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Displaying records 31 to 40 of 49 records.
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31. Observation of Collective Atomic Recoil Motion in a Degenerate Fermion Gas
Published: 5/23/2011
Authors: Lu Deng, Edward W Hagley
Abstract: We demonstrate collective atomic recoil motion with a dilute, ultracold, degenerate fermion gas in a single spin state. By utilizing an adiabatically decompressed magnetic trap with an aspect ratio different from that of the initial trap, a mom ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=920362

32. Observation of the red-blue detuning asymmetry in matter-wave superradiance
Published: 11/23/2010
Authors: Lu Deng, Edward W Hagley, Qiang Cao, Xiaorui Wang, Xinyu Luo, Ruquan Wang, Fan Yang, Xiaoji Zhou, Xuzong Chen, M. G. Payne, Mingsheng Zhan
Abstract: We show the first experimental observations of matter-wave superradiance using blue-detuned light, and demonstrate a pump-laser detuning asymmetry in the collective atomic recoil motion. In contrast to all previous theoretical treatments, which p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905929

33. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914411

34. Optical group velocity reduction in sodium without electromagnetically induced transparency
Published: 1/1/2002
Authors: Lu Deng, Edward W Hagley, M M Kozuma, M G Payne
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101500

35. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912908

36. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914919

37. Propagation Dynamics of a Temporally, Amplitude- and Group-Velocity-Matched Two-Mode Ultraslow Wave in a Three-Level Lamda System
Published: 12/1/2004
Authors: Lu Deng, M Payne, Edward W Hagley
Abstract: We investigate the propagation dynamics of a two-mode probe field traveling with ultra-slow group velocities. We show that a strong cross-beam coupling occurs between the two modes of the probe wave. In the adiabatic limit and under appropriate con ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840172

38. Quantum Key Distribution With 1.25 Gbps Clock Synchronization
Published: 5/1/2004
Authors: Joshua C Bienfang, Alex J Gross, Alan Mink, Barry J. Hershman, Anastase Nakassis, Xiao Tang, David H Su, Charles W Clark, Carl J Williams, Edward W Hagley, J Wen, R Lu
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840186

39. Quantum key distribution with 1.25 Gbps clock synchronization
Published: 1/1/2004
Authors: Joshua C Bienfang, Alex J Gross, A Mink, B J Hershman, A Nakassis, X Tang, R Lu, D R Su, Charles W Clark, Carl J Williams, Edward W Hagley, J Wen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101448

40. Reply to ,Comment on ,Electromagnetic Wave Dynamics in Matter-Wave Superradiant ScatteringŠ by Wolfgang Ketterle
Published: 3/18/2011
Authors: Lu Deng, Edward W Hagley, Marvin G. Payne
Abstract: The comment by W. Ketterle [1] purports having a viable model of superradiance. However, Ref. [1] admits not being able to explain the red/blue pump detuning asymmetry in matter-wave superradiance that was first observed recently by us [2]. It is cle ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906633



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