International Business Machines Corporation

Jsr Corporation

Joseph Latone

Brandon Z Frank

Mario Motta

Stephen Peter Wood

Dmitri Maslov

Sergey Bravyi

Gavin O Jones

Ivano Tavernelli

Panagiotis Barkoutsos

Yuya Jeremy Ong

Pauline Ollitrault

Edward Oliver Pyzer-Knapp

Yuya Onishi

Barbara Anne Jones

Systems and techniques that facilitate efficient synthesis of optimal multi-qubit Clifford circuits are provided. In various embodiments, a system can receive as input a number n representing a quantity of qubits. In various instances, the system can generate, via a cost-invariant reduction function, as output a library of different n-qubit canonical representatives that respectively correspond to different cost-invariant equivalence classes of n-qubit Clifford group elements. In various embodiments, a system can receive as input a first Clifford group element. In various aspects, the system can search a database of canonical representatives, wherein different canonical representatives in the database respectively correspond to different cost-invariant equivalence classes of Clifford group elements. In various cases, the system can identify based on the search a second Clifford group element that implements the first Clifford group element and that has a lower entangling-gate cost than the first Clifford group element.

Efficient synthesis of optimal multi-qubit Clifford circuits

Systems, computer-implemented methods, and computer program products to facilitate generalization of a quantum imaginary time evolution process and simulation by tensor networks are provided. According to an embodiment, a system can comprise a processor that executes computer executable components stored in memory. The computer executable components can comprise a universal component that generalizes a quantum imaginary time evolution process to provide a quantum imaginary time evolution ansatz process. The computer executable components can further comprise a simulation component that applies the quantum imaginary time evolution ansatz process to one or more general multi-body quantum systems.

Generalization of a quantum imaginary time evolution process and simulation by tensor networks

Systems and methods that facilitate motion formalism utilizing quantum computing, to compute matrix operators in terms of commutators between qubit operators and measurements on the quantum hardware, wherein the commutators are computed utilizing symbolic calculus. Embodiments reduce computational cost of generalized eigenvalue synthesis relying on symbolic calculus and parallelization. Embodiments disclosed herein can also develop estimators of excited-states properties, considering constants of motion (e.g. spin) and non-constants of motions (e.g. dipoles, density matrices).

System-based extension of qEOM algorithm for quantum computation of excited-state properties

An instant operation may include one or more of creating a smart contract identifying content and review requirements for performing a review of the content, signing and validating the smart contract, storing the smart contract in a blockchain, receiving content review feedback from one or more reviewers of the content, and amending the blockchain to include the content review feedback.

Incentive-based crowdvoting using a blockchain

A computer-implemented method according to one embodiment includes receiving, at a mobile device, a magnetic field produced by an audio device, determining, by the mobile device, a location of the audio device relative to the mobile device, utilizing the magnetic field, and performing, by the mobile device, one or more operations, utilizing the location of the audio device relative to the mobile device.

Identifying a location of an audio device relative to a mobile device

A computer-implemented method according to one embodiment includes requesting input from a user of a mobile device, receiving gyroscope data at the mobile device, in response to the requesting, verifying the gyroscope data, and performing one or more actions, in response to the verifying.

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San Francisco, CA, United States of America

Joseph Latone