Patents by Inventor Chih Sung Chuu

Chih Sung Chuu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Ultrabright long biphoton generation with non-linear optical material
    Patent number: 8970944
    Abstract: Improved production of entangled photon pairs (biphotons) via spontaneous parametric down conversion (SPDC) is provided. In one aspect, forward-wave SPDC is performed in a monolithic resonator (resonant for both signal and idler) having a double pass pump geometry to provide a spectrally bright source of biphotons. In another aspect, backward-wave SPDC is performed in a resonator (resonant for both signal and idler) to provide a spectrally bright source of biphotons. For either of these approaches, the biphotons can be made to have polarization entanglement by using quasi phasematching (QPM) with two QPM periods simultaneously.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: March 3, 2015
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Chih-Sung Chuu, Guang-Yu Yin, Stephen E. Harris
  • Ultrabright long biphoton generation with non-linear optical material
    Publication number: 20140092467
    Abstract: Improved production of entangled photon pairs (biphotons) via spontaneous parametric down conversion (SPDC) is provided. In one aspect, forward-wave SPDC is performed in a monolithic resonator (resonant for both signal and idler) having a double pass pump geometry to provide a spectrally bright source of biphotons. In another aspect, backward-wave SPDC is performed in a resonator (resonant for both signal and idler) to provide a spectrally bright source of biphotons. For either of these approaches, the biphotons can be made to have polarization entanglement by using quasi phasematching (QPM) with two QPM periods simultaneously.
    Type: Application
    Filed: April 19, 2013
    Publication date: April 3, 2014
    Inventors: Chih Sung Chuu, Guang-Yu Yin, Stephen E. Harris