Abstract: According to one embodiment, a quantum information system includes a source of time dependent entangled photons and an indicating unit. The indicating unit indicates the entangled state of the entangled photons based on the emission time of one or more of the entangled photons.

Abstract: An optical system including: a photon source; first directing elements configured to direct photons to follow a first path through the optical system; second directing elements configured to direct photons to follow a second path through the optical system, wherein the second path is the reverse of the first path, photons travelling through the first path having a different polarization to those travelling through the second path; and a mechanism varying the relative phase shift between photons following the first path and photons following the second path.

Abstract: A system for quantum teleportation of a quantum state of an input photon, including: a light emitting diode configured to produce a polarization entangled photon pair; a beam splitter configured to direct photons of the entangled photon pair along respective first and second paths; a measurement unit performing a joint measurement on the input photon; a timing unit configured to measure a first delay between the input photon and the photon of the entangled photon pair at a point of maximum indistinguishability of the photons as they pass through the joint measurement unit, and to measure a second delay between the two photons of the entangled photon pair as they exit the light emitting diode; a controller configured to determine a teleportation measurement is valid if the first delay is within a first predetermined timing window and the second delay is within a second predetermined timing window.

Abstract: An optical device comprising a quantum dot provided in a resonant confinement structure, an output from said confinement structure and a pulsed excitation source for said quantum dot, wherein the quantum dot is configured to allow the emission of photons having a first energy in response to a pulse from said excitation source, said resonant confinement structure providing optical confinement, the first energy being different to the resonant energy of the resonant confinement structure, the optical device further comprising a timing unit, said timing unit being configured to select photons which have been emitted from the quantum dot due to excitation by a pulse, the timing unit selecting photons emitted after the duration of the pulse which caused the emission of the photons.

Abstract: A component comprising a qubit and a controller for said qubit, said component comprising a quantum dot and an excitation portion configured to produce a neutral exciton state in said quantum dot to form said qubit, the component further comprising a measuring unit to make an optical measurement relating to the orientation of said state, wherein said controller comprises voltage source coupled to electrical contacts configured to apply a modulated electric field across said quantum dot, wherein the modulation is faster than the decay time of said neutral exciton state.

Abstract: An optical data retrieval system configured to retrieve data from a data storage medium, including: a source of n path-entangled photons, where n is an integer of at least 2; a detector system configured to determine if n photons have been received; and a mechanism to direct photons from the source to the data storage medium and to the detector system.

Abstract: A photon source comprising: a quantum dot; electrical contacts configured to apply an electric field across said quantum dot: and an electrical source coupled to said contacts, said electrical source being configured to apply a potential such that carriers are supplied to said quantum dot to form a bi-exciton or higher order exciton, wherein said photon source further comprises a barrier configured to increase the time which a carrier takes to tunnel to and from said quantum dot to be greater than the radiative lifetime of an exciton in the quantum dot, the quantum dot being suitable for emission of entangled photons during decay of a bi-exciton or higher order exciton.

Abstract: An example includes an apparatus for use within a header of an implantable medical device, the apparatus including a substantially annular spring, sized and shaped to be disposed in the header, the spring defining a loop extending about a central axis, the spring including a plurality of elastically deformable switchback portions that both zigzag and curve transversely about the loop to define a surface that at least partially encompasses the loop.

Abstract: A belt fastener applicator tool and method are provided. The tool is very simple and provides a low cost tool for applying staple belt fasteners to belt ends. The applicator tool includes a plate body having both anvil and comb portions that are fixed thereto so as to be integrated therewith. In one form, the tool has a one-piece construction so that the plate body and anvil and comb portions are integrally formed together. Preferably, the comb portion includes upstanding comb locating members for receiving hinge loops, and the anvil portion includes both initial set anvil wells on one side of the locating members and a final set flat surface portion on the other side of the locating members. The same tool is used for both initial set and final set staple leg setting operations by turning the tool around with an operator using a hammer for staple setting operations.

Abstract: A system and method is disclosed determining caloric burn via an HCI system. Using a capture device which is able to detect the thickness of a user's arms, legs, torso, etc., the system determines a mass for each of a user's body parts. Thereafter, in one example, the system measures caloric burn for a given body part as a function of how far the body part was displaced, a mass of the body part displaced and gravity.

