Abstract: Systems, computer-implemented methods, and/or computer program products to facilitate noise characterization of a two-qubit unitary are provided. 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 execution component that executes a two-qubit quantum circuit comprising a preparation of an initial state for a two-qubit Pauli operator and an application of one or more circuit layers, wherein each circuit layer comprises an application of a pair of random gates each selected from I, X, Y or Z, application of the two-qubit unitary having a rotation angle modified to have a 50% probability of being each of positive and negative, and another application of the first random gate and the second random gate. A fitting component employs curve fitting of an expectation value resulting from the execution.

Abstract: A system to characterize noise of a quantum gate can comprise a memory that stores, and a processor that executes, computer executable components that perform operations comprising generating a quantum circuit comprising a series of one or more instances of a quantum gate, wherein each instance is bounded by a pair of Pauli gates comprising two of the same bounding Pauli gate, selecting, separately for each instance, and employing a partial randomness, the bounding Pauli gate to employ, selecting an initial Pauli gate as Pi from a state-based set of Pauli gates where Pi and Pj?(A?B)Pi both commute with a rotation axis A?B of the quantum gate, wherein A, B?{X, Y, Z}, and, characterizing the noise based on one or more parameters of a curve, to which an expectation value, resulting from (i) a measurement of execution of the quantum circuit and (ii) readout twirling of the initial Pauli gate, is fitted.

Abstract: A system to characterize noise of a quantum gate can comprise a memory that stores, and a processor that executes, computer executable components that perform operations comprising generating a quantum circuit comprising one or more instances of a quantum gate of interest, and that generates the quantum circuit having each instance of the quantum gate of interest being bounded by a pair of Pauli gates, wherein each pair of Pauli gates comprises two of the same bounding Pauli gate, inserting, according to a determined probability, an initial Pauli gate, that is based on an initial quantum state of the quantum circuit, into the quantum circuit prior to the one or more instances, and, based on one or more parameters of a curve, to which an expectation value, resulting from a measurement outcome of execution of the quantum circuit, is fitted, generating an element characterizing the noise.

Abstract: Systems, computer program products and/or computer-implemented methods described herein relates to in-process error mitigation by shaping quantum channels. A system can comprise a memory that stores computer executable components and a processor that executes the computer executable components, which can comprise a modification component that replaces a first channel of an initial quantum circuit with a second channel that represents the first channel, an insertion component that inserts into the initial quantum circuit a pair of Pauli gates bounding the second channel, resulting in a modified quantum circuit, wherein the pair of Pauli gates are based on Pauli transfer matrix elements of the first channel and the second channel, an execution component that executes the modified quantum circuit at a quantum processor resulting in a measurement outcome that is error mitigated.

Abstract: Systems, computer-implemented methods, and/or computer program products to facilitate noise characterization of a two-qubit unitary are provided. 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 execution component that executes a two-qubit quantum circuit comprising a preparation of an initial state for a two-qubit Pauli operator and an application of one or more circuit layers, wherein each circuit layer comprises an application of a pair of random gates each selected from I, X, Y or Z, application of the two-qubit unitary having a rotation angle modified to have a 50% probability of being each of positive and negative, and another application of the first random gate and the second random gate. A fitting component employs curve fitting of an expectation value resulting from the execution.

Abstract: A system and a method of sampling from a probability distribution approximating a Boltzmann distribution of an n-spin Ising model includes receiving, by a classical computer, coupling coefficients for spin-spin interactions, field coefficients local to each spin, and a temperature for the n-spin Ising model; selecting a first n-spin configuration; preparing a first n-qubit state on a quantum computer associated with the first n-spin configuration; applying a unitary operator to the first n-qubit state resulting in a second n-qubit state; measuring the second n-qubit state to identify a corresponding second n-spin configuration; calculating, on the classical computer, an acceptance probability to determine whether to replace the first n-spin configuration with the second n-spin configuration or to keep the first n-spin configuration to obtain an output n-spin configuration; and repeating the preparing, applying, measuring and calculating until the output n-spin configuration is sufficiently close to the Boltzm

Abstract: An electrical cabinet for an uninterruptibe power supply (UPS) system includes universal slots that can receive power modules, battery packs, or chargers. The back plane of the slot has connector terminals for battery packs and power modules. The cabinet can be easily reconfigured as desired by changing the number of power modules chargers or battery packs installed. Circuitry is provided that indicates the capacity and operational readiness of the cabinet. This circuitry monitors the battery packs in each slot, and isolates any detected fault to a particular pack.

Abstract: An electrical cabinet for an uninterruptible power supply (UPS) system includes universal slots that can receive power modules, battery packs, or chargers. The back plane of the slot has connector terminals for battery packs and power modules. The cabinet can be easily reconfigured as desired by changing the number of power modules chargers or battery packs installed. Circuitry is provided that indicates the capacity and operational readiness of the cabinet. This circuitry monitors the battery packs in each slot, and isolates any detected fault to a particular battery pack.

Abstract: An electrical cabinet for an uninterruptibe power supply (UPS) system includes universal slots that can receive power modules, battery packs, or chargers. The back plane of the slot has connector terminals for battery packs and power modules. The cabinet can be easily reconfigured as desired by changing the number of power modules chargers or battery packs installed. Circuitry is provided that indicates the capacity and operational readiness of the cabinet. This circuitry monitors the battery packs in each slot, and isolates any detected fault to a particular pack.

Abstract: Systems and methods that retrieve at least one data element from a database include a database and a plurality of predefined query procedures, each predefined query procedure referencing an inquiry path, entering a query having a query procedure and at least one parameter, locating the query procedure and the referenced inquiry path, and using the referenced inquiry path with the parameter to retrieve at least one data element from the database, that is the result of the query. Generally, the system will be used to retrieve data for entity-relation databases (ERDBs) using Structured Query Language (SQL) queries, but that is not required.

Abstract: An electrical cabinet or chassis for an uninterruptible power system (UPS system) includes universal bays or slots that can receive either power modules or battery backs. The back plane of the slot has separate connector terminals for battery packs and power modules. The slots may also receive battery chargers if so desired. All of the slots of a chassis can be utilized to full capacity before another cabinet needs to be employed. The cabinet is also readily adaptable and can be easily reconfigured as desired without particular concern as to the number of power modules or battery packs that are being used. Sensors are provided which indicate the capacity of the cabinet that has been used (e.g. the number of slots still open and not used by a power module or a battery pack).