Virtual quantum subsystems.


The physical resources available to access and manipulate the degrees of freedom of a quantum system define the set A of operationally relevant observables. The algebraic structure of A selects a preferred tensor product structure, i.e., a partition into subsystems. The notion of compoundness for quantum systems is accordingly relativized. Universal control over virtual subsystems can be achieved by using quantum noncommutative holonomies

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@article{Zanardi2001VirtualQS, title={Virtual quantum subsystems.}, author={Paolo Zanardi}, journal={Physical review letters}, year={2001}, volume={87 7}, pages={077901} }