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1. A Dynamic, Ultra-Slow Optical-Matter Wave Analog of Event Horizon
C. J. Zhu, Lu Deng, Edward W Hagley, Mo-Lin Ge
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 ...
2. A Fast-Responding Nonlinear Phase Shifter Using an Active Raman Gain Core
Lu Deng, Edward W Hagley, Kaijun Jiang, M Payne
Using a lifetime broadened N-scheme with an active-Raman-gain (ARG) Lambda core, we show that large nonlinear phase shift can be induced without signal wave attenuation. The new scheme is not based on the ultra-slow-wave technique and it does not ex ...
3. A Green Laser Pointer Hazard
Technical Note (NIST TN)
Jemellie Galang, Alessandro Restelli, Edward W Hagley, Charles W Clark
An inexpensive green laser pointer was found to emit 20 mW of infrared radiation during normal use. This is potentially a serious hazard that would not be noticed by most users of such pointers. We find that the problem derives from an unsafe desig ...
4. A High Speed Quantum Communication Testbed
Carl J Williams, X Tang, M Hiekkero, J Rouzaud, R Lu, A Goedecke, Alan L Migdall, A Mink, A Nakassis, Leticia S Pibida, J Wen, Edward W Hagley, Charles W Clark
5. A Well Collimated Quasi-Continuous Atom Laser
Edward W Hagley, Lu Deng, M M Kozuma, J Wen, Kristian Helmerson, S L. Rolston, William D Phillips
We demonstrate extraction of sodium atoms from a trapped Bose-Einstein condensate (BEC) using a coherent stimulated Raman process. Optical Raman pulses drive transitions between trapped and untrapped magnetic sublevels so as to give the output coupl ...
6. Coherence Properties of an Atom Laser
M Trippenbach, Y B Band, M Edwards, M R Doery, Paul S Julienne, Edward W Hagley, Lu Deng, M M Kozuma, Kristian Helmerson, S L. Rolston, William D Phillips
We study the coherence properties of an atom laser, which operates by extracting atoms from a gaseous Bose-Einstein condensate via a two-photon Raman process, by analyzing a recent experiment [(Hagley et al., submitted to Phys. Rev. Lett. (1999)]. W ...
7. Coherent Splitting of Bose-Einstein Condensed Atoms With Optically Induced Bragg Diffraction
M M Kozuma, Lu Deng, Edward W Hagley, J Wen, R Lutwak, Kristian Helmerson, S L. Rolston, William D Phillips
We exposed Bose-Einstein condensed sodium atoms to a traveling periodic optical potential and observed coherent splitting of the condensate due to Bragg diffraction. Using the momentum selectivity of the scattering, we were able to separate a compon ...
8. Effect of atomic coherence on "temporal cloaking" in atomic vapors
Runbing Li, Lu Deng, Edward W Hagley, Joshua C Bienfang, M G Payne, Mo-Lin Ge
We discuss a different scheme to achieve ,temporal cloakingŠ in atomic vapors. Instead of creating
a ,temporal-spatialŠ window in a patched broadband short optical pulse using static differential
dispersion of an optical fiber, we create a ,tempora ...
9. Efficient multi-wave mixing in ultra slow propagation regime and the role of multi-photon quantum destructive interference,
Y Wu, M G Payne, Edward W Hagley, Lu Deng
10. Fast, All-Optical, Zero to PI Continuously Controllable Kerr Phase Gate
Runbing Li, Lu Deng, Edward W Hagley
We demonstrate a fast-responding Kerr phase gate using a room-temperature 85Rb vapor operated
in a Raman gain scheme where the probe/signal wave travels ,superluminallyŠ. Continuously
controllable nonlinear Kerr phase shift of the probe wave from 0 ...