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You searched on: Author: Edward Hagley

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1. Zero to pi continuously controllable cross-phase modulation in a Doppler-broadened N-type electromagnetically-induced-transparency medium
Published: 10/29/2015
Authors: Lu Deng, Edward W Hagley, R B Li, C J Zhu
Abstract: We demonstrate an observation of zero to π continuously controllable cross-phase- modulation based on an N-type electromagnetically-induced-transparency scheme in a room-temperature 87Rb vapor. We theoretically and experimentally show tha ...

2. Versatile, dynamically balanced low-noise optical-field manipulator using a coherently prepared atomic beam
Published: 10/19/2015
Authors: Lu Deng, Edward W Hagley, Yan Li, Chengjie Zhu, W R Garrett
Abstract: We propose a versatile dynamic optical-field manipulator using a coherently prepared atomic medium. We show that by locking the pump power change with the two-photon detuning a pi phase shifting can be realized with unit probe fidelity in a broa ...

3. Polarization-selective Kerr-phase-shift method for fast, all-optical polarization switching in a cold atomic medium
Published: 12/30/2014
Authors: C. J. Zhu, Lu Deng, Edward W Hagley
Abstract: We propose a photonic CNOT gate and a polarization gate using a polarization-selective- kerrphase- shift scheme. Using the demonstrated continuous Kerr phase shifting technique we selectively write a π phase shift to one of the circularly pol ...

4. High-Fidelity, Weak Light Level Controlled-NOT Gate for Quantum Information Systems
Published: 10/21/2014
Authors: Runbing Li, Chengjie Zhu, Lu Deng, Edward W Hagley
Abstract: Efficient qubit protocols are critically important to quantum information processing, and the ability to manipulate the quantum state of light with the quantum state of another light field is the ultimate enabler of quantum computers 1−7. To th ...

5. A Dynamic, Ultra-Slow Optical-Matter Wave Analog of Event Horizon
Published: 8/28/2014
Authors: C. J. Zhu, Lu Deng, Edward W Hagley, Mo-Lin Ge
Abstract: We investigate effects of a dynamically increasing medium index to optical-wave propagation in a rubidium condensate. A long pulsed pump lasaer coupling a D2 line transition produces a rapidly-growing internally-generated field. This results in a s ...

6. High-Fidelity, Weak-Light Polarization Gate Using Room-Temperature Atomic Vapor
Published: 6/8/2014
Authors: Lu Deng, Runbing Li, Chengjie Zhu, Edward W Hagley
Abstract: 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 diamete ...

7. Highly efficient, broadband coherent surface-mixing-wave generation using amplified surface plasmonic polaritons
Published: 5/21/2014
Authors: C. J. Zhu, X Zhao, Guoxiang Huang, Lu Deng, Edward W Hagley, Yan Ren
Abstract: We show that coherent broadband surface mixing-wave (SMW) by a hyper-Raman process can be efficiently generated near a metallic surface abutting a quasi-three-level gain medium. The generation process is significantly enhanced by the amplified surf ...

8. Optical self-focusing effect in coherent light scattering with condensates
Published: 3/3/2014
Authors: Lu Deng, Edward W Hagley, C.J. Zhu, G.X. Huang
Abstract: 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 ...

9. Suppression of Directional Light-Wave Mixing in Normal and Quantum Gases
Published: 10/30/2013
Authors: Lu Deng, Chengjie Zhu, Edward W Hagley, W R Garrett
Abstract: We discuss nonlinear optical processes in the presence of quantum gases. We show that in contrast to a normal gas where the medium ,passivelyŠ participates in nonlinear optical processes, quantum gases ,activelyŠ interact with the wave mixing proce ...

10. Optical cloaking using alternate Raman gain and free-space media in the presence of spatially distributed pump fields
Published: 10/22/2013
Authors: Chengjie Zhu, Lu Deng, Edward W Hagley, Mo-Lin Ge
Abstract: We discuss an optical ,cloakingŠ scheme using three-level active Raman gain media in tandem in the presence of a spatially distributed pump field. Using eikonal approximation we first derive analytically the deflection angle and show that the t ...

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