Abstract
In this work, we explore the space of quantum states composed of particles. To investigate entanglement resistant to particle loss, we introduce the notion of -resistant states. A quantum state is resistant if it remains entangled after losing an arbitrary subset of particles but becomes separable after losing any number of particles larger than . We establish an analogy to the problem of designing a topological link consisting of rings such that, after cutting any of them, the remaining rings become disconnected. We present a constructive solution to this problem, which allows us to exhibit several -particle states with the desired property of entanglement resistance to particle loss.
5 More- Received 11 September 2019
DOI:https://doi.org/10.1103/PhysRevA.100.062329
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