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10-17
2025
Monitoring the energy of a cavity by observing the emission of a repeatedly excited qubit
演讲人： Benjamin Huard [Ecole Normale Supérieure de Lyon]时间：10:00-11:30, Oct 17, 2025 (Fri)地点：RM S527, MMW Building内容：Is it possible to count the number of photons in a microwave cavity by exploiting the dispersive interaction between a superconducting qubit and the cavity? In standard protocols, this operation requires to perform a series of gates on the qubit that are conditioned on...
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09-17
2025
Genuine quantum scars in many-body spin systems
演讲人： Andrea Pizzi [Trinity College, Cambridge] 时间： 10:00-11:00, Sep 17, 2025 (Wed)地点：RM 1-222, FIT Building内容：Chaos makes isolated systems of many interacting particles quickly thermalize and forget their past. While this picture applies to simple observables such as order parameters and correlators, it need not extend to more complex quantities like wavefunction amplitudes, that a...
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09-12
2025
General Approach to Error Detection of Bosonic Codes via Phase Estimation
演讲人： 金缘德 [中国科学院半导体研究所/中国科学院大学]时间： 10:00-11:30, Sep 12, 2025 (Fri)地点：RM S527, MMW Building内容：Quantum phase estimation (QPE) is an important algorithm in quantum information processing, designed to estimate the eigenvalues of a unitary operator, and it plays a significant role in quantum metrology. In our previous work [1], we have established a general framework...
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09-11
2025
Quantum information in precision measurements using spin squeezing and light squeezing
演讲人： 肖艳红 [复旦大学]时间： 16:30-18:00, Sep 11, 2025 (Thu)地点： RM 1-222, FIT Building内容：Physical systems based on coherent atom-light interactions are important for precision measurements and sensing. The measurement sensitivities of classical systems are fundamentally limited by spin projection noise and photon shot noise, hence employing quantum entanglement and squeezed states to...
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09-08
2025
Unbounded Sharing of Nonlocality Using Qubit Projective Measurements
演讲人： Souradeep Sasmal [University of Electronic Science and Technology of China]时间： 15:00-17:00, Sep 8, 2025 (Mon)地点： RM S327, MMW Building (#腾讯会议：435-802-209)内容：The prevailing consensus is that the sequential sharing of nonlocality in a Bell experiment requires generalised unsharp measurements, since a sharp measurement inevitably destroys the entanglement of the shared state...
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07-25
2025
量子电池容量理论及其应用
演讲人： 杨雪 [西南交通大学]时间： 10:00-11:00, Jul 25, 2025 (Fri)地点：RM S527, MMW Building内容：随着量子技术的发展，以可控方式存储和释放能量的量子设备（即量子电池）的理论和实验研究越来越重要。与传统的经典电池相比，量子电池具备更为快速且更高功率的充电性能，这一特性使其有望在降低人类对化石燃料的依赖、减少碳排放方面发挥重要作用。量子电池研究的一个核心问题是能量转换，此前的研究表明量子电池的能量...