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09-21
2023
Characterizing the ultimate potential and limitations of quantum error mitigation
内容： The inevitable accumulation of errors in near-future quantum devices represents a key obstacle in delivering practical quantum advantages, motivating the development of various quantum error-mi...
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04-28
2023
A universal theory of spin squeezing and the experimental realization
内容： Quantum metrology makes use of many-body entangled states to perform measurements with greater precision than would be possible using only classically correlated particles. Discerning states su...
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09-11
2023
Two-dimensional trapped ion crystals, micromotion and qubit state detection
内容： To study potential avenues for scaling up trapped ion crystal size, we built a modified Paul trap with an oblate aspect ratio designed for trapping radial 2-d ion crystals. In this geometry, th...
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10-19
2023
Quantum simulations on an analog-digital trapped-ion quantum system
内容： Our quantum experiment consists of a chain of 171Yb+ ions with individual Raman beam addressing and individual readout. This fully connected system can be configured to run any sequence of sing...
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12-15
2022
New Physics of Spontaneous Symmetry Breaking in the Early Universe
内容： A strong first-order electroweak phase transition provides a possible mechanism to generate baryon asymmetry in the early universe, and it may impact on the thermal environment of dark matter f...
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02-23
2023
From the breakdown of topological quantum memory to mixed-state topological order
内容： Topological quantum memory can protect information against local errors up to finite error thresholds. Such thresholds are usually determined via the decoding algorithms rather than the intrins...