Patents by Inventor Roman Sobolewski

Roman Sobolewski 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).

  • Superconducting single photon detector
    Patent number: 7049593
    Abstract: A single-photon detector includes a superconductor strip biased near its critical current. The superconductor strip provides a discernible output signal upon absorption of a single incident photon. In one example, the superconductor is a strip of NbN (niobium nitride). In another example, the superconductor strip meanders to increase its probability of receiving a photon from a light source. The single-photon detector is suitable for a variety of applications including free-space and satellite communications, quantum communications, quantum cryptography, weak luminescence, and semiconductor device testing.
    Type: Grant
    Filed: October 19, 2004
    Date of Patent: May 23, 2006
    Assignees: Credence Systems Corporation, University of Rochester
    Inventors: Roman Sobolewski, Grigory N. Gol'tsman, Alexey D. Semenov, Oleg V. Okunev, Kenneth R. Wilsher, Steven A. Kasapi
  • Superconducting single photon detector
    Publication number: 20050051726
    Abstract: A single-photon detector includes a superconductor strip biased near its critical current. The superconductor strip provides a discernible output signal upon absorption of a single incident photon. In one example, the superconductor is a strip of NbN (niobium nitride). In another example, the superconductor strip meanders to increase its probability of receiving a photon from a light source. The single-photon detector is suitable for a variety of applications including free-space and satellite communications, quantum communications, quantum cryptography, weak luminescence, and semiconductor device testing.
    Type: Application
    Filed: October 19, 2004
    Publication date: March 10, 2005
    Applicant: Credence Systems Corporation
    Inventors: Roman Sobolewski, Grigory Gol'tsman, Alexey Semenov, Oleg Okunev, Kenneth Wilsher, Steven Kasapi
  • Superconducting single photon detector
    Patent number: 6812464
    Abstract: A single photon detector includes a superconductor strip biased near its critical current. The superconductor strip provides a discernible output signal upon absorption of a single incident photon. In one example, the superconductor is a strip of NbN (niobium nitride). In another example, the superconductor strip meanders to increase its probability of receiving a photon from a light source. The single-photon detector is suitable for a variety of applications including free-space and satellite communications, quantum communications, quantum cryptography, weak luminescence, and semiconductor device testing.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: November 2, 2004
    Assignee: Credence Systems Corporation
    Inventors: Roman Sobolewski, Grigory N. Gol'tsman, Alexey D. Semenov, Oleg V. Okunev, Kenneth R. Wilsher, Steven A. Kasapi
  • Magneto-optical modulator for superconducting digital interface
    Patent number: 6661560
    Abstract: A magneto-optic modulator modulates signals from a superconducting circuit such as a single-flux-quantum (SFQ) logic system onto a carrier wave light beam. The modulator is formed by depositing a magneto-optic material such as EuSe onto a superconducting ground plane such as that of the circuit. A microwave microstrip line is formed on the magneto-optic material and carries a signal from the circuit. The signal induces an H field in the magneto-optic material which causes the magneto-optic material to modulate the light.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: December 9, 2003
    Assignee: University of Rochester
    Inventor: Roman Sobolewski