摘要:
A photonic interconnect method avoids high capacitance electric interconnects by using optical signals to communicate data between devices. The method 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, which can be fabricated at defects in a photonic bandgap crystal, can be employed for the photonic interconnect method. The interconnect method can be used for both classical and quantum information processing.
摘要:
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. The interconnect system can be used for both classical and quantum information processing.
摘要:
Quantum information processing structures and methods use photons and four-level matter systems in electromagnetically induced transparency (EIT) arrangements for one and two-qubit quantum gates, two-photon phase shifters, and Bell state measurement devices. For efficient coupling of the matter systems to the photons while decoupling the matter systems from the phonon bath, molecular cages or molecular tethers maintain the atoms within the electromagnetic field of the photon, e.g., in the evanescent field surrounding the core of an optical fiber carrying the photons. To reduce decoherence caused by spontaneous emissions, the matter systems can be embedded in photonic bandgap crystals or the matter systems can be selected to include metastable energy levels.
摘要:
Embodiments of the present invention include dense, but accessible and well-interconnected component arrangements within multi-component systems, such as high-end multi-processor computer systems, and methods for constructing such arrangements. In a described embodiment, integrated-circuit-containing processing components, referred to as a “flat components,” are arranged into local blocks of intercommunicating flat components. The local flat-component blocks are arranged into interconnected, primitive multi-local-block repeating units, and the primitive local-block repeating units are layered together in a three-dimensional, regularly repeating structure that can be assembled to approximately fill any specified three-dimensional volume. The arrangement provides for relatively short, direct pathways from the surface of the specified volume to any particular local block and flat component within the three-dimensional arrangement.
摘要:
Controlling the propagation of electromagnetic radiation is described. A photonic bandgap medium is placed in the path of the electromagnetic radiation, the photonic bandgap medium comprising a photorefractive material. Control radiation is projected onto a surface of the photonic bandgap medium. The control radiation spatially varies a refractive index of the photorefractive material to control propagation of the electromagnetic radiation through the photonic bandgap medium.
摘要:
A sensor includes traps that are adjacent to a waveguide and capable of holding a contaminant for an interaction with an evanescent field surrounding the waveguide. When held in a trap, a particle of the contaminant, which may be an atom, a molecule, a virus, or a microbe, scatters light from the waveguide, and the scattered light can be measured to detect the presence or concentration of the contaminant. Holding of the particles permits sensing of the contaminant in a gas where movement of the particles might otherwise be too fast to permit measurement of the interaction with the evanescent field. The waveguide, a lighting system for the waveguide, a photosensor, and a communications interface can all be fabricated on a semiconductor die to permit fabrication of an autonomous nanosensor capable of suspension in the air or a gas being sensed.
摘要:
In one aspect of the present invention, an electric-field-enhancement structure is disclosed. The electric-field-enhancement structure includes a substrate and an ordered arrangement of dielectric particles having at least two adjacent dielectric particles spaced from each other a controlled distance. The controlled distance is selected so that when a resonance mode is excited in each of the at least two adjacent dielectric particles responsive to excitation electromagnetic radiation, each of the resonance modes interacts with each other to result in an enhanced electric field between the at least two adjacent dielectric particles. Other aspects of the present invention are electric-field-enhancement apparatuses that utilize the described electric-field-enhancement structures, and methods of enhancing an electric field between adjacent dielectric particles.
摘要:
Various embodiments of the present invention are directed to integrated circuits having photonic interconnect layers and methods for fabricating the integrated circuits. In one embodiment of the present invention, an integrated circuit comprises an electronic device layer and one or more photonic interconnect layers. The electronic device layer includes one or more electronic devices, and the electronic device layer is attached to a surface of an intermediate layer. One of the photonic interconnect layers is attached to an opposing surface of the intermediate layer, and each of the photonic interconnect layers has at least one photonic device in communication with at least one of the electronic devices of the electronic device layer.
摘要:
Various embodiments of the present invention are directed to integrated circuits having photonic interconnect layers and methods for fabricating the integrated circuits. In one embodiment of the present invention, an integrated circuit comprises an electronic device layer and one or more photonic interconnect layers. The electronic device layer includes one or more electronic devices, and the electronic device layer is attached to a surface of an intermediate layer. One of the photonic interconnect layers is attached to an opposing surface of the intermediate layer, and each of the photonic interconnect layers has at least one photonic device in communication with at least one of the electronic devices of the electronic device layer.
摘要:
Various embodiments of the present invention are directed to quantum-dot-based quantum computer architectures that are scalable and defect tolerant and to methods for fabricating quantum dots in quantum computer architectures. In one embodiment of the present invention, a node of quantum computer architecture comprises a first photonic device supported by a substrate. The quantum computer architecture also includes a number of quantum dots coupled to the first photonic device, and a switch supported by the substrate that controls transmission of electromagnetic waves between a bus waveguide and the quantum dots.