# Controlling dynamical entanglement in a Josephson tunneling junction

Source: [Controlling dynamical entanglement in a Josephson tunneling junction](<https://www.sota2.com/research/paper/68fa36ec1e209131ce8ae0a8>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T22:06:25.659Z

Authors: K. Ziegler

Published: 2016-02-02T14:51:09.000Z

## Abstract

We analyze the evolution of an entangled many-body state in a Josephson tunneling junction. A N00N state, which is a superposition of two complementary Fock states, appears in the evolution with sufficient probability only for a moderate many-body interaction on an intermediate time scale. This time scale is inversely proportional to the tunneling rate. Interaction between particles supports entanglement: The probability for creating an entangled state decays exponentially with the number of non-interacting particles, whereas it decays only like the inverse square root of the number of interacting particles.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1602.00952>)

[PDF](<https://arxiv.org/pdf/1602.00952.pdf>)