Alexander S. Zibrov

Publications (6)10.46 Total impact

• Source

  Available from: Daniel J. Twitchen

  Article: Quantum interference of single photons from remote nitrogen-vacancy centers in diamond

  Alp Sipahigil, Michael L. Goldman, Emre Togan, Yiwen Chu, Matthew Markham, Daniel J. Twitchen, Alexander S. Zibrov, Alexander Kubanek, Mikhail D. Lukin
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  ABSTRACT: We demonstrate quantum interference between indistinguishable photons emitted by two nitrogen-vacancy (NV) centers in distinct diamond samples separated by two meters. Macroscopic solid immersion lenses are used to enhance photon collection efficiency. Quantum interference is verified by measuring a value of the second-order cross-correlation function $g^{(2)}(0) = 0.35 \pm 0.04<0.5$. In addition, optical transition frequencies of two separated NV centers are tuned into resonance with each other by applying external electric fields. Extension of the present approach to generate entanglement of remote solid-state qubits is discussed.
  12/2011;
• Source

  Available from: ArXiv

  Article: Realization of Coherent Optically Dense Media via Buffer-Gas Cooling

  Tao Hong, Alexey V. Gorshkov, David Patterson, Alexander S. Zibrov, John M. Doyle, Mikhail D. Lukin, Mara G. Prentiss
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  ABSTRACT: We demonstrate that buffer-gas cooling combined with laser ablation can be used to create coherent optical media with high optical depth and low Doppler broadening that offers metastable states with low collisional and motional decoherence. Demonstration of this generic technique opens pathways to coherent optics with a large variety of atoms and molecules. We use helium buffer gas to cool 87Rb atoms to below 7 K and slow atom diffusion to the walls. Electromagnetically induced transparency (EIT) in this medium allows for 50% transmission in a medium with initial OD >70 and for slow pulse propagation with large delay-bandwidth products. In the high-OD regime, we observe high-contrast spectrum oscillations due to efficient four-wave mixing.
  06/2008;
• Source

  Available from: Vladimir A Sautenkov

  Article: Ultra-Slow Light and Enhanced Nonlinear Optical Effects in a Coherently Driven Hot Atomic Gas

  Michael M. Kash, Vladimir A. Sautenkov, Alexander S. Zibrov, L. Hollberg, George R. Welch, Mikhail D. Lukin, Yuri Rostovtsev, Edward S. Fry, Marlan O. Scully
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  ABSTRACT: We report the observation of small group velocities of order 90 meters per second, and large group delays of greater than 0.26 ms, in an optically dense hot rubidium gas (~360 K). Media of this kind yield strong nonlinear interactions between very weak optical fields, and very sharp spectral features. The result is in agreement with previous studies on nonlinear spectroscopy of dense coherent media.
  04/1999;
• Source

  Available from: Vladimir A Sautenkov

  Article: Ultraslow Group Velocity and Enhanced Nonlinear Optical Effects in a Coherently Driven Hot Atomic Gas

  R S, June, Michael M Kash, Vladimir A Sautenkov, Alexander S Zibrov, L Hollberg, George R Welch, Mikhail D Lukin, Yuri Rostovtsev, Edward S Fry, Marlan O Scully
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  ABSTRACT: We report the observation of small group velocities of order 90 ms and large group delays of greater than 0.26 ms, in an optically dense hot rubidium gas (360 K). Media of this kind yield strong nonlinear interactions between very weak optical fields and very sharp spectral features. The result is in agreement with previous studies on nonlinear spectroscopy of dense coherent media.
  Physical Review Letters 01/1999; · 7.37 Impact Factor
• Article: International Conference on Coherent and Nonlinear Optics

  Dmitri E. Nikonov, Marlan O. Scully, Mikhail D. Lukin, Edward S. Fry, Leo W. Hollberg, G. G. Padmbandu, George R. Welch, Alexander S. Zibrov
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  ABSTRACT: Two experiments in which laser oscillation without population inversion was obtained for the first time are reported. Analytical solutions are presented to elucidate the principles of the experiments. Numerical simulations and experimental results in a Rb vapor cell and a Na atomic beam for the gain profile are compared.© (1996) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
  05/1996;
• Article: Slow, ultraslow, stored, and frozen light

  Andrey B. Matsko, Olga Kocharovskaya, Yuri Rostovtsev, George R. Welch, Alexander S. Zibrov, Marlan O. Scully
  Advances in Atomic, Molecular, and Optical Physics 46:191-242. · 3.09 Impact Factor