Quantum-memory-assisted entropic uncertainty relation with a single nitrogen-vacancy center in diamond

Abstract

The limitation of simultaneous measurements of noncommuting observables can be eliminated when the measured particle is maximally entangled with a quantum memory. We present a proposal for testing this quantum-memory-assisted entropic uncertainty relation in a single nitrogen-vacancy (N-V) center in diamond only by local electronic measurements. As an application, this entropic uncertainty relation is used to witness entanglement between the electron and nuclear spins of the N-V center, which is close to the reach of currently available technology.

3 pages, 3 figures, published version

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Cited by in corpus (6)

• Competitions between quantum correlations in the quantum-memory-assisted entropic uncertainty relation
• Upper bound and shareability of quantum discord based on entropic uncertainty relations
• Quantum-memory-assisted entropic uncertainty relations
• Optimized entropic uncertainty relations for multiple measurements
• Quantifying Quantumness in (A)dS spacetimes with Unruh-DeWitt Detector
• Entropic uncertainty under indefinite causal order and input-output direction