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The Large-Scale Cultivation of Nematodes to Study Their Collective Behaviors
Published on: August 25, 2023
Demonstration of local expansion toward large-scale entangled webs
Toshiyuki Tashima1, Tsuyoshi Kitano, Sahin Kaya Ozdemir
1Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
Abstract:
We demonstrate an optical gate that increases the size of polarization-based W states by accessing only one of the qubits. Using this gate, we have generated three-photon and four-photon W states with fidelities 0.836 ± 0.042 and 0.784 ± 0.028, respectively. We also confirmed the existence of pairwise entanglement in every pair of qubits, including the one that was left untouched by the gate. The gate is applicable to any size of W states and hence is a universal tool for expanding entanglement.
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