Patents by Inventor William Munro

William Munro 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).

  • Publication number: 20070016534
    Abstract: A secure transaction method is provided for publicly-accessible transaction terminals. The method uses quantum key distribution (QKD) between a hand-portable QKD device and a complimentary QKD apparatus incorporated the transaction terminal. After the QKD device has been brought up to the transaction terminal, the QKD device and the complimentary QKD apparatus of the terminal are is used to provide the device and terminal with new secret shared random material. The new secret shared random material is then used to establish a secure classical communication channel between the device and transaction terminal for conducting a transaction. An ATM terminal and POS terminal that use quantum key distribution are also disclosed.
    Type: Application
    Filed: June 19, 2006
    Publication date: January 18, 2007
    Inventors: Keith Harrison, William Munro, Stephen Crane
  • Publication number: 20070014415
    Abstract: A quantum key distribution (QKD) method involves the sending of random data from a QKD transmitter to a QKD receiver over a quantum signal channel, and the QKD transmitter and receiver respectively processing the data transmitted and received over the quantum signal channel in order to seek to derive a common random data set. This processing is effected with the aid of messages exchanged between QKD transmitter and receiver over an insecure classical communication channel. The processing concludes with a check, effected by an exchange of authenticated messages over the classical communication channel, that the QKD transmitter and receiver have derived the same random data set. At least some of the other messages exchanged during processing are exchanged without authentication and integrity checking. A QKD transmitter and QKD receiver are also disclosed.
    Type: Application
    Filed: June 16, 2006
    Publication date: January 18, 2007
    Inventors: Keith Harrison, William Munro, Liqun Chen
  • Publication number: 20070016794
    Abstract: In carrying out a task that consumes data from a one-time pad, task inputs comprising at least first data and second data from the pad, are combined together to form an output from which the data used from the pad cannot be recovered without knowledge of at least one of the first and second data. The task concerned can be, for example, the encrypting of a message or the creating of an attribute verifier.
    Type: Application
    Filed: June 16, 2006
    Publication date: January 18, 2007
    Inventors: Keith Harrison, Timothy Spiller, William Munro, Christopher Tofts
  • Publication number: 20060115086
    Abstract: A quantum random number generator uses measurements of a quantum state to generate a random value and to authenticate that the quantum state had the required properties for generation of a random series having the desired statistics. One exemplary embodiment generates an entangled photon pair in the singlet Bell state, measures one photon to extract a random value, and measures the other photon for confirmation that the photon pair were in the singlet Bell state. Another embodiment of the invention performs tomographic analysis of a state used for random number generation to confirm that the state used had the desired properties.
    Type: Application
    Filed: November 26, 2004
    Publication date: June 1, 2006
    Inventors: Raymond Beausoleil, William Munro, Timothy Spiller
  • Publication number: 20060056631
    Abstract: Quantum testing can compare unknown photon states in a manner suitable for a validation check of a quantum digital signature, testing of the operation of a quantum gate, or detecting of entanglement. The effect of the QSC system can be used to entangle input photon states. QSC system can include a control swap gate having a control channel that is measured, a beam splitter and a controlled phases gate with a control channel that is measured, or a beam splitter with a parity detector on an output channel. The operation of the QSC system can also be used to generate an entangled photon state.
    Type: Application
    Filed: September 13, 2004
    Publication date: March 16, 2006
    Inventors: Raymond Beausoleil, William Munro, Timothy Spiller, Willem van Dam
  • Publication number: 20060022832
    Abstract: A method of verifying the position of a tagging device is described.
    Type: Application
    Filed: July 30, 2004
    Publication date: February 2, 2006
    Inventors: Adrian Kent, William Munro, Timothy Spiller, Raymond Beausoleil
  • Publication number: 20060017992
    Abstract: Nonlinear electromagnetic elements can efficiently implement quantum information processing tasks such as controlled phase shifts, non-demolition state detection, quantum subspace projections, non-demolition Bell state analysis, heralded state preparation, quantum non-demolition encoding, and fundamental quantum gate operations. Direct use of electromagnetic non-linearity can amplify small phase shifts and use feed forward systems in a near deterministic manner with high operating efficiency. Measurements using homodyne detectors can cause near deterministic projection of input states on a Hilbert subspace identified by the measurement results. Feed forward operation can then alter the projected state if desired to achieve a desired output state with near 100% efficiency.
    Type: Application
    Filed: July 26, 2004
    Publication date: January 26, 2006
    Inventors: Raymond Beausoleil, William Munro, Timothy Spiller, Sean Barrett, Pieter Kok, Kae Nemoto
  • Publication number: 20050254823
    Abstract: Systems and methods convert or transfer quantum information from one photonic representation or state to another. This permits conversion of quantum information from one encoding to another and to representations that are convenient, efficient, or required for desired manipulations.
    Type: Application
    Filed: April 30, 2004
    Publication date: November 17, 2005
    Inventors: Raymond Beausoleil, William Munro, Timothy Spiller, Kae Nemoto
  • Publication number: 20050131746
    Abstract: A quantum approach to the economically significant n-player public goods or similar n-player game requires only two-particle entanglement and is thus much easier to implement than games requiring n-particle entanglements. Two-particle entanglements are sufficient to give near optimal expected payoff when players use a simple mixed strategy for which no player can benefit by making different choices. This mechanism can also address some heterogeneous preferences among the players. Quantum games in accordance with the invention can be simulated on classical computers without requiring impractical amounts of processing power for large numbers of players.
    Type: Application
    Filed: December 12, 2003
    Publication date: June 16, 2005
    Inventors: Raymond Beausoleil, Kay-Yut Chen, Tad Hogg, Li Zhang, William Munro
  • Publication number: 20050078902
    Abstract: A photonic interconnect system avoids high capacitance electric interconnects by using optical signals to communicate data between devices. The system can provide massively parallel information output by mapping logical addresses to frequency bands, so that modulation of a selected frequency band can encode information for a specific location corresponding to the logical address. Wavelength-specific directional couplers, modulators, and detectors for the photonic interconnect system can be efficiently fabricated at defects in a photonic bandgap crystal.
    Type: Application
    Filed: October 11, 2003
    Publication date: April 14, 2005
    Inventors: Raymond Beausoleil, Philip Kuekes, William Munro, Timothy Spiller, R. Williams, Sean Barrett
  • Publication number: 20050036624
    Abstract: A method of establishing a shared secret random cryptographic key between a sender and a recipient using a quantum communications channel is described.
    Type: Application
    Filed: July 25, 2003
    Publication date: February 17, 2005
    Inventors: Adrian Kent, William Munro, Timothy Spiller, Raymond Beausoleil
  • Patent number: 5181180
    Abstract: An apparatus which monitors and maintains an optimum balance between the main phases of a multi-phase multiple load local electrical distribution system. A series of sensors monitor the current draw of each load and each main phase. A control system samples the sensors, calculates which loads to transfer or shed to achieve optimum balance between the main phases, based on user defined data for each load and transfers or sheds the loads using relays.
    Type: Grant
    Filed: August 16, 1990
    Date of Patent: January 19, 1993
    Inventor: William A. Munro