Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7447719 | Quantum computing method and quantum computer An (N+1) number of physical systems each having five energy levels |0>, |1>, |2>, |3>, and |4>, a qubit being expressed by |0> and |1>, are provided in an optical cavity having a cavity mode resonant with |2>-|3>, such that an N number of control systems and a targe... | 11/04/2008 |
| 7411187 | Ion trap in a semiconductor chip A micrometer-scale ion trap, fabricated on a monolithic chip using semiconductor micro-electromechanical systems (MEMS) technology. A single 111Cd+ ion is confined, laser cooled, and the heating measured in an integrated radiofrequency trap etched from a doped galli... | 08/12/2008 |
| 7359647 | Method and apparatus for transmitting and receiving power over optical fiber A method and apparatus for transmitting and receiving power over optical fiber is disclosed. In particular, a power over fiber system in which an optical network transmits electrical power via an optical signal and is also transmits data within the optical network a... | 04/15/2008 |
| 7352972 | Method and apparatus for the zonal transmission of data using building lighting fixtures This invention relates to the zonal transmission of data by radio means and optionally by optical means through the modulation of light from common building light fixtures, including the light output of fluorescent, mercury vapor, and other arc or discharge lamps an... | 04/01/2008 |
| 7236667 | Techniques for use of nanocavities to enhance quantum processing with photons and the Zeno effect Techniques are provided for placing atoms inside an appropriate nanocavity for enhancing two-photon absorption and quantum information processing based on the Zeno effect. Techniques for fabricating suitable nanocavities include: 1) a short length of optical fiber p... | 06/26/2007 |
| 7180645 | Quantum-state-generating apparatus, Bell measurement apparatus, quantum gate apparatus, and method for evaluating fidelity of quantum gate An apparatus for generating a quantum state of a two-qubit system including two qubits, each qubit being represented by a particle which invariably travels through one of two paths, includes a quantum gate composed of an interferometer for implementing an-interactio... | 02/20/2007 |
| 7167620 | Devices and methods for all-optical processing and storage Devices and methods for optical processing and storage are described. In a preferred embodiment, an integrated optical gate matrix, that includes a set of nonlinear elements and waveguides interconnecting at least some nonlinear elements in the set of nonlinear elem... | 01/23/2007 |
| 7131584 | Apparatus and means for updating a memory display A display system includes a light writable display associated with an identification code and arranged to receive an image wise pattern of light to form an image on the display; a display writer for producing the image wise pattern of light for writing the image on ... | 11/07/2006 |
| 7130093 | Optical implementation of bounded non-deterministic Turing Machines Method and an optical computation device for obtaining an indication about the existence of a feasible solution for a bounded instance of a problem that belongs to the non-deterministic polynomial class of problems, using parallel optical computations employing a mu... | 10/31/2006 |
| 7110431 | Hardware and software for performing computations in a short-code spread-spectrum communications system The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection ... | 09/19/2006 |
| 7081979 | Bit differential processing There is provided an apparatus for processing a segment of x optical bit slots from a packet comprising y optical bit slots, each bit slot defining a respective one of first and second complementary logical states, within a time span shorter than or equal to the tim... | 07/25/2006 |
| 7072588 | Multiplexed distribution of optical power An optical power distribution system and method permits multiple power consuming devices to be selectively supplied with power using a single fiber optic line. In a described embodiment, multiple electrical power consuming well tools are interconnected to a fiber op... | 07/04/2006 |
| 7068934 | Optical interconnect An optical interconnect comprises an input configured to receive light of a plurality of light wavelengths and a plurality of holographic optical elements. Each element configured to reflect one out of the plurality of light wavelengths and allowing others of the pl... | 06/27/2006 |
| 7046160 | LED warning light and communication system A light emitting diode (LED) warning signal light and communication device comprising a controller for generating a first observable light signal and a second non-observable light signal within said first light signal. The second light signal is formed of packets of... | 05/16/2006 |
| 7024070 | Electronic fiber optic switch with optical interconnect A large fiber optic switch system with a free-space optical interconnection configuration. The switch system comprises a plurality of individual switch units, each individual switch unit having a plurality of electronic multi-switch switches each multi-switch switch... | 04/04/2006 |
| 7019875 | Method and apparatus for single-photon source and quantum memory An optical switch and optical storage loop are used as the basis of a single-photon source and a quantum memory for photonic qubits. To operate as a single-photon source, the techniques include a source of a pair of photons, such as a parametric down-conversion crys... | 03/28/2006 |
| 7006267 | Techniques for high fidelity quantum teleportation and computing Techniques for high fidelity quantum teleportation include receiving an input photon representing a qubit. Ancilla photons are generated in a particular ancilla quantum state chosen to reduce a rate of error below a threshold error rate. The ancilla and the input ph... | 02/28/2006 |
| 6995404 | Techniques for quantum processing with photons and the zeno effect Techniques are provided that use the quantum Zeno effect to implement practical devices that use single photons as the qubits for quantum information processing. In the quantum Zeno effect, a randomly-occurring event is suppressed by frequent measurements to determi... | 02/07/2006 |
| 6947220 | Devices for information processing in optical communications Devices and methods for information processing in optical communications are provided. In its simplest embodiments, collimated light (1) passes through a non-grating diffractive structure (2) and a lens (3). The light is spatially processed in t... | 09/20/2005 |
| 6836751 | Optical controller An apparatus and method for controlling access to, or interaction with, a variety of different types of devices is provided. The system includes a plurality of different lights that flash sequentially, the lights being distinguishable on the basis of color, location... | 12/28/2004 |
