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Sudden death of effective entanglement
Physical Review A. Atomic, Molecular, and Optical Physics
Sudden death of entanglement is a well-known effect resulting from the finite volume of separable states. We study the case when the observer has a limited measurement capability and analyse the effective entanglement, i.e. entanglement minimized over the output data. We show that in the well defined system of two quantum dots monitored by single electron transistors, one may observe a sudden death of effective entanglement when real, physical entanglement is still alive. For certaindoi:10.1103/physreva.81.042308 fatcat:tr7tuntcqzatbmmmeba24axuem