Harvard College

Massachusetts Institute of Technology

California Institute of Technology

Magiq Technologies, Inc.

University of California

Columbia University

University System of Maryland

Government of the United States of America, As Represented by the Secretary of Commerce

Element Six Gmbh

Element Six Technologies Limited

Mikhail D Lukin

Soonwon Choi

Hongkun Park

Alexander Keesling Contreras

Ahmed Omran

Hannes Bernien

Harry Jay Levine

Donggyu Kim

Vladan Vuletic

Norman Y Yao

Alexander S Zibrov

Shengtao Wang

Leo Zhou

Dirk Robert Englund

Marko Loncar

Ronald Lee Walsworth

Peter Christian Maurer

Ruffin E Evans

Jacob M Taylor

Manuel Endres

Trond Andersen

Hannes Pichler

Sylvain Schwartz

Markus Greiner

Liang Jiang

Philip Kim

Amir Yacoby

Mihir Keshav Bhaskar

Luming Duan

Peter Zoller

Georg Kucsko

Nathalie De Leon

Bo Loren Dwyer

Javier Sanchez

Ignacio Cirac

Lilian I Childress

Igor Lovchinsky

Brendan John Shields

Denis D Sukachev

Alp Sipahigil

Christian Thieu Nguyen

Matthew Lee Markham

Robert C Devlin

Mohammad Hafezi

Jonathan Hodges

David Patterson

Alexander Arthur High

Ian Robert Christen

Patrick Maletinsky

Alastair Douglas Stacey

Michael J Burek

Vladimir Manucharyan

Joshua Ramette

Eugene Demler

Paola Cappellaro

Kartiek Agarwal

Elana K Urbach

Hengyun Zhou

Bartholomeus Machielse

David S Levonian

Ryan J Gelly

Giovanni Scuri

Dominik S Wild

Susanne F Yelin

Anders S Sorensen

Helena Knowles

Minako Kubo

Zachary Vendeiro

Rivka Bekenstein

Iris Cong

Renate Landig

Shimon Jacob Kolkowitz

Arthur Safira

Quirin P Unterreithmeier

Ralf Riedinger

Joonhee Choi

Alexander Sushkov

Nicholas Chisholm

Yiwen Chu

Andrey Sushko

Hyun Ji Noh

Birgit Judith Maria Hausmann

Alexey V Gorshkov

Geza Giedke

Juan Ignacio Cirac

Wenchao Xu

Tamara Sumarac

Dirk R Englund

Aditya V Venkatramani

Valentin Kluesener

Sergio H Cantu

Systems and methods for quantum convolutional neural networks are described. Systems and methods can apply convolving and pooling layers to input qudits. The qudits can be measured to identify information about the input qudits. Systems and methods can also apply quantum convolutional neural network encoding and decoding techniques for quantum error correction.

Quantum convolutional neural networks

A system for optically modulating a plurality of optical channels includes a power delivery module adapted to convert a coherent light beam into a plurality of optical channels, at least one optical modulator, optically coupled to the power delivery module, the at least one optical modulator adapted to optically modulate each of the plurality of the optical channels, and a vacuum chamber having a trapping plane therein, the vacuum chamber adapted to generate an addressable array of trapped particles at the trapping plane, wherein each of the plurality of optical channels is optically coupled to at least one of the trapped particles of the addressable array.

System and method for multiplexed optical addressing of atomic memories

An optical device useful for spatial light modulation. The device comprises: a semiconductor layer having a first surface and a second surface, the semiconductor having an electric field-dependent resonance wavelength; a first electrode electrically connected to the semiconductor layer; a first insulating layer adjacent to the first surface of the semiconductor layer, and a second insulating layer adjacent to the second surface of the semiconducting layer, the first and the second insulating layers each being optically transparent at the resonance wavelength; a first group of at least one gate electrodes disposed adjacent to the first insulating layer, and a second group of at least one gate electrodes disposed adjacent to the second insulating layer, each gate electrode being at least 80% optically transparent at the resonance wavelength; wherein the first and the second groups of gate electrodes, taken together, form at least two regions in the semiconductor layer, an electrostatic field in each of the at least two regions being independently controllable by application of voltage to the first and the second groups of gate electrodes, the at least two regions abutting each other along at least one boundary.

Fast spatial light modulator based on atomically thin reflector

Systems and methods relate to selectively arranging a plurality of qubits into a spatial structure to encode a quantum computing problem. Exemplary arrangement techniques can be applied to encode various quantum computing problems. The plurality of qubits can be driven according to various driving techniques into a final state. The final state can be measured to identify an exact or approximate solution to the quantum computing problem.

Quantum computing for combinatorial optimization problems using programmable atom arrays

A quantum computer uses interactions between atomic ensembles mediated by an optical cavity mode to perform quantum computations and simulations. Using the cavity mode as a bus enables all-to-all coupling and execution of non-local gates between any pair of qubits. Encoding logical qubits as collective excitations in ensembles of atoms enhances the coupling to the cavity mode and reduces the experimental difficulty of initial trap loading. By using dark-state transfers via the cavity mode to enact gates between pairs of qubits, the gates become insensitive to the number of atoms within each collective excitation, making it possible to prepare an array of qubits through Poissonian loading without feedback.

