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arXiv · 1601.02943

Experimental Test of Entangled Histories

Jordan Cotler·Lu-Ming Duan·Pan-Yu Hou·Frank Wilczek·Da Xu·Zhang-Qi Yin·Chong Zu
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Abstract

We propose and demonstrate experimentally a scheme to create entangled history states of the Greenberger-Horne-Zeilinger (GHZ) type. In our experiment, the polarization states of a single photon at three different times are prepared as a GHZ entangled history state. We define a GHZ functional which attains a maximum value $1$ on the ideal GHZ entangled history state and is bounded above by $1/16$ for any three-time history state lacking tripartite entanglement. We have measured the GHZ functional on a state we have prepared experimentally, yielding a value of $0.656\pm 0.005$, clearly demonstrating the contribution of entangled histories.

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Jordan Cotler, Lu-Ming Duan, Pan-Yu Hou, Frank Wilczek, Da Xu, Zhang-Qi Yin, Chong Zu. 2016-01-12. Experimental Test of Entangled Histories. https://doi.org/10.1016/j.aop.2017.09.004

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