Abstract: A component comprising a qubit and a controller for said qubit, said component comprising a quantum dot and an excitation portion configured to produce a neutral exciton state in said quantum dot to form said qubit, the component further comprising a measuring unit to make an optical measurement relating to the orientation of said state, wherein said controller comprises voltage source coupled to electrical contacts configured to apply a modulated electric field across said quantum dot, wherein the modulation is faster than the decay time of said neutral exciton state.

Abstract: A folding wagon is provided having a frame with cross-member pairs that open and close in a scissor-like motion. The cross-members are connected to tower members at the corners by joints. Upper ends of the cross-members connect to slider joints that are movable along the length of the tower members. A cargo area is attached to the frame. The wagon is configurable between a collapsed position and a deployed or expanded position.

Abstract: A photon source comprising: a quantum dot; electrical contacts configured to apply an electric field across said quantum dot: and an electrical source coupled to said contacts, said electrical source being configured to apply a potential such that carriers are supplied to said quantum dot to form a bi-exciton or higher order exciton, wherein said photon source further comprises a barrier configured to increase the time which a carrier takes to tunnel to and from said quantum dot to be greater than the radiative lifetime of an exciton in the quantum dot, the quantum dot being suitable for emission of entangled photons during decay of a bi-exciton or higher order exciton.

Abstract: According to one embodiment, a quantum information system includes a source of time dependent entangled photons and an indicating unit. The indicating unit indicates the entangled state of the entangled photons based on the emission time of one or more of the entangled photons.

Abstract: An optical data retrieval system configured to retrieve data from a data storage medium, including: a source of n path-entangled photons, where n is an integer of at least 2; a detector system configured to determine if n photons have been received; and a mechanism to direct photons from the source to the data storage medium and to the detector system.

Abstract: An optical system including: a photon source; first directing elements configured to direct photons to follow a first path through the optical system; second directing elements configured to direct photons to follow a second path through the optical system, wherein the second path is the reverse of the first path, photons travelling through the first path having a different polarization to those travelling through the second path; and a mechanism varying the relative phase shift between photons following the first path and photons following the second path.

Abstract: The invention provides a fabric valve assembly for a climate control system of a vehicle. The fabric valve assembly includes a housing positionable in a vehicle. The housing has at least one edge defining at least one housing aperture for directing movement of an air stream. The fabric valve assembly also includes a plastic frame defining at least one frame aperture. The plastic frame is operable to move between a first position parallel to and spaced from the at least one housing aperture and a second position spaced from the first position. The fabric valve assembly also includes a cloth member fixedly engaged with the plastic frame. The cloth member extends taut relative to the at least one frame aperture to close and seal the at least one housing aperture when the plastic frame is in the first position.

Abstract: A photon source comprising a quantum dot comprising a confined conduction band energy level capable of being populated with at least one carrier and a confined valence band energy level capable of being populated by at least one carrier is provided, the source further comprises supply means for intermittently supplying at least one carrier to the energy levels to create an exciton in the quantum dot, wherein the supply means are configured to regulate the supply of carriers such that as the exciton decays either a single photon or a plurality of single photons each having different distinct energies are emitted during a predetermined time interval. The source is configured to be able to enhance the production of a desired type of exciton and can also be configured to exploit the use of higher order excitons such as biexcitons.

Abstract: A novel air flow control valve for an air outlet in an HVAC housing provides for strong, even seal pressure all the way around the edge of the opening. In stead of a swinging door hinged at one edge of the opening, in which seal pressure is strong on the hinge edge but weaker on the opposite edge, a flat panel is moved straight toward and away from the opening. In the closed position, the sealing pressure is even all the way around. The sealing panel is moved back and forth by a rotary cam mechanism.

Abstract: An air conditioning system of the present invention for an automotive vehicle includes a housing having at least two sections connected by two side by side air passage. A blower device of the air conditioning system discharges air into the housing. An evaporator is disposed in one of the sections for taking heat from the air discharged from the blower device to produce cool air. A heater is disposed in the other section positioned downstream of the evaporator for adding heat to the cool air to produce warm air. First and second sliding valve plates mechanically communicated with a driving mechanism of the present invention are supported by the housing for selectively closing the two side by side air passages thereby regulating air flow of cool and warm air.