51 citations · 157 across the 9 of their papers we have counts for
10 papers
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…
Nonclassical Light from Exciton Interactions in a Two-Dimensional Quantum Mirror
Valentin Walther, Lida Zhang, Susanne F. Yelin +1
Excitons in a semiconductor monolayer form a collective resonance that can reflect resonant light with extraordinarily high efficiency. Here, we investigate the nonlinear optical p…
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…
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…
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…
Nonlocal nonlinear response of thermal Rydberg atoms and modulational instability in absorptive nonlinear media
Lida Zhang, Jörg Evers
Nonlinear and nonlocal effects are discussed in the interaction of laser fields with thermal Rydberg atoms in electromagnetically induced transparency configuration. We show that u…
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…