Victor Leland Acosta

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:

20180310880, Nov 1, 2018

Filed:

Jul 3, 2018

Appl. No.:

16/026348

Inventors:

- Mountain View CA, US
Vikram Singh Bajaj - Mountain View CA, US
Victor Marcel Acosta - San Francisco CA, US
Tamara Lynn Troy - San Francisco CA, US

International Classification:

A61B 5/00
A61B 5/1455

Abstract:

Optical measurement of physiological parameters with wearable devices often includes measuring signals in the presence of significant noise sources. These noise sources include, but are not limited to, noise associated with: variable optical coupling to skin or tissue, variations in tissue optical properties with time due to changes in humidity, temperature, hydration, variations in tissue optical properties between individuals, variable coupling of ambient light sources into detectors, and instrument and detector noise, including electrical noise, radio frequency or magnetic interference, or noise caused by mechanical movement of the detector or its components. The present disclosure includes devices and methods configured to produce representations of the raw data in which noise, broadly defined, is separated from the data of interest. The disclosed devices and methods may include subtracting or calibrating out these noise sources and other spurious fluctuations in wearable devices with optical sensors.

US Patent:

20180316880, Nov 1, 2018

Filed:

Jul 5, 2018

Appl. No.:

16/027786

Inventors:

- Mountain View CA, US
Victor Marcel Acosta - Mountain View CA, US
Andrew Homyk - Mountain View CA, US

International Classification:

H04N 5/369
G02B 5/18
B82Y 20/00
G02B 1/00
G02B 27/28
G02B 27/10

Abstract:

Systems and methods are described that relate to an optical system including an image sensor optically-coupled to at least one nanophotonic element. The image sensor may include a plurality of superpixels. Each respective superpixel of the plurality of superpixels may include at least a respective first pixel and a respective second pixel. The at least one nanophotonic element may have an optical phase transfer function and may include a two-dimensional arrangement of sub-wavelength regions of a first material interspersed within a second material, the first material having a first index of refraction and the second material having a second index of refraction. The nanophotonic element is configured to direct light toward individual superpixels in the plurality of superpixels, and to direct light toward the first or second pixel in each individual superpixel based on a wavelength dependence or a polarization dependence of the optical phase transfer function.

US Patent:

20170000375, Jan 5, 2017

Filed:

Jul 1, 2015

Appl. No.:

14/788882

Inventors:

- Mountain View CA, US
Vikram Singh Bajaj - Mountain View CA, US
James Michael Higbie - Palo Alto CA, US
Victor Marcel Acosta - Mountain View CA, US
Michael Brundage - Mountain View CA, US
Chinmay Belthangady - Mountain View CA, US

International Classification:

A61B 5/05
A61B 5/145

Abstract:

Wearable devices configured to detect the presence, concentration, number, or other properties of nanoparticles disposed in subsurface vasculature of a person are provided. The wearable devices are configured to magnetize the nanoparticles at an upstream location of subsurface vasculature and to detect, using a magnetometer, magnetic fields produced by the magnetized nanoparticles at a downstream location of subsurface vasculature. In some embodiments, the nanoparticles are configured to bind to an analyte of interest and detected properties of the magnetized nanoparticles can be used to determine the presence, concentration, or other properties of the analyte. Detecting magnetic fields produced by the magnetized nanoparticles can include detecting the fields directly, detecting an effect of the magnetic fields on nuclear magnetic spins of atoms proximate the magnetized nanoparticles, producing a time-varying magnetic field and detecting a time-varying magnetic field responsively produced by the magnetized nanoparticles, or some other method(s).

US Patent:

20160353039, Dec 1, 2016

Filed:

May 27, 2016

Appl. No.:

15/167107

Inventors:

- Mountain View CA, US
Victor Marcel ACOSTA - Mountain View CA, US
Andrew HOMYK - Mountain View CA, US

International Classification:

H04N 5/369
H01L 27/146
G02B 27/10
G02B 27/28
G02B 1/00
B82Y 20/00

Abstract:

Systems and methods are described that relate to an optical system including an image sensor optically-coupled to at least one nanophotonic element. The image sensor may include a plurality of superpixels. Each respective superpixel of the plurality of superpixels may include at least a respective first pixel and a respective second pixel. The at least one nanophotonic element may have an optical phase transfer function and may include a two-dimensional arrangement of sub-wavelength regions of a first material interspersed within a second material, the first material having a first index of refraction and the second material having a second index of refraction. The nanophotonic element is configured to direct light toward individual superpixels in the plurality of superpixels, and to direct light toward the first or second pixel in each individual superpixel based on a wavelength dependence or a polarization dependence of the optical phase transfer function.

US Patent:

20160296145, Oct 13, 2016

Filed:

Apr 1, 2016

Appl. No.:

15/088832

Inventors:

- Mountain View CA, US
Vasiliki Demas - San Jose CA, US
Victor Marcel Acosta - Mountain View CA, US
James Higbie - Palo Alto CA, US
John David Perreault - Mountain View CA, US

International Classification:

A61B 5/145
A61B 5/05

Abstract:

Wearable devices configured to detect the presence, concentration, number, or other properties of magnetic nanoparticles disposed in subsurface vasculature of a person are provided. The wearable devices are configured to detect, using one or more magnetometers, magnetic fields produced by the magnetic nanoparticles. In some embodiments, the magnetometer(s) are atomic magnetometers. In some embodiments, the wearable devices include magnets or other means to magnetize the magnetic nanoparticles. In some embodiments, the wearable devices produce a time-varying magnetic field, and the magnetometer(s) are configured to detect a time-varying magnetic field responsively produced by the magnetic nanoparticles. In some embodiments, the magnetic nanoparticles are configured to bind to an analyte of interest and detected properties of the magnetic nanoparticles can be used to determine the presence, concentration, or other properties of the analyte.

US Patent:

20150382105, Dec 31, 2015

Filed:

Jun 30, 2014

Appl. No.:

14/319182

Inventors:

- Mountain View CA, US
Vikram Singh Bajaj - Mountain View CA, US
Victor Marcel Acosta - San Francisco CA, US
Tamara Lynn Troy - San Francisco CA, US

International Classification:

H04R 3/00
A61B 5/00
A61B 5/1455

Abstract:

Optical measurement of physiological parameters with wearable devices often includes measuring signals in the presence of significant noise sources. These noise sources include, but are not limited to, noise associated with: variable optical coupling to skin or tissue, variations in tissue optical properties with time due to changes in humidity, temperature, hydration, variations in tissue optical properties between individuals, variable coupling of ambient light sources into detectors, and instrument and detector noise, including electrical noise, radio frequency or magnetic interference, or noise caused by mechanical movement of the detector or its components. The present disclosure includes devices and methods configured to produce representations of the raw data in which noise, broadly defined, is separated from the data of interest. The disclosed devices and methods may include subtracting or calibrating out these noise sources and other spurious fluctuations in wearable devices with optical sensors.