Experimental observation of entanglement duality for identical particles
arXiv:1408.5190 · doi:10.1088/1367-2630/16/8/083011
Abstract
It was shown recently that entanglement of identical particles has a feature called dualism [Phys. Rev. Lett. 110, 140404 (2013)], which is fundamentally connected with quantum indistinguishability. Here we report an experiment that observes the entanglement duality for the first time with two identical photons, which manifest polarization entanglement when labeled by different paths or path entanglement when labeled by polarization states. By adjusting the mismatch in frequency or arrival time of the entangled photons, we tune the photon indistinguishability from quantum to classical limit and observe that the entanglement duality disappears under emergence of classical distinguishability, confirming it as a characteristic feature of quantum indistinguishable particles.
9 pages, 4 figures
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Cited by in corpus (6)
- Entanglement in indistinguishable particle systems
- Entanglement of Polarization and Orbital Angular Momentum
- Higher-order statistical correlations and mutual information among particles in a quantum well
- Bell measurements as a witness of a dualism in entanglement
- How to observe duality in entanglement of two distinguishable particles?
- Polarization-orbital angular momentum duality assisted entanglement observation for indistinguishable photons