Andrei Te Faraon

US Patent:

7994467, Aug 9, 2011

Filed:

Jun 6, 2008

Appl. No.:

12/134414

Inventors:

Ilya Fushman - Palo Alto CA, US
Andrei Faraon - Palo Alto CA, US
Jelena Vuckovic - Palo Alto CA, US
Dirk Englund - Stanford CA, US

Assignee:

The Board of Trustees of the Leland Stanford Junior University - Palo Alto CA

International Classification:

G01J 1/20
G02B 6/26

US Classification:

250216, 2502011, 385 27, 385129

Abstract:

Aspects of the disclosure are directed to optical microcavities and emitters that are spectrally aligned in an arrangement having an array of such microcavity-emitter combinations. The spectral alignment can be selective, in that a portion of the array of microcavity-emitter combinations, or a single microcavity-emitter combination, can be individually spectrally aligned. In specific examples, light is coupled within a semiconductor device having wavelength-dependent structures and optical cavities optically couple to the wavelength-dependent structures. One of the optical cavities and a wavelength-dependent structure are spectrally aligned, independent of another of the optical cavities.

US Patent:

20100119193, May 13, 2010

Filed:

Nov 12, 2009

Appl. No.:

12/590729

Inventors:

Dirk Englund - Thousand Oaks CA, US
Andrei Faraon - Menlo Park CA, US
Jelena Vuckovic - Palo Alto CA, US
IIya Fushman - Palo Alto CA, US

International Classification:

G02B 6/26
H01L 29/66

US Classification:

385 16, 257 14, 257E29168, 977774

Abstract:

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.

US Patent:

20120194912, Aug 2, 2012

Filed:

Jan 31, 2011

Appl. No.:

13/018018

Inventors:

Andrei Faraon - Menlo Park CA, US
David A. Fattal - Mountain View CA, US
Raymond G. Beausoleil - Redmond WA, US

International Classification:

G02B 5/18

US Classification:

359573

Abstract:

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.

US Patent:

20130107253, May 2, 2013

Filed:

Oct 28, 2011

Appl. No.:

13/284536

Inventors:

Charles M. Santori - Palo Alto CA, US
Kai-Mei Fu - Palo Alto CA, US
Andrei Faraon - Menlo Park CA, US
Victor M. Acosta - San Francisco CA, US
Zhihong Huang - San Jose CA, US
Raymond G. Beausoleil - Redmond WA, US

International Classification:

G01N 21/65

US Classification:

356301

Abstract:

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.

US Patent:

20130107352, May 2, 2013

Filed:

Oct 28, 2011

Appl. No.:

13/284262

Inventors:

Charles M. Santori - Palo Alto CA, US
Andrei Faraon - Menlo Park CA, US
Kai-Mei Fu - Palo Alto CA, US
Victor M. Acosta - San Francisco CA, US
Zhihong Huang - San Jose CA, US
Lars H. Thylen - Huddinge, SE
Raymond G. Beausoleil - Redmond WA, US

International Classification:

H01S 3/05

US Classification:

359346

Abstract:

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.

US Patent:

20130279849, Oct 24, 2013

Filed:

Apr 24, 2012

Appl. No.:

13/454462

Inventors:

Charles M. Santori - Palo Alto CA, US
Marco Fiorentino - Mountain View CA, US
Zhen Peng - Foster City CA, US
David A. Fattal - Mountain View CA, US
Andrei Faraon - Menlo Park CA, US
Raymond G. Beausoleil - Redmond WA, US

International Classification:

G02B 6/26
G02B 6/34

US Classification:

385 30, 385 37, 385 31

Abstract:

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.

US Patent:

20140034820, Feb 6, 2014

Filed:

Apr 20, 2011

Appl. No.:

14/111720

Inventors:

David A Fattal - Mountain View CA, US
Peter George Hartwell - Sunnyvale CA, US
Andrei Faraon - Menlo Park CA, US
Raymond G. Beausoleil - Redmond WA, US

International Classification:

B81B 3/00
G02B 5/18

US Classification:

250237 G, 359569, 250216

Abstract:

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.

US Patent:

20140072008, Mar 13, 2014

Filed:

Sep 13, 2012

Appl. No.:

13/614496

Inventors:

Andrei Faraon - Menlo Park CA, US
Charles M. Santori - Palo Alto CA, US
Raymond G. Beausoleil - Redmond WA, US

International Classification:

H01S 5/02
H01S 5/04

US Classification:

372 4501, 372 4401, 372 69

Abstract:

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.