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On the Infeasibility of Entanglement Generation in Gaussian Quantum Systems via Classical Control

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3 Author(s)
Nurdin, H.I. ; Res. Sch. of Eng., Australian Nat. Univ., Canberra, ACT, Australia ; Petersen, I.R. ; James, M.R.

This technical note uses a system theoretic approach to show that classical linear time invariant controllers cannot generate steady state entanglement in a bipartite Gaussian quantum system which is initialized in a Gaussian state. The technical note also shows that the use of classical linear controllers cannot generate entanglement in a finite time from a bipartite system initialized in a separable Gaussian state. The approach reveals connections between system theoretic concepts and the well known physical principle that local operations and classical communications cannot generate entangled states starting from separable states.

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Automatic Control, IEEE Transactions on  (Volume:57 ,  Issue: 1 )