Abstract: Systems and methods that address an optimized method to have a visual representation of qubit stochastic errors. A visual representation is generated of qubit stochastic errors that provides a platform to analyze impact on performance of a quantum circuit to facilitate understanding how noise and error impacts circuit results. Stochastic errors accumulated throughout a circuit are visualized using a gradient overlay.

Abstract: A computer-implemented method of gate-fusion transpilation for a simulation operation includes receiving a quantum circuit data representing a quantum circuit. A first quantum gate manipulates a state of a qubit in the quantum circuit. A measure gate is configured to measure the state of the qubit. The quantum circuit data is compiled into a format compatible with the simulated operation of the quantum circuit. A gate-fusion transpilation procedure based on a configuration of the quantum circuit is retrieved and executed by a computing device when pre-stored in a cache, or is created and executed by the computing device when it is determined there is no pre-storage in cache. The simulated operation of the quantum circuit is performed and a result is output.

Abstract: Techniques for circuit serialization for parameterized-circuit simulation are described. In one example, a system is provided that comprises a processor that executes computer executable components stored in memory. The computer executable components comprise a determination component that determines a first path of computational nodes and a second path of computational nodes of a parameter tree comprising a plurality of computational nodes, wherein the first path of computational nodes and the second path of computational nodes share one or more computational nodes at the beginning of the first path of computational nodes and the second path of computational nodes. The computer executable components further comprise a serialization component that creates a serialized path of computational nodes from the first path of computational nodes and the second path of computational nodes.

Abstract: Systems, computer-implemented methods, and computer program products to facilitate sampling of an operator in a quantum system are provided. 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 a cache component that caches a probability distribution and a quantum state of one or more Kraus operators in a quantum circuit. The computer executable components can further comprise a simulator component that simulates one or more shots of the quantum circuit based on the probability distribution and the quantum state of the one or more Kraus operators. The one or more shots are indicative of one or more algorithm execution instances.

Abstract: Systems, computer-implemented methods, and computer program products to facilitate sampling of an operator in a quantum system are provided. 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 a cache component that caches a probability distribution and a quantum state of one or more Kraus operators in a quantum circuit. The computer executable components can further comprise a simulator component that simulates one or more shots of the quantum circuit based on the probability distribution and the quantum state of the one or more Kraus operators. The one or more shots are indicative of one or more algorithm execution instances.

Abstract: Systems and methods that address an optimized method to have a visual representation of qubit stochastic errors. A visual representation is generated of qubit stochastic errors that provides a platform to analyze impact on performance of a quantum circuit to facilitate understanding how noise and error impacts circuit results. Stochastic errors accumulated throughout a circuit are visualized using a gradient overlay.

Abstract: In some aspects, polarization of a spin ensemble can be increased using cavity-based techniques. A cavity is coupled with a spin ensemble, and a drive field generates an interaction between the cavity and the spin ensemble. In some cases, the interaction increases the polarization of the spin ensemble faster than the thermal (T1) relaxation process or any other thermal polarizing process affecting the spin ensemble. In some cases, polarization is increased by iteratively acting on angular momentum subspaces of the spin ensemble, and mixing the angular momentum subspaces, for example, by a dipolar interaction, a transverse (T2) relaxation process, application of a gradient field, or a combination of these and other processes.

Abstract: In some aspects, polarization of a spin ensemble can be increased using cavity-based techniques. A resonator applies drive field to a spin ensemble in a static magnetic field. The drive field couples the spin ensemble with a cavity, and the coupling increases the polarization of the spin ensemble. In some cases, the cavity is detuned from the spin- resonance frequency, and the Rabi frequency associated with the drive field can be matched to the cavity detuning.

Abstract: In some aspects, polarization of a spin ensemble can be increased using cavity-based techniques. A resonator applies drive field to a spin ensemble in a static magnetic field. The drive field couples the spin ensemble with a cavity, and the coupling increases the polarization of the spin ensemble. In some cases, the cavity is detuned from the spin- resonance frequency, and the Rabi frequency associated with the drive field can be matched to the cavity detuning.

Abstract: In some aspects, polarization of a spin ensemble can be increased using cavity-based techniques. A cavity is coupled with a spin ensemble, and a drive field generates an interaction between the cavity and the spin ensemble. In some cases, the interaction increases the polarization of the spin ensemble faster than the thermal (T1) relaxation process or any other thermal polarizing process affecting the spin ensemble. In some cases, polarization is increased by iteratively acting on angular momentum subspaces of the spin ensemble, and mixing the angular momentum subspaces, for example, by a dipolar interaction, a transverse (T2) relaxation process, application of a gradient field, or a combination of these and other processes.

Abstract: A remote server is arranged to respond to a request from a user terminal for the download of a media file to cause a unique water-marked copy of a media file to be generated and sent to the user terminal. At the same time the remote server is arranged to access a seal server, which causes an electronically sealed record of the transaction to be generated and stored in a download database. Subsequently, if a suspect media file is identified the sealed record provides evidence of the original transaction which led to the water-marked copy of the media file being issued and hence the original source of the unauthorised copy of the file. Control of distributed media files can be enforced by imposing penalties in the event that unauthorised copies corresponding to the distributed water-marked media files are identified.

Abstract: A remote server is arranged to respond to a request from a user terminal for the download of a media file to cause a unique water-marked copy of a media file to be generated and sent to the user terminal. At the same time the remote server is arranged to access a seal server, which causes an electronically sealed record of the transaction to be generated and stored in a download database. Subsequently, if a suspect media file is identified the sealed record provides evidence of the original transaction which led to the water-marked copy of the media file being issued and hence the original source of the unauthorised copy of the file. Control of distributed media files can be enforced by imposing penalties in the event that unauthorised copies corresponding to the distributed water-marked media files are identified.

Abstract: Supporting the implementation and collaboration of a variety of security modules in a distributed computing network. A security interface provides a universal platform for coupling security modules to the network. The various security modules are linked to and provide identifying information to the security interface. The security interface also receives subscription requests used to coordinate which security modules will communicate. When a security event occurs, a message can be generated by the relevant security module. The security interface shares the message with those security modules that have subscribed to the relevant security module. The sharing of security information enables better performance by the entire network security system.

Abstract: Supporting the implementation and collaboration of a variety of security modules in a distributed computing network. A security interface provides a universal platform for coupling security modules to the network. The various security modules are linked to and provide identifying information to the security interface. The security interface also receives subscription requests used to coordinate which security modules will communicate. When a security event occurs, a message can be generated by the relevant security module. The security interface shares the message with those security modules that have subscribed to the relevant security module. The sharing of security information enables better performance by the entire network security system.