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  1. Article

    Open Access

    Single ion qubit with estimated coherence time exceeding one hour

    Realizing a long coherence time quantum memory is a major challenge of current quantum technology. Until now, the longest coherence-time of a single qubit was reported as 660 s in a single 171Yb+ ion-qubit throug...

    Pengfei Wang, Chun-Yang Luan, Mu Qiao, Mark Um, Junhua Zhang… in Nature Communications (2021)

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  2. Article

    Open Access

    Correction: Corrigendum: Experimental Certification of Random Numbers via Quantum Contextuality

    Scientific Reports 3: Article number: 1627; published online: 09 April 2013; updated: 02 February 2018. The original version of this Article contained an error in the spelling of the author Yangchao Shen, whic...

    Mark Um, **ang Zhang, Junhua Zhang, Ye Wang, Yangchao Shen… in Scientific Reports (2018)

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  3. Article

    Open Access

    Phonon arithmetic in a trapped ion system

    Single-quantum level operations are important tools to manipulate a quantum state. Annihilation or creation of single particles translates a quantum state to another by adding or subtracting a particle, depend...

    Mark Um, Junhua Zhang, Dingshun Lv, Yao Lu, Shuoming An… in Nature Communications (2016)

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  4. Article

    Open Access

    Experimental Certification of Random Numbers via Quantum Contextuality

    The intrinsic unpredictability of measurements in quantum mechanics can be used to produce genuine randomness. Here, we demonstrate a random number generator where the randomness is certified by quantum contex...

    Mark Um, **ang Zhang, Junhua Zhang, Ye Wang, Shen Yangchao… in Scientific Reports (2013)

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