Abstract: A system and method for operating a quantum key distribution system including a receiver to receive an optical signal from a transmitter, the receiver including a first signal detection unit (1SDU) and a second signal detection unit (2SDU) for detecting events associated with single photons; an optical switch to alternate between a first switch position to direct a received optical signal to the 1SDU and a second switch position to direct a received optical signal to the 2SDU, such that the 1SDU and the 2SDU correspond to the first and second switch positions respectively; a detection time tagger to tag the events at the 1SDU and the 2SDU according to time, switch position, and signal detection unit, to introduce a correlation between a time in which an event is registered, the switch position, and the signal detection unit; and a timing recovery module connected to the detection time tagger.

Abstract: A system and method for operating a quantum key distribution system including a receiver to receive an optical signal from a transmitter, the receiver including a first signal detection unit (1SDU) and a second signal detection unit (2SDU) for detecting events associated with single photons; an optical switch to alternate between a first switch position to direct a received optical signal to the 1SDU and a second switch position to direct a received optical signal to the 2SDU, such that the 1SDU and the 2SDU correspond to the first and second switch positions respectively; a detection time tagger to tag the events at the 1SDU and the 2SDU according to time, switch position, and signal detection unit, to introduce a correlation between a time in which an event is registered, the switch position, and the signal detection unit; and a timing recovery module connected to the detection time tagger.

Abstract: A gun safety system can include a mount assembly comprising a mounting rail and a first lock mechanism, the mount assembly configured to secure the mounting rail to a support structure; and a gun safe assembly comprising an outer housing and an inner housing assembly disposed within the outer housing, the inner housing assembly including a sleeve at least partially defining a gun storage cavity, the outer housing comprising a first mounting rail guide, the first lock mechanism being accessible through the gun storage cavity in response to the gun safety system being in a docked configuration.

Abstract: A system and method including at a transmitter emitting N single-wavelength quantum beams from N faint photon sources; multiplexing the N single-wavelength quantum beams using a first wavelength division multiplexer (WDM) to produce a combined multi-wavelength quantum beam, wherein the combined multi-wavelength quantum beam comprises a series of interleaved single-photon events having different wavelengths, and has a repetition rate N times that of individual single-wavelength quantum beams; transmitting the combined multi-wavelength quantum beam to a receiver; and at the receiver: de-multiplexing the combined multi-wavelength quantum beam according to the wavelength using a second WDM to recover the N single-wavelength quantum beams; at N single photon detection units, receiving a respective quantum beam of the N quantum beams and detecting single photon events from the respective quantum beam, such that each single photon detection unit corresponds to a respective quantum beam and as such the respective wav

Abstract: A square edge recessed lug paver having recessed lugs that produce consistent joint size during installation without the use of additional pieces of equipment, while maintaining a square edge is described. The equipment and method to produce the square edge recessed lug paver is also described, where the recessed lug roller forms the recessed lugs of the square edge recessed lug pavers. The recessed lug roller includes at least one recessed portion and at least two compressing portions. The recessed lugs are formed on an uncut slug after extrusion of the slug.

Abstract: A gun safety system can include a mount assembly comprising a mounting rail and a first lock mechanism, the mount assembly configured to secure the mounting rail to a support structure; and a gun safe assembly comprising an outer housing and an inner housing assembly disposed within the outer housing, the inner housing assembly including a sleeve at least partially defining a gun storage cavity, the outer housing comprising a first mounting rail guide, the first lock mechanism being accessible through the gun storage cavity in response to the gun safety system being in a docked configuration.

Abstract: There is herein provided a method of determining whether one or more pairs of qubits are quantum-entangled, the method comprising: performing a Bell State measurement on a first qubit, the first qubit being from a first multi-partite quantum-entangled state and a second qubit, the second qubit being from a second multi-partite quantum-entangled state, performing a Bell Inequality test on a third qubit, the third qubit being from the first multipartite quantum-entangled state and a fourth qubit, the fourth qubit being from the second quantum-entangled state, determining, using an outcome of the Bell Inequality test, whether a fifth qubit, the fifth qubit being from the first multipartite quantum-entangled state is quantum-entangled with a sixth qubit, the sixth qubit being from the second multi-partite quantum-entangled state.

Abstract: A method is provided for configuring a target computer system in accordance with a computer image. The method comprises the steps of determining a hardware configuration of the target system, reconfiguring a hardware abstraction layer of the target system, transferring information from the computer image to a storage device in the target computer, and using the transferred information to reconfigure the target computer.