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13 papers · 2 filters
Entanglement and dynamical phase transition in a spin-orbit-coupled Bose-Einstein condensate
F. X. Sun, W. Zhang, Q. Y. He +1
Characterizing quantum phase transitions through quantum correlations has been deeply developed for a long time, while the connections between dynamical phase transitions (DPTs) an…
Experimental generation of tripartite polarization entangled states of bright optical beams
Liang Wu, Zhihui Yan, Yanhong Liu +4
The multipartite polarization entangled states of bright optical beams directly associating with the spin states of atomic ensembles are one of the essential resources in the futur…
Generating quantum correlated twin beams by four-wave mixing in hot cesium vapor
Rong Ma, Wei Liu, Zhongzhong Qin +2
Using a nondegenerate four-wave mixing process based on a double- scheme in hot cesium vapor, we generate quantum correlated twin beams with a maximum intensity-difference squee…
Strong Coherent Light Amplification with Double Electromagnetically Induced Transparency Coherences
Dan Wang, Chao Liu, Changshun Xiao +5
We experimentally demonstrate coherent amplification of probe field in a tripod-type atoms driven by strong coupling, signal and weak probe fields. We suppress linear and nonlinear…
Enhanced sensitivity of low-frequency signal by using broad squeezed light and bichromatic local oscillator
Wei Li, Yuanbin Jin, Xudong Yu +1
We experimentally study a protocol of using the broadband high frequency squeezed vacuum to detect the low-frequency signal. In this scheme, the lower sideband field of the squeeze…
Investigating Einstein-Podolsky-Rosen steering of continuous variable bipartite states by non-Gaussian pseudospin measurements
Yu Xiang, Buqing Xu, Ladislav Mišta +3
EPR steering is an asymmetric form of correlations which is intermediate between quantum entanglement and Bell nonlocality, and can be exploited for quantum communication with one…