168 citations · 213 across the 5 of their papers we have counts for
5 papers
Entangling and squeezing atoms by weak measurement
Mingfeng Wang, Weizhi Qu, Han Bao +2
A weak measurement approach is proposed to entangle and squeeze atoms. We show that even for very small coupling strength between light and atoms, one can achieve large squeezing u…
Measurements with prediction and retrodiction on the collective spin of 10^{11} atoms beat the standard quantum limit
Han Bao, Junlei Duan, Xingda Lu +10
Quantum probes using uncorrelated particles give a limit on the measurement sensitivity referred to as the standard quantum limit (SQL). The SQL, however, can be overcome by ex…
Two-axis-twisting spin squeezing by multi-pass quantum erasure
Mingfeng Wang, Weizhi Qu, Pengxiong Li +3
Many-body entangled states are key elements in quantum information science and quantum metrology. One important problem in establishing a high degree of many-body entanglement usin…
Transition linewidth of cross-correlations in random intensity fluctuations in EIT
Lei Feng, Pengxiong Li, Mengzhen Zhang +2
It is known that cross-correlation between the random intensity fluctuations of two lasers forming electromagnetically-induced transparency (EIT) exhibits a transition from correla…
Coherence assisted resonance with sub-lifetime-limited linewidth
Feng Lei, Pengxiong Li, Liang Jiang +2
We demonstrate a novel approach to obtain resonance linewidth below that limited by coherence lifetime. Cross correlation between induced intensity modulation of two lasers couplin…