Showing quant-phShow all
2 papers · 1 filter
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…