Patent application number | Description | Published |
20100119193 | Ultrafast and ultralow threshold single emitter optical switch - Electrical control of the emitter of a coupled quantum emitter-resonant cavity structure is provided. Electrodes are disposed near a semiconductor quantum dot coupled to a semiconductor optical cavity such that varying an applied bias at the electrodes alters an electric field at the quantum dot. Optical input and output ports are coupled to the cavity, and an optical response of the device relates light emitted from the output port to light provided to the input port. Altering the applied bias at the electrodes is capable of altering the optical response. Preferably, the closest electrode to the cavity is disposed between or away from angular lobes of the cavity mode, to reduce loss caused by the proximity of electrode to cavity. The present approach is applicable to both waveguide-coupled devices and non-waveguide devices. | 05-13-2010 |
20120194912 | OPTICAL SYSTEMS IMPLIMENTED WITH THERMALLY CONTROLLED SUB-WAVELENGTH GRATINGS - This disclosure is directed to thermally controlled optical systems. In one aspect, an optical system includes a sub-wavelength grating having a planar geometry and a grating pattern associated with a particular shape of, and direction in which, a wavefront emerges from the grating, when the grating is illuminated by a beam of light. The system includes at least one heating element separately connected to a current source. The current source to inject a current into each heating element to heat a corresponding region of the grating and produce a desired change in the shape of, and/or direction in which, the wavefront emerges from the grating. | 08-02-2012 |
20130107253 | ENTANGLEMENT PROCESS | 05-02-2013 |
20130107352 | QUANTUM OPTICAL DEVICE | 05-02-2013 |
20130279849 | MICRO-RING OPTICAL RESONATORS - Apparatuses, systems, and methods for micro-ring optical resonators are provided. An example of a micro-ring optical resonator apparatus includes an array of input waveguides with each input waveguide optically coupled to an array of micro-rings, an output waveguide operatively associated with each of the micro-rings, and a scattering object operatively associated with each of the micro-rings, wherein the scattering object is connected to the output waveguide. | 10-24-2013 |
20140034820 | LIGHT-DETECTION SYSTEMS - Light-detection systems that do not destroy the light to be detected or change the propagation direction of the light are described. In one aspect, a light-detection system includes an optical element composed of a substrate with a planar surface and a polarization insensitive, high contrast, sub-wavelength grating composed of posts that extend from the planar surface. The posts and/or lattice arrangement of the posts are non-periodically varied to impart orbital angular momentum and at least one helical wavefront on the light transmitted through the optical element. | 02-06-2014 |
20140072008 | COLOR CENTERS AFFECTED BY MAGNETIC FIELDS TO PRODUCE LIGHT BASED ON LASING - A resonant cavity, including a gain medium and a color center formed in the gain medium, is to be used for lasing in a system. The color center includes a lower laser level based on a plurality of spin states that are affected by a magnetic field. A gain associated with the system depends on the plurality of spin states. The system is to produce light based on lasing by the resonant cavity in response to application of pump energy to pump the color center. An intensity of the produced light is affected by the magnetic field in the presence of microwaves. | 03-13-2014 |
20140362374 | ANALYZING LIGHT BY MODE INTERFERENCE - Apparatuses and systems for analyzing light by mode interference are provided. An example of an apparatus for analyzing light by mode interference includes a number of waveguides to support in a multimode region two modes of the light of a particular polarization and a plurality of scattering objects offset from a center of at least one of the number of waveguides. | 12-11-2014 |