3 papers
physics.optics2020
Non-invasive imaging of object behind strongly scattering media via cross-spectrum
Xingchen Zhao, Tao Peng, Zhenhuan Yi +4
We develop a method based on the cross-spectrum of an intensity-modulated CW laser, which can extract a signal from an extremely noisy environment and image objects hidden in turbi…
quant-ph2018
Beam focusing and reduction of quantum uncertainty in width at the few-photon level via multi-spatial-mode squeezing
Lida Zhang, G. S. Argarwal, M. O. Scully
We show for the first time that it is possible to realize laser beam focusing at the few-photon level in the four-wave-mixing process, and at the same time, reducing the quantum un…
quant-ph2017
Hidden PT Symmetry and quantization of coupled-oscillators model of QASER
Lida Zhang, G. S. Agarwal, W. P. Schleich +1
Using Maxwell-Bloch equations it has been shown how the superradiance can lead to amplification and gain at a frequency much larger than the pumping frequency. This remarkable effe…