Virtual Quantum Subsystems
Abstract
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
 Publication:

Physical Review Letters
 Pub Date:
 August 2001
 DOI:
 10.1103/PhysRevLett.87.077901
 arXiv:
 arXiv:quantph/0103030
 Bibcode:
 2001PhRvL..87g7901Z
 Keywords:

 Quantum Physics
 EPrint:
 Presentation improved, to appear in PRL. 4 Pages, RevTeX