51 citations · 157 across the 9 of their papers we have counts for
7 papers · 1 filter
Quantum nonlinear metasurfaces from dual arrays of ultracold atoms
Simon Panyella Pedersen, Lida Zhang, Thomas Pohl
Atoms in a sub-wavelength lattices have remarkable optical properties that have become of high scientific and technological significance. Here, we show how the coupling of light to…
Photon-photon interactions in Rydberg-atom arrays
Lida Zhang, Valentin Walther, Klaus Mølmer +1
We investigate the interaction of weak light fields with two-dimensional lattices of atoms, in which two-photon coupling establishes conditions of electromagnetically induced trans…
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…
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…
Violating the no-signaling principle with classical inseparable beams in an optical parity-time symmetric system
Lida Zhang, Jörg Evers
We show that the no-signaling principle can be violated with classical inseparable beams in the presence of a parity-time (PT) symmetric subsystem. Thus, the problems associated to…
Controllable linear -phase modulation in a thermal atom vapor without diffraction or absorption
Lida Zhang, Jörg Evers
A scheme is proposed to achieve substantial controllable phase modulation for a probe field propagating through a thermal atomic vapor in double- configuration. The phase modula…
Optical cloning of arbitrary images beyond the diffraction limits
O. N. Verma, L. Zhang, J. Evers +1
Cloning of arbitrary images encoded onto the spatial profile of a laser beam onto that of a second beam is theoretically investigated. The two fields couple to an atomic lambda sys…