International Business Machines Corporation

Google Inc.

Exxonmobil Research and Engineering Company

Don Greenberg

Marco Pistoia

Richard Chen

Jay Michael Gambetta

Giacomo Nannicini

Ali Javadiabhari

Youngseok Kim

Daniel Josef Egger

Douglas T McClure, Iii

Sarah Elizabeth Sheldon

Sumathy Raman

Ivano Tavernelli

Haskell Aaron Garon

Spencer Troy Stober

Tanvi Pradeep Gujarati

Dimitar Vasilev Trenev

Sarah Mostame

Stuart Maxwell Harwood

Anna T Phan

According to an embodiment, a system can comprise a memory that stores computer executable components and a processor that executes the computer executable components stored in the memory. The computer executable components can comprise an extrapolation component that extrapolates a system parameter of a parameter set to determine a starting parameter value of a variational circuit. The computer executable components can further comprise a variational component that determines a system parameter value of the parameter set based on the starting parameter value.

Parameter extrapolation in quantum variational circuits

A hybrid classical-quantum computing device to execute a quantum circuit corresponding to a variational problem, is configured. The configuring further comprises causing the hybrid classical-quantum computing device to execute the quantum circuit by performing an adiabatic progression operation, wherein the adiabatic progression operation comprises increasing the difficulty of the variational problem from a simplified version of the problem to the variational problem.

Adiabatic progression with intermediate re-optimization to solve hard variational quantum problems in quantum computing

Techniques regarding quantum computer error mitigation are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor, operably coupled to the memory, and that can execute the computer executable components stored in the memory. The computer executable components can comprise an error mitigation component that interpolates a gate parameter associated with a target stretch factor from a reference model that includes reference gate parameters for a quantum gate calibrated at a plurality of reference stretch factors.

Stretch factor error mitigation enabled quantum computers

Techniques regarding determining thermodynamic observables of a chemical system are provided. For example, one or more embodiments described herein can include a system, which can comprise a memory that can store computer executable components. The system can also include a processor, operably coupled to the memory, and that can execute the computer executable components stored in the memory. The computer executable components can include a potential energy component that can fit a potential energy function to a computed potential energy surface of a molecule. The computer executable components can also include a vibrational mode component that can compute an intramolecular vibrational mode of the molecule based on the potential energy surface fitted with the potential energy function. Also, the computer executable components can include a partition component that can compute a partition function based on the intramolecular vibrational mode.

Quantum computing thermodynamic observables of a chemical system

A method includes detecting submission of a first quantum circuit for compilation, the first quantum circuit comprising a first set of quantum logic gates; generating a first gate index, the first gate index comprising an ordered table of a subset of the set of quantum logic gates, each quantum logic gate of the subset of quantum logic gates including a corresponding set of qubits acted on by the quantum logic gate; comparing the first gate index with a second gate index to determine a structural equality of the first quantum circuit and the second quantum circuit; and parameterizing, in response to determining a structural equality of the first quantum circuit and the second quantum circuit, a first set of parameters of a second set of quantum logic gates of the second quantum circuit with a second set of parameters of the first set of quantum logic gates.

Incremental generation of quantum circuits

Methods, systems, and apparatus, including an apparatus for preventing data leakage by controlling the availability of user data. In one aspect, a system includes a frontend server that receives digital component requests that each specify a user identifier for a user to which digital component will be provided and provides digital components. A data availability control server receives data specifying a user identifier for a user and controls availability of activity data to digital component providers by identifying, for a given digital component provider, data sets that include a user identifier for the user and are data sets from which the digital component provider is eligible to receive data. The data availability control server selects, from a specified number of the identified data sets, the activity data of the user included in the specified number of identified data sets and provides the selected data to the given digital component provider.

Preventing data leakage

A method of performing unsupervised clustering of data points includes determining a number of qubits to include in a quantum processor based on feature dimensions of each data point. The method includes, for each pair of data points, executing a quantum circuit on a quantum processor having the determined number of qubits. The quantum circuit includes a feature map template circuit parameterized with a first plurality of rotations, a backward feature map template circuit parameterized with a second plurality of rotations, and a measurement circuit that outputs a similarity measure. The method includes creating a similarity matrix based on the similarity measure for each pair of data points, and inputting the similarity matrix to a classical clustering algorithm to cluster the data points. The feature map template circuit and the backward feature map template circuit each use quantum properties of superposition and entanglement of the qubits of the quantum processor.

Unsupervised clustering in quantum feature spaces using quantum similarity matrices

This document describes a content delivery acceleration system including a communication interface configured to communicate with a remote device over a wireless network; a cache; and a controller configured to perform operations including: pre-computing one or more evaluation results for a webpage associated with a selectable network reference of a webpage, caching the one or more pre-computed evaluation results; retrieving, from the cache, the one or more pre-computed evaluation results; and pre-loading of one or more content tags for the one or more digital component slots, with the one or more content tags being preloaded with uniform resource locators (URLs) from which to load the digital components represented in the pre-computed evaluation results.

Growing community of inventors

Teaneck, NJ, United States of America

Don Greenberg