All-to-all coupled quantum computing with atomic ensembles in an optical cavity

Systems and methods relate to arranging atoms into 1D and/or 2D arrays; exciting the atoms into Rydberg states and evolving the array of atoms, for example, using laser manipulation techniques and high-fidelity laser systems described herein; and observing the resulting final state. In addition, refinements can be made, such as providing high fidelity and coherent control of the assembled array of atoms. Exemplary problems can be solved using the systems and methods for arrangement and control of atoms.

Neutral atom quantum information processor

Systems and methods are disclosed for making a quantum network node. A plurality of scoring function F values are calculated for an array of at least two photonic crystal cavity unit cells, each having a lattice constant a and a hole having a length Hx and a width Hy. A value of a, a value of Hx, and a value of Hy are selected for which a scoring function value is at a maximum. A waveguide region and the array of at least two photonic crystal cavity unit cells based on the selected values are formed on a substrate. At least one ion between a first photonic crystal cavity unit cell and a second photonic crystal cavity unit cell are implanted and annealed into a quantum defect. A coplanar microwave waveguide is formed on the substrate in proximity to the array of at least two photonic crystal cavity unit cells.

Nanophotonic quantum memory

A method of generating uniform large-scale optical focus arrays (LOT As) with a phase spatial light modulator (SLM) includes identifying and removing undesired phase rotation in the iterative Fourier transform algorithm (IFTA), thereby producing computer-generated holograms of highly uniform LOT As using a reduced number of iterations as compared to a weighted Gerchberg-Saxton algorithm. The method also enables a faster compensation of optical system-induced LOT A intensity inhomogeneity than the conventional IFTA.

Large-scale uniform optical focus array generation with a phase spatial light modulator

Systems and methods are disclosed for controlling nonequilibrium electron transport process and generating phonons in low dimensional materials. The systems can include a conductive sheet sandwiched between a first insulation layer and a second insulation layer; a first electrode conductively coupled to a first end of the conductive sheet; a second electrode conductively coupled to a second end of the conductive sheet; and a current source conductively coupled to the first electrode and the second electrode and configured to pass a current from the first electrode through the conductive sheet to the second electrode such that current generates a drift velocity of electrons in the conductive sheet that is greater than the speed of sound to generate phonons.

System and method of generating phonons

Systems and methods are disclosed for a pulse sequence that reduces disorder and/or interaction effects in spin systems. A protocol can be used to design a pulse sequence that includes altering the frame orientation of the spin system with each electromagnetic pulse in the pulse sequence. The frame orientations during the sequence can conform to certain conditions. The number positive rotations along each axis can be the same as the number negative rotations along the respective axis. The number of rotations along one axis should be the same as the number of rotations along the other axes.

Pulse sequence design protocol

Systems and methods are disclosed for preparing and evolving atomic defects in diamond. Silicon vacancy spins may be cooled to temperatures equal to or below 500 mK to reduce the influence of phonons. The cooling, manipulation, and observation systems may be designed to minimize added heat into the system. A CPMG sequence may be applied to extend coherence times. Coherence times may be extended, for example, to 13 ms.

Extended coherence and single-shot readout of a silicon-vacancy spin in diamond

A method for probing the properties of nanoscale materials, such as 2D materials or proteins, via nanometer-scale nuclear quadrupole resonance (NQR) spectroscopy using individual atom-like impurities in diamond. Coherent manipulation of shallow nitrogen-vacancy (NV) color centers enables the probing of the NQR spectrum of nanoscale ensembles of nuclear spins. Measuring the NQR spectrum at different magnetic field orientations and magnitudes and fitting to a theoretical model allows for the extraction of atomic structural properties of the material with nanoscale resolution.

Nanoscale nuclear quadrupole resonance spectroscopy

In an exemplary embodiment, a structure comprises a plurality of deterministically positioned optically active defects, wherein each of the plurality of deterministically positioned optically active defects has a linewidth within a factor of one hundred of a lifetime limited linewidth of optical transitions of the plurality of deterministically positioned optically active defects, and wherein the plurality of deterministically positioned optically active defects has an inhomogeneous distribution of wavelengths, wherein at least half of the plurality of deterministically positioned optically active defects have transition wavelengths within a less than 8 nm range. In a further exemplary embodiment, method of producing at least one optically active defect comprises deterministically implanting at least one ion in a structure using a focused ion beam; heating the structure in a vacuum at a first temperature to create at least one optically active defect; and heating the structure in the vacuum at a second temperature to remove a plurality of other defects in the structure, wherein the second temperature is higher than the first temperature.

Implanted vacancy centers with coherent optical properties

Growing community of inventors

Cambridge, MA, United States of America

Mikhail D Lukin