| 6741374 | Techniques for performing logic operations using quantum states of single photons A method and apparatus for performing logic operations using quantum polarization states of single photons, include a first polarizing beam splitter having first input spatial modes and first output spatial modes for a first set of orthogonal polarizations. A second... | 05/25/2004 |
| 6711604 | Binary adder The present invention relates to an apparatus for determining the sum of first and second optical binary words. The apparatus uses a first optical logic gate and a second optical logic gate to generate respective first and second combination words which represent a ... | 03/23/2004 |
| 6542841 | Method for managing test measurements A method is provided for managing test measurements for an optical entity. The method can include determining if testing is needed, and building an object that includes a test variable and a plurality of independent variables. If testing is needed, the me... | 04/01/2003 |
| 6343307 | Synthesis of light beams A method and system for synthesizing a desired light beam including calculating a two-dimensional light filter for an optical element, the two-dimensional light filter being such that the optical element produces under free space propagation, in response ... | 01/29/2002 |
| 6178020 | Modules and methods for all photonic computing A method for all photonic computing, comprising the steps of: encoding a first optical/electro-optical element with a two dimensional mathematical function representing input data; illuminating the first optical/electro-optical element with a collimated b... | 01/23/2001 |
| 6016211 | Optoelectronic smart pixel array for a reconfigurable intelligent optical interconnect A packaged smart pixel array for a reconfigurable intelligent optical interconnect is described. The smart pixel array (298) comprises an optical-to-electronic optical I/O channel 68 input means, an electronic-to-optical optical I/O channel 68 output mean... | 01/18/2000 |
| 5770854 | Pattern-recognition computing and method for producing same Pattern-recognition computing can be accomplished using wave-type or other types pf energy. In pattern-recognition computing which uses a plurality of wave-type energy input patterns modulated with quantized information, energy from the patterns combines ... | 06/23/1998 |
| 5704015 | Optical operation element, optical data processing circuit and photoelectric operation element A modulating optical operation element is composed of a light receiving separation element having a pair of light receiving elements, a photoelectric operation element made of an operation element for calculating electric signals outputted from the light ... | 12/30/1997 |
| 5701396 | Multimode-laser for an optical information processing system such as a neural net An optical information processing system comprises a coding unit for individually coding a plurality of optical information carrier waves, and a processing unit for processing the plurality of coded waves. The processing unit has a laser for producing las... | 12/23/1997 |
| 5654538 | Optically addressed general purpose programmable logic device An array of pairs of photodetector elements is provided, where each pair intercepts a set of angularly separated light beams for each pixel, and an array of electrical logic circuits coupled to the photodetector elements, each change the polarization stat... | 08/05/1997 |
| 5650868 | Data transfer system An electromagnetic data transmission system is disclosed wherein a first and a second data link are connected between a transmitter CPU and a receiver CPU. The first data link, which is for transmitting data with high throughput rates, has a multi-directi... | 07/22/1997 |
| 5644123 | Photonic signal processing, amplification, and computing using special interference A means and method of controlling a plurality of energy beams with at least one of the plurality of beams. At least one first beam set produces special interference with at least one second beam set, at a first location(s), diverting energy from both beam... | 07/01/1997 |
| 5623366 | Photonic signal processing amplification, and computing using special interference A means and method of controlling a plurality of energy beams with at least one of the plurality of beams. At least one first beam set produces special interference with at least one second beam set, at a first location(s), diverting energy from both beam... | 04/22/1997 |
| 5617249 | Frequency-multiplexed logic, amplification and energy beam control A means and method for performing frequency-multiplexed logic, amplification, and energy beam control functions on individual channels simultaneously within a single device by using a plurality of frequency-multiplexed inputs each having beam sets of matc... | 04/01/1997 |
| 5614834 | Sampling receivers A Golay sampling receiver is used for optical sampling of voltage and charge at the internal nodes of analog and digital integrated circuits. The sampling receiver uses very high sampling rates together with narrow banding to recover very small signals in... | 03/25/1997 |
| 5576873 | Telecommunications switch architecture Telecommunications switch architectures and switching methods based on the principle of replication/broadcasting some or all of the incoming data from each input-switch port to all output switch ports. The replicated data is transferred to the output port... | 11/19/1996 |
| 5555126 | Dual phase amplification with phase logic A means, method and apparatus for dual-phase amplification of wave-type signals is disclosed comprising superimposing a constant level beam set and a modulated beam set to produce a first interference image at first and second locations. A first image com... | 09/10/1996 |
| 5539668 | Optical switching apparatus A light transmission circuit 20 is biased to one optical bistable region of its multistable characteristic by a bias light from a light source 29. The bias light is superimposed by plural control pulse lights, and the superimposed light is irradiated. If ... | 07/23/1996 |
| 5532856 | Planar optical mesh-connected tree interconnect network A mesh-connected tree (MCT) interconnect topology network which is a two-dimensional interconnect topology combining aspects of a conventional tree-network and a two-dimensional nearest-neighbor mesh network is implemented as a planar optical interconnect... | 07/02/1996 |
| 5466925 | Amplitude to phase conversion logic A means, method and apparatus is disclosed for providing at least one phase-modulated output from at least one amplitude-modulated input, which is used to produced the logical AND and OR functions having phase modulated outputs. A constant level bias beam... | 11/14/1995 |
