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Search Publications by: Edward Hagley (Fed)

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Displaying 1 - 25 of 61

Symmetry-breaking inelastic wave-mixing atomic magnetometry

December 1, 2017
Author(s)
Feng Zhou, Edward W. Hagley, Lu Deng, Chengjie Zhu
The nonlinear magneto-optical rotation (NMOR) effect has prolific applications ranging from precision mapping of Earth's magnetic field to biomagnetic sensing. Studies on collisional spin relaxation effects have led to ultrahigh magnetic field

Dynamic Onset of Feynman Relation in the Phonon Regime

May 9, 2016
Author(s)
Lu Deng, Edward W. Hagley, Yan Li, Chengjie Zhu
The Feynman relation 1, a much celebrated condensed matter physics gemstone for more than 70 years, predicts that the density excitation spectrum and structure factor of a condensed Bosonic system in the phonon regime drops linear and continuously to zero

High-Fidelity, Weak-Light Polarization Gate Using Room-Temperature Atomic Vapor

March 18, 2015
Author(s)
Lu Deng, Edward W. Hagley, Runbing Li, Chengjie Zhu
Using a polarization-selective-Kerr-phase-shift technique we demonstrate a fast, all-optical, high-fidelity polarization gate in a room-temperature atomic medium. By writing a pi-phase shift to one selected circularly-polarized component of a linearly

Light-wave mixing and scattering with quantum gases

March 18, 2015
Author(s)
Lu Deng, Edward W. Hagley, C.J. Zhu
We show that optical processes originating from elementary excitations with dominant collective atomic recoil motion in a quantum gas can profoundly change many nonlinear optical processes routinely observed in a normal gas. Not only multi-photon wave

High-Fidelity, Weak-Light Polarization Gate Using Room-Temperature Atomic Vapor

October 23, 2014
Author(s)
Lu Deng, Runbing Li, Chengjie Zhu, Edward W. Hagley
Using a polarization-selective-Kerr-phase-shift technique we demonstrate an all-optical polarization gate in an atomic gain medium with the control-field intensity equivalent to 20 photons of 10 nanoseconds propagating in a 5 μm mode diameter photonic

Dynamic, Ultra-Slow Optical-Matter Wave Analog of an Event Horizon

August 28, 2014
Author(s)
C. J. Zhu, Lu Deng, Edward W. Hagley, Mo-Lin Ge
We investigate theoretically the effects of a dynamically increasing medium index on optical- wave propagation in a rubidium condensate. A long pulsed pump laser coupling a D2 line transition produces a rapidly growing internally generated field. This

Optical self-focusing effect in coherent light scattering with condensates

March 3, 2014
Author(s)
Lu Deng, Edward W. Hagley, C.J. Zhu, G.X. Huang
We present a theoretical investigation of optical self-focusing effects in light scattering with condensates. Using long (>200 μs), red-detuned pulses we show numerically that a nonnegligible self-focusing effect is present that causes rapid optical beam

Suppression of Directional Light-Wave Mixing in Normal and Quantum Gases

October 30, 2013
Author(s)
Lu Deng, Chengjie Zhu, Edward W. Hagley, W R. Garrett
We discuss nonlinear optical processes in the presence of quantum gases. We show that in contrast to a normal gas where the medium “passively” participates in nonlinear optical processes, quantum gases “actively” interact with the wave mixing process by

Hybrid quantum-well system for wavelength-channel selection

June 28, 2013
Author(s)
Lu Deng, Edward W. Hagley, Chengjie Zhu
We consider a hybrid quantum-well structure consisting of regions whose properties alternate between active Raman gain and electromagnetically induced transparency. We present both analytical and numerical results that indicate a large light beam defection

Light-Wave Mixing and Scattering with Quantum Gases

May 21, 2013
Author(s)
Lu Deng, Chengjie Zhu, Edward W. Hagley
We present a general theoretical framework on light-wave mixing and scattering in quantum gases. We show that all such processes that originate from elementary excitations are stimulated Raman or hyper-Raman in nature. In the forward direction, the third

Light-Wave Mixing with Quantum Gases

May 1, 2013
Author(s)
Lu Deng, Edward W. Hagley, R Q. Wang, Charles W. Clark
Nonlinear optics has come a long way since the laser. This article reviews recent progress in coherent light-matter wave mixing and introduces some new concepts that will reframe future research directions.