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Nonlocal Generalized Quantum Measurements of Spin Products Without Maximal Entanglement
[article]
2019
arXiv
pre-print
Measuring a nonlocal observable on a space-like separated quantum system is a resource-hungry and experimentally challenging task. Several theoretical measurement schemes have already been proposed to increase its feasibility, using a shared maximally-entangled ancilla. We present a new approach to this problem, using the language of generalized quantum measurements, to show that it is actually possible to measure a nonlocal spin product observable without necessarily requiring a
arXiv:1912.07135v1
fatcat:2zxdv5wwqrfblelat2amwniw7a