http://lqcc.ustc.edu.cn/iontrap/Thu, 25 Dec 2025 10:00:00 +0800http://lqcc.ustc.edu.cn/iontrap/transverse-polarization-gradient-entangling-gates-trapped-ion.html<p>Our work “Transverse Polarization Gradient Entangling Gates for Trapped-Ion Quantum Computation” has been published in <strong>Physical Review Letters</strong> as an <strong>Editors’ Suggestion</strong> on December 24, 2025.</p> <p>We realized high-fidelity entangling gates for trapped ions based on the polarization gradient of tightly focused light. This scheme simplifies the current entangling gate …</p>qngThu, 25 Dec 2025 10:00:00 +0800tag:lqcc.ustc.edu.cn,2025-12-25:/iontrap/transverse-polarization-gradient-entangling-gates-trapped-ion.htmlNewshttp://lqcc.ustc.edu.cn/iontrap/neural-network-assisted-yb-quantum-magnetometer.html<p>Our work “A neural network assisted ¹⁷¹Yb⁺ quantum magnetometer” has been published in <strong>npj Quantum Information</strong>. We demonstrate the power of combining machine learning with quantum sensing by integrating neural networks into the data processing stage of a trapped-ion magnetometer, significantly extending its operational regime.</p> <h3 id="the-challenge">The Challenge</h3> <p>A versatile …</p>qngThu, 22 Dec 2022 10:00:00 +0800tag:lqcc.ustc.edu.cn,2022-12-22:/iontrap/neural-network-assisted-yb-quantum-magnetometer.htmlNewshttp://lqcc.ustc.edu.cn/iontrap/super-resolved-imaging-single-cold-atom-nanosecond.html<p>Our work “Super-resolved Imaging of a Single Cold Atom on a Nanosecond Timescale” has been published in <strong>Physical Review Letters</strong>. We demonstrate a groundbreaking method to image a single trapped ion with unprecedented spatial and temporal resolution, breaking through the optical diffraction limit.</p> <h3 id="breaking-the-diffraction-limit">Breaking the Diffraction Limit</h3> <p>High-resolution optical detection …</p>qngFri, 24 Dec 2021 10:00:00 +0800tag:lqcc.ustc.edu.cn,2021-12-24:/iontrap/super-resolved-imaging-single-cold-atom-nanosecond.htmlNewshttp://lqcc.ustc.edu.cn/iontrap/riemann-zeros-floquet-engineering-trapped-ion.html<p>Our work “Riemann zeros from Floquet engineering a trapped-ion qubit” was published in <strong>npj Quantum Information</strong> on July 14, 2021. This work bridges quantum physics and number theory by experimentally measuring the zeros of the Riemann zeta function using a trapped-ion quantum system.</p> <h3 id="background">Background</h3> <p>The Riemann Hypothesis, proposed by Bernhard …</p>qngThu, 01 Jul 2021 10:00:00 +0800tag:lqcc.ustc.edu.cn,2021-07-01:/iontrap/riemann-zeros-floquet-engineering-trapped-ion.htmlNewshttp://lqcc.ustc.edu.cn/iontrap/quantum-thermodynamics-adiabatic-open-systems-trapped-ion.html<p>Our work “Quantum thermodynamics in adiabatic open systems and its trapped-ion experimental realization” has been published in <strong>npj Quantum Information</strong>. In collaboration with our Brazilian colleagues, we established general formulas for quantum thermodynamics in adiabatic open systems, bridging quantum adiabatic processes and thermodynamic adiabatic processes, and verified our theory experimentally …</p>qngFri, 18 Sep 2020 10:00:00 +0800tag:lqcc.ustc.edu.cn,2020-09-18:/iontrap/quantum-thermodynamics-adiabatic-open-systems-trapped-ion.htmlNewshttp://lqcc.ustc.edu.cn/iontrap/experimentally-testing-quantum-critical-dynamics-beyond-kibble-zurek.html<p>Our work “Experimentally testing quantum critical dynamics beyond the Kibble-Zurek mechanism” has been published in <strong>Communications Physics</strong> (Nature). Building on our earlier Kibble-Zurek experiment, we go beyond the standard KZM to probe the <strong>full probability distribution</strong> of topological defects formed during a quantum phase transition.</p> <h3 id="beyond-the-mean-full-counting-statistics">Beyond the Mean: Full Counting …</h3>qngFri, 14 Feb 2020 10:00:00 +0800tag:lqcc.ustc.edu.cn,2020-02-14:/iontrap/experimentally-testing-quantum-critical-dynamics-beyond-kibble-zurek.htmlNewshttp://lqcc.ustc.edu.cn/iontrap/experimental-demonstration-suppressing-residual-geometric-dephasing.html<p>Our work “Experimental demonstration of suppressing residual geometric dephasing” has been published in <strong>Science Bulletin</strong>. We experimentally demonstrate effective suppression of residual geometric dephasing — a key obstacle for high-fidelity geometric quantum gates — using modified dynamical decoupling schemes on a single trapped ¹⁷¹Yb⁺ ion.</p> <h3 id="the-problem-residual-geometric-dephasing">The Problem: Residual Geometric Dephasing</h3> <p>The …</p>qngFri, 20 Sep 2019 10:00:00 +0800tag:lqcc.ustc.edu.cn,2019-09-20:/iontrap/experimental-demonstration-suppressing-residual-geometric-dephasing.htmlNewshttp://lqcc.ustc.edu.cn/iontrap/an-ultraviolet-fiber-fabry-perot-cavity-for-florescence-collection-of-trapped-ions-is-published.html<p>Our work “An Ultraviolet Fiber Fabry–Pérot Cavity for Florescence Collection of Trapped Ions” has been published in <strong>Chinese Physics Letters</strong>. We demonstrate a fiber Fabry–Pérot cavity (FFPC) operating in the ultraviolet range at 369 nm, specifically designed for enhancing fluorescence collection from trapped ¹⁷¹Yb⁺ ions — a key …</p>qngSun, 22 Jan 2017 10:20:00 +0800tag:lqcc.ustc.edu.cn,2017-01-22:/iontrap/an-ultraviolet-fiber-fabry-perot-cavity-for-florescence-collection-of-trapped-ions-is-published.htmlNewshttp://lqcc.ustc.edu.cn/iontrap/experimental-trapped-ion-quantum-simulation-of-the-kibble-zurek-dynamics-in-momentum-space-is-published.html<p>Our work <em>Experimental Trapped-ion Quantum Simulation of the Kibble-Zurek dynamics in momentum space</em> was published in <strong>Scientific Reports</strong>. This was our group’s first trapped-ion experiment, following the development of the platform that began in 2013. We thank our collaborators Le Luo and Adolfo del Campo for their contributions to …</p>qngThu, 22 Sep 2016 10:20:00 +0800tag:lqcc.ustc.edu.cn,2016-09-22:/iontrap/experimental-trapped-ion-quantum-simulation-of-the-kibble-zurek-dynamics-in-momentum-space-is-published.htmlNews