activity
20152025
most citedMeasurements with prediction and retrodiction on the collective spin of 10^{11} atoms beat the standard quantum limit

168 citations · 240 across the 6 of their papers we have counts for

collaborators

6 papers

quant-ph2025

Chirality-induced quantum nonreciprocity

Zimo Zhang, Zhongxiao Xu, Ran Huang +10

Chirality, nonreciprocity, and quantum correlations are at the center of a wide range of intriguing effects and applications across natural sciences and emerging quantum technologi…

quant-ph2023★ 11 cited

Concurrent spin squeezing and light squeezing in an atomic ensemble

Shenchao Jin, Junlei Duan, Youwei Zhang +7

Squeezed spin states and squeezed light are both key resources for quantum metrology and quantum information science, but have been separately investigated in experiments so far. S…

quant-ph2020★ 26 cited

Retrodiction beyond the Heisenberg uncertainty relation

Han Bao, Shenchao Jin, Junlei Duan +4

In quantum mechanics, the Heisenberg uncertainty relation presents an ultimate limit to the precision by which one can predict the outcome of position and momentum measurements on…

quant-ph2018

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…

quant-ph2018★ 168 cited

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…

quant-ph2015★ 35 cited

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…