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Quantifying Coherence and Entanglement via Simple Measurements
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Coherence and entanglement are fundamental properties of quantum systems, promising to power the near future quantum computers, sensors and simulators. Yet, their experimental detection is challenging, usually requiring full reconstruction of the system state. We show that one can extract quantitative bounds to the relative entropy of coherence and the coherent information, coherence and entanglement quantifiers respectively, by a limited number of purity measurements. The scheme is readily implementable with current technology to verify quantum computations in large scale registers, without carrying out expensive state tomography.
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Cited by 1 Pith paper
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A unified approach to quantum resource theories and a new class of free operations
Quantum resource theories are unified by describing each as the automorphism group of a preferred algebraic structure, yielding a new family of complexified free operations for Lie-algebra-based theories.
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