Patent application number | Description | Published |
20090310784 | QKD System Alignment - QKD receiving apparatus is provided with an alignment-correction system for correcting misalignment of a quantum signal received at an optical port of the apparatus relative to a quantum-signal detector of the receiving apparatus. The alignment-correction system comprises a misalignment measuring subsystem for making multiple different misalignment measures, and a misalignment compensation subsystem for adjusting the relative alignment of the quantum signal and quantum-signal detector in dependence on the misalignment measures made. The misalignment measuring subsystem comprises an alignment-beam source, an alignment-beam detector arrangement, and optical components for guiding an alignment beam from the alignment-beam source to the optical port, and for guiding the alignment beam, after external retro-reflection at a cooperating QKD transmitting apparatus from the optical port to the alignment-beam detector arrangement. | 12-17-2009 |
20120134675 | Quantum Repeater And System And Method For Creating Extended Entanglements - An iterative method is provided for progressively building an end-to-end entanglement between qubits in first and second end nodes ( | 05-31-2012 |
20120148237 | Quantum Repeater And System And Method For Creating Extended Entanglements - A method is provided of creating an end-to-end entanglement ( | 06-14-2012 |
20120155870 | Method And Apparatus For Selectively Routing Entanglement Building - A method and apparatus ( | 06-21-2012 |
20120177200 | QUANTUM KEY DISTRIBUTION METHOD AND APPARATUS - A QKD transmission apparatus comprises a GPS receiver module operable to receive a GPS signal, and a processor operable to use the GPS signal to derive a clock signal for transmission of a QKD signal. | 07-12-2012 |
20130055214 | SYSTEM AND METHOD TO INDICATE CODE BLOCK EXECUTION - In one implementation, computer executable instructions are provided to identify a group of instructions corresponding to a code block for an executable module. The instructions increment a counter associated with the code block to indicate the code block has been tested. | 02-28-2013 |
20130163759 | QUANTUM KEY DISTRIBUTION METHOD AND APPARATUS - A QKD transmission method comprises generating a transmission list for a plurality of data bits, the list comprising a randomized timing schedule defining respective times for transmission of the data bits, providing a clock signal and using the clock signal to initiate the transmission of the data bits at a predetermined time in order to provide a QKD signal, and an apparatus therefor. | 06-27-2013 |
20130179971 | Virtual Machines - A computerized method for detecting a threat by observing multiple behaviors of a computer system in program execution from outside of a host virtual machine, including mapping a portion of physical memory of the system to a forensic virtual machine to determine the presence of a first signature of the threat; and, on the basis of the determination deploying multiple further forensic virtual machines to determine the presence of multiple other signatures of the threat. | 07-11-2013 |