Hi,
when I tried to install this via:
(*Note you need Mathematica version 12.3 or higher*)
PacletUninstall/@PacletFind["Quantum*"];
PacletInstall["Wolfram__QuantumFramework"]
Needs["Wolfram`QuantumFramework`"]
Mathematica (12.3) returns:
PacletInstall::notavail: No paclet named Wolfram__QuantumFramework is available for download from any currently enabled paclet sites.
Regards
Kuba