Quantum teleportation is the ability to instantaneously transmit quantum information over vast distances, with scientists having previously used it to send information from Earth to an orbiting satellite over 870 miles away. In a recent study, Dr. Alexis Kirke at the University of Plymouth describes how he used a system called MIq (Multi-Agent Interactive qgMuse), where an IBM quantum computer executes a methodology called Grover's Algorithm, to create dynamic solving of musical logical rules which, for example, could prevent dissonance or keep to ¾ instead of common time.
Discovered by Lov Grover at Bell Labs in 1996, Grover's Algorithm was the second main quantum algorithm after Shor's algorithm and gave a huge advantage over traditional computing. It is significantly faster than any classical computer algorithm, and Dr Kirke said that speed was essential because there is actually no way to transmit quantum information other than through teleportation. The result was qHMAS, a Quantum Hybrid Multi-agent System architecture.
Citation: Alexis Kirke, 'Testing a hybrid hardware quantum multi-agent system architecture that utilizes the quantum speed advantage for interactive computer music', Journal of New Music Research, DOI: 10.1080/09298215.2020.1749672
The result was that when played the theme from "Game of Thrones" on the piano, the computer - a 14-qubit machine housed at IBM in Melbourne - rapidly generated accompanying music that was transmitted back in response.
"At the moment there are limits to how complex a real-time computer jamming system can be," notes Kirke. "The number of musical rules that a human improviser knows intuitively would simply take a computer too long to solve to real-time music. Shortcuts have been invented to speed up this process in rule-based AI music, but using the quantum computer speed-up has not be tried before. So while teleportation cannot move information faster than the speed of light, if remote collaborators want to connect up their quantum computers - which they are using to increase the speed of their musical AIs - it is 100% necessary. Quantum information simply cannot be transmitted using normal digital transmission systems."
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