When some of the parties of a multipartite entangled pure state are lost, the question arises
whether the residual mixed state is also entangled, in which case the initial entangled pure …

In this work, we explore the space of quantum states composed of N particles. To investigate
entanglement resistant to particle loss, we introduce the notion of m-resistant states. A …

One of the key manifestations of quantum mechanics is the phenomenon of quantum
entanglement. While the entanglement of bipartite systems is already well understood, our …

We identify an effectively decoherence-free class of quantum states, each of which consists
of a “minuscule” and a “large” sector, against local noise. In particular, the content of …

The Schr\" odinger cat state plays a crucial role in quantum theory, and has important
fundamental as well as technological implications, ranging from quantum measurement …