Patents by Inventor Roberta Ramponi

Roberta Ramponi 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).

  • INTEGRATED OPTICS LOGIC GATE FOR POLARIZATION-ENCODED QUANTUM QUBITS AND A METHOD FOR THE PRODUCTION AND USE THEREOF
    Publication number: 20140126030
    Abstract: A quantum logic gate for qubits, suitable for receiving as inputs at least two polarization-encoded qubits, includes at least one partially polarizing beam splitter (PPBS), the beam splitter comprising a first waveguide and a second waveguide which are constructed in integrated optics, the first and second waveguides having a refractive index contrast of between 0.1% and 6% and a birefringence of between 10?6 and 6*10?5.
    Type: Application
    Filed: May 3, 2012
    Publication date: May 8, 2014
    Applicants: UNIVERSITA' DEGLI STUDI DI ROMA LA SAPIENZA, CONSIGLIO NAZIONALE DELLE RICERCHE
    Inventors: Andrea Crespi, Paolo Mataloni, Roberta Ramponi, Linda Sansoni, Fabio Sciarrino, Giuseppe Vallone, Roberto Osellame
  • Reconfigurable optical device for wavelength division multiplexing networks
    Patent number: 7215856
    Abstract: A reconfigurable optical device for wavelength-division multiplexing networks, comprising two waveguides (A, B) parallel to each other, with two-dimensional confinement, coupled by a bi-directional coupler (C), suitable to selectively drop one and only one of the channels composing the Wavelength-Division multiplexing signal (WDM); the device is reconfigurable as, by appropriately varying the wavelength of the combined pumping beam inside a first waveguide (A), any channel forming the WDM signal can be dropped.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: May 8, 2007
    Assignee: Politecnico Di Milano
    Inventors: Roberto Osellame, Roberta Ramponi, Marco Marangoni
  • Reconfigurable optical device for wavelength division multiplexing networks
    Publication number: 20050047712
    Abstract: A reconfigurable optical device for wavelength-division multiplexing networks, comprising two waveguides (A, B) parallel to each other, with two-dimensional confinement, coupled by a bi-directional coupler (C), suitable to selectively drop one and only one of the channels composing the Wavelength-Division multiplexing signal (WDM); the device is reconfigurable as, by appropriately varying the wavelength of the combined pumping beam inside a first waveguide (A), any channel forming the WDM signal can be dropped.
    Type: Application
    Filed: March 13, 2002
    Publication date: March 3, 2005
    Inventors: Roberto Osellame, Roberta Ramponi, Marco Marangoni