Hewlett-packard Development Company, L.p.

Kai-Mei Camilla Fu

Raymond G Beausoleil

Charles Santori

Marco Fiorentino

Zhihong Huang

Victor Marcel Acosta

Andrei Faraon

Paul Edward Barclay

David A Fattal

Michael Renne Ty Tan

John Paul Strachan

Matthew D Pickett

Zhen Peng

Lars Helge Thylen

Julien Borghetti

A quantum device includes a resonator and a tuning structure. The tuning structure is made a material such as a chalcogenide and is positioned to interact with the electromagnetic radiation in the resonator so that a resonant mode of the first resonator depends on a characteristic of the tuning structure. The resonator is optically coupled so that a transition between quantum states associated with a defect produces electromagnetic radiation in the resonator. The characteristic of the tuning structure is adjustable after fabrication of the resonator and the tuning structure.

Quantum optical device

A process for entangling quantum states of respective quantum systems measures electromagnetic radiation emitted from a first system and from a second system. The two systems are exposed to excitation radiation having a probability per time of producing a photon, and an interference element is coupled to receive photons from the first and second systems. The process further includes measuring a time during which the first and second systems were exposed to the excitation radiation before a photon is detected on either output channel of the interference element and applying an electromagnetic pulse that causes a relative phase shift of a portion of a quantum state of the first and second systems. Parameters of the electromagnetic pulse are selected based on measurements of the electromagnetic radiation from the first and second systems and the time measured.

Entanglement process

An apparatus for performing surface enhanced Raman spectroscopy includes an optical waveguide, a plurality of flexible nano-structures, wherein the plurality of nano-structures have respective free ends positioned within an evanescent field to be generated by light propagated through the optical waveguide, wherein the plurality of nano-structures are movable from a first position and a second position, wherein in the first position, the free ends of the plurality of nano-structures are substantially spaced from each other and in the second position, the free ends of a plurality of the nano-structures are substantially in contact with each other.

Apparatus for performing SERS

The present disclosure provides optical waveguide coupling devices and associated methods. In one example, an optical waveguide coupling device can comprise a dielectric grating coupler, a first optical waveguide attached to a first surface of the dielectric grating coupler, and a second optical waveguide attached to a second surface of the dielectric grating coupler. The second optical waveguide can be oriented opposed to the first optical waveguide allowing for communication therebetween via the sub-wavelength grating. Additionally, the dielectric grating coupler can comprise a first dielectric material; a sub-wavelength grating attached to the first dielectric material, the sub-wavelength grating having a higher refractive index than the first dielectric material; and a second dielectric material optically coupled to the sub-wavelength grating.

Optical waveguide coupling device and associated methods

A system for event detection uses a resistive switching device to record a detected event. The resistive switching device has a resistance adjustable by an applied voltage. The operation of the resistive switching device is controlled by a controller, which is configured to apply a switching voltage to the resistive switching device at a start time, and turn off the switching voltage in response to an event signal indicative of occurrence of an event. The resistance value of the resistive switching device resulting from the application of the switching voltage is indicative of the detection of the event and also the time of the occurrence of the event.

Fast time-tagged event detection using resistive switching devices

Various embodiments of the present invention are directed to optical fiber coupling systems and to methods for fabricating optical fiber coupling systems. In one aspect, an optical fiber coupling system includes a first resonant cavity abutting the end of an optical fiber. The optical fiber coupling system includes a second resonant cavity located adjacent to the first cavity. The first and second resonant cavities are separated by a sub-wavelength grating layer configured with a non-periodic sub-wavelength grating. The optical fiber coupling system selectively couples light into and/or out of the optical fiber core.

Optical fiber coupling systems and methods for fabricating the same

An optically integrated magnetic biosensor includes an optically detected magnetic resonance (ODMR) center and a fluidics layer configured to contain a solution comprising analytes, the fluidics layer being disposed over the ODMR center. A light source which generates incident light excites electrons within the ODMR center from a ground state to an excited state and a radio frequency (RF) antenna generates an RF field incident with frequencies which correspond to ground state transitions in the ODMR center. The ODMR center produces emitted light when illuminated by the incident light. The characteristics of the emitted light are influenced by the RF field and magnetic nanoparticles attached to the analytes. A method for detecting analytes using optically detected magnetic resonance is also provided.

Optically integrated biosensor based on optically detected magnetic resonance

A magnetometer includes a tapered microfiber having a curved portion, an excitation laser in optical communication with the tapered microfiber, and a nanocrystal attached to the curved portion of the tapered microfiber. Laser light emitted from the excitation laser interacts with the nanocrystal to create an emitted photon flux which is monitored to detect a magnetic field passing through the nanocrystal.

Microfiber magnetometer

Disclosed herein are optically and electrically actuatable devices. The optically and electrically actuatable device includes an insulating substrate, two electrodes, an active region, and a concentrator. At least one of the two electrodes is established on the insulating substrate, and another of the two electrodes is established a spaced distance vertically or laterally from the at least one of the two electrodes. The other of the two electrodes is an optical input electrode. The active region is established between or beneath the two electrodes. The concentrator is optically coupled to the optical input electrode for concentrating incident light such that a predetermined portion of the active region is optically actuatable.

Growing community of inventors

Stanford, CA, United States of America

Kai-Mei Camilla Fu