Experimental observation of an entire family of four-photon entangled states
Witlef Wieczorek, Christian Schmid, Nikolai Kiesel, Reinhold Pohlner,, Otfried G\"uhne, Harald Weinfurter
TL;DR
This paper demonstrates a versatile linear optical setup capable of observing a wide family of four-photon entangled states, enhancing flexibility over traditional methods and including states crucial for quantum information processing.
Contribution
Introduces a single experimental setup that can generate and observe an entire family of four-photon entangled states, surpassing previous fixed-configuration approaches.
Findings
Successfully observed multiple four-photon entangled states
The setup is adaptable for various entangled states
Potential applications in quantum information protocols
Abstract
A single linear optical set-up is used to observe an entire family of four-photon entangled states. This approach breaks with the inflexibility of present linear-optical set-ups usually designed for the observation of a particular multi-partite entangled state only. The family includes several prominent entangled states that are known to be highly relevant for quantum information applications.
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