Massachusetts Institute of Technology

Witricity Corporation

Omniguide Communications

Harvard College

Technion Research & Development Foundation Ltd

Omniguide, Inc.

M.i.t.

Marin Soljacic

Aristeidis Karalis

John Dimitris Joannopoulos

Andre B Kurs

Morris P Kesler

Katherine L Hall

Andrew J Campanella

Konrad J Kulikowski

Steven G Johnson

Eric R Giler

David A Schatz

Mihai Ibanescu

Yoel Fink

Yichen Shen

Scott A Skirlo

Peter H Fisher

Bo Zhen

Dirk Robert Englund

Qiang Li

Rafif E Hamam

Mihika Prabhu

Robert Moffatt

Ori Weisberg

Ofer Shapira

Maksim Skorobogatiy

Ivan Celanovic

Torkel Engeness

Jeffrey Scott Herd

Cheryl Marie Sorace-Agaskar

Yi Yang

Peter Bermel

Evan J Reed

Chia Wei Hsu

Nicholas Christopher Harris

Simon Verghese

Steven Alan Jacobs

Jacques Johannes Carolan

Wenjun Qiu

Alejandro W Rodriguez

Ido Kaminer

Ron Fiorello

Volkan Efe

Paul William Juodawlkis

Wesley A King

Lori Pressman

Emilia G Anderson

Michael Ghebrebrhan

Charles Roques-Carmes

Rokan Ahmad

Tena Dubcek

Walker Chan

Adrian Y X Yeng

Ognjen Ilic

Jamison Sloan

Nicholas H Rivera

George Barbastathis

Elefterios Lidorikis

Evelyn N Wang

Peter Thomas Rakich

Erich P Ippen

Suraj Deepak Bramhavar

Li Jing

Boris G Kharas

Hengameh Bagherianlemraski

Josue Lopez

Ling Lu

Jorge Bravo-Abad

Song-Liang Chua

Samuel Kim

Jeongwon Lee

Shanhui Fan

Klavs F Jensen

Gang Paul Chen

Zheng Wang

Alexander Patrick McCauley

Marko Loncar

Herbert Toby Lou

Karl Kimon Berggren

Chiyan Luo

Arunanshu Mohan Roy

Zheng Barton Wang

Mordechai Segev

Lene Vestergaard Hau

Burak Temelkuran

Tairan Wang

Frank Pergal

Steven J Ganem

Bikramjit S Bhatia

Daniel Kraemer

Andrej Lenert

David M Bierman

Erika Ye

Kenneth McEnaney

Phillip Donald Keathley

Liang Jie Wong

Maria Empar Rollano Hijarrubia

Robert Pilawa-Podgurski

Steven E Kooi

John D Joannopolous

Yinan Zhang

A time varying laser which can operate by taking advantage of transitions between time varying quasi-energy levels which are present in the driven system is disclosed. This can allow for laser operation at frequencies which are new, compared to the operation of the laser in absence of time-modulation. It can also allow for a novel mode of operation in which the system provides gain at multiple frequencies simultaneously, in a coherent fashion which is fundamentally different from multi-mode behavior in conventional lasers. Additionally, in systems with sufficiently strong modulation, these principles can lead to lasers which produce gain even in the thermodynamic ground state of the system, leading to a new form of lasing without inversion (LWI). In addition, these techniques have the potential to be used to create lasers at high frequencies (UV-Xray) which have been difficult to achieve via conventional laser mechanisms.

Methods and apparatus for generating coherent light at new frequencies via time varying lasing

A photonic parallel network can be used to sample combinatorially hard distributions of Ising problems. The photonic parallel network, also called a photonic processor, finds the ground state of a general Ising problem and can probe critical behaviors of universality classes and their critical exponents. In addition to the attractive features of photonic networks—passivity, parallelization, high-speed and low-power—the photonic processor exploits dynamic noise that occurs during the detection process to find ground states more efficiently.

Optical Ising machines and optical convolutional neural networks

A radiative cooling device can include a reflector positionable to permit operation during daylight hours.

Passive radiative cooling during the day

An optical neural network is constructed based on photonic integrated circuits to perform neuromorphic computing. In the optical neural network, matrix multiplication is implemented using one or more optical interference units, which can apply an arbitrary weighting matrix multiplication to an array of input optical signals. Nonlinear activation is realized by an optical nonlinearity unit, which can be based on nonlinear optical effects, such as saturable absorption. These calculations are implemented optically, thereby resulting in high calculation speeds and low power consumption in the optical neural network.

Apparatus and methods for optical neural network

Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.

Wireless energy transfer

Described herein are embodiments of a source high-Q resonator, optionally coupled to an energy source, a second high-Q resonator, optionally coupled to an energy drain that may be located a distance from the source resonator. A third high-Q resonator, optionally coupled to an energy drain that may be located a distance from the source resonator. The source resonator and at least one of the second resonator and third resonator may be coupled to transfer electromagnetic energy from said source resonator to said at least one of the second resonator and third resonator.

Wireless non-radiative energy transfer

An integrated optical beam steering device includes a planar Luneburg lens that collimates beams from different inputs in different directions within the lens plane. It also includes a curved (e.g., semi-circular or arced) grating coupler that diffracts the collimated beams out of the lens plane. The beams can be steered in the plane by controlling the direction along which the lens is illuminated and out of the plane by varying the beam wavelength. Unlike other beam steering devices, this device can operate over an extremely wide field of view&#x2014;up to 180&#xb0;&#x2014;without any aberrations off boresight. In other words, the beam quality is uniform in all directions, unlike with aplanatic lenses, thanks to the circular symmetry of the planar Luneburg lens, which may be composed of subwavelength features. The lens is also robust to misalignment and fabrication imperfections and can be made using standard CMOS processes.

Planar Luneburg lens system for two-dimensional optical beam steering

An integrated optical beam steering device includes a planar dielectric lens that collimates beams from different inputs in different directions within the lens plane. It also includes an output coupler, such as a grating or photonic crystal, that guides the collimated beams in different directions out of the lens plane. A switch matrix controls which input port is illuminated and hence the in-plane propagation direction of the collimated beam. And a tunable light source changes the wavelength to control the angle at which the collimated beam leaves the plane of the substrate. The device is very efficient, in part because the input port (and thus in-plane propagation direction) can be changed by actuating only logN of the N switches in the switch matrix. It can also be much simpler, smaller, and cheaper because it needs fewer control lines than a conventional optical phased array with the same resolution.

Methods and systems for optical beam steering

A photonic parallel network can be used to sample combinatorially hard distributions of Ising problems. The photonic parallel network, also called a photonic processor, finds the ground state of a general Ising problem and can probe critical behaviors of universality classes and their critical exponents. In addition to the attractive features of photonic networks&#x2014;passivity, parallelization, high-speed and low-power&#x2014;the photonic processor exploits dynamic noise that occurs during the detection process to find ground states more efficiently.

An apparatus includes at least one conductive layer, an electromagnetic (EM) wave source, and an electron source. The conductive layer has a thickness less than 5 nm. The electromagnetic (EM) wave source is in electromagnetic communication with the at least one conductive layer and transmits a first EM wave at a first wavelength in the at least one conductive layer so as to generate a surface plasmon polariton (SPP) field near a surface of the at least one conductive layer. The electron source propagates an electron beam at least partially in the SPP field so as to generate a second EM wave at a second wavelength less than the first wavelength.

Apparatus and methods for generating electromagnetic radiation

Growing community of inventors

Belmont, MA, United States of America

Marin Soljacic