrid Dynamical Decoupling
Qi Yao, Jun Zhang, Wenxian Zhang +1
Dynamical decoupling (DD) and bath engineering are two parallel techniques employed to mitigate qubit decoherence resulting from their unavoidable coupling to the environment. Here…
Demonstration of Discrete-Time Quantum Walks and Observation of Topological Edge States in a Superconducting Qutrit Chain
Kun Zhou, Jian-Wen Xu, Qi-Ping Su +12
Quantum walk serves as a versatile tool for universal quantum computing and algorithmic research. However, the implementation of discrete-time quantum walks (DTQWs) with supercondu…