6 papers
High-bandwidth Coherence Cloning using Optical-Phase-Locking Feedforward
Chen Jia, Zhen-Xing Hua, Yu-Xin Chao +1
Ultra-narrow-linewidth lasers with suppressed high-frequency phase noise are critical for quantum control and precision metrology. While optical phase locking (OPL) is the standard…
Probing False Vacuum Decay and Bubble Nucleation in a Rydberg Atom Array
Yu-Xin Chao, Peiyun Ge, Zhen-Xing Hua +7
In quantum field theory (QFT), the "vacuum" is not just empty space but the lowest-energy state of a quantum field. If the energy landscape has multiple local minima, the local gro…
Observation of average topological phase in disordered Rydberg atom array
Zongpei Yue, Yu-Feng Mao, Xinhui Liang +8
Topological phases have been extensively studied over the past two decades, primarily in quantum pure states, where they are protected by exact symmetries. Recently, numerous studi…
Observation of anomalous information scrambling in a Rydberg atom array
Xinhui Liang, Zongpei Yue, Yu-Xin Chao +4
Quantum information scrambling, which describes the propagation and effective loss of localinformation, is crucial for understanding the dynamics of quantum many-body systems. We r…
Feedforward Cancellation of High-Frequency Phase Noise in Frequency-Doubled Lasers
Zhen-Xing Hua, Yu-Xin Chao, Chen Jia +3
The cancellation of high-frequency laser phase noise using feedforward techniques, as opposed to feedback methods, has achieved significant advancements in recent years. However, d…
Robust High-frequency Laser Phase Noise Suppression by Adaptive Pound-Drever-Hall Feedforward
Yu-Xin Chao, Zhen-Xing Hua, Xin-Hui Liang +4
Suppressing high-frequency laser phase noise, particularly at frequencies near and beyond typical feedback bandwidths of a few MHz, is a critical yet challenging task in many advan…