5 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…
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…