arXiv subjects

Cheng-Hao Shi

Publications and source records attributed to Cheng-Hao Shi.

2 recordsLinked to original sources

arXiv2010

Experimental demonstration of photonic entanglement collapse and revival

We demonstrate the collapse and revival features of the entanglement dynamics of different polarization-entangled photon states in a non-Markovian environment. Using an all-optical experimental setup, we show that entanglement can be revived even after it suffers from sudden death. A maximally revived state is shown to violate a Bell's inequality with 4.1 standard deviations which verifies its quantum nature. The revival phenomenon observed in this experiment provides an intriguing perspective on entanglement dynamics.

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arXiv2009

Experimental characterization of entanglement dynamics in noisy channels

The dynamics of entanglement between two photons with one of them passing through noisy quantum channels is characterized. It is described by a simple factorization law which was first theoretically proposed by Konrad {\it et al.} [Nature Phys., 4, 99 (2008)]. Quantum state tomography process is employed to reconstruct the reduced density matrixes of the final states and the corresponding concurrences are calculated. Good fittings between experimental results and theoretical predictions are found, which imply the validity of the general factorization law in the characterization of entanglement dynamics.

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