Patents by Inventor Daniel Shiu

Daniel Shiu 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).

  • Single-photon transmission determination
    Patent number: 12726277
    Abstract: A computer-implemented method for determining a lower-bound for the number of successful single-photon transmissions from a transmitter to a receiver, wherein for multiple transmissions, one or more parameters may be selected from a plurality of predetermined discrete values, the method including determining, for each value, the number of transmissions sent by the transmitter having said value; determining, for each value, the number of transmissions received by the receiver having said value; and determining an estimator based on: the determined number of sent transmissions corresponding to each of the values, the determined number of received transmissions corresponding to each of the values, and a plurality of statistical parameters each associated with a statistical model of the number of photons sent per transmission from the transmitter for a respective value of the parameters, whereby the estimator is a lower-bound for successful single-photon transmissions and is strictly non-positively biased.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: September 1, 2026
    Assignee: Arqit Limited
    Inventor: Daniel Shiu
  • SINGLE-PHOTON TRANSMISSION DETERMINATION
    Publication number: 20250184011
    Abstract: A computer-implemented method for determining a lower-bound for the number of successful single-photon transmissions from a transmitter to a receiver, wherein for multiple transmissions, one or more parameters may be selected from a plurality of predetermined discrete values, the method including determining, for each value, the number of transmissions sent by the transmitter having said value; determining, for each value, the number of transmissions received by the receiver having said value; and determining an estimator based on: the determined number of sent transmissions corresponding to each of the values, the determined number of received transmissions corresponding to each of the values, and a plurality of statistical parameters each associated with a statistical model of the number of photons sent per transmission from the transmitter for a respective value of the parameters, whereby the estimator is a lower-bound for successful single-photon transmissions and is strictly non-positively biased.
    Type: Application
    Filed: January 5, 2023
    Publication date: June 5, 2025
    Inventor: Daniel Shiu