The nodes (computers) are setup the same way with IP addresses, subnet mask, gateway and so on (as with any network), but they all attach to the same network switch.

Researchers at the University of Innsbruck have created a system in which individual qubits — stored in trapped calcium ions ...

A blockchain is an unalterable digital ledger of transactions stored across many independent nodes (computers) in a network, most popularly used to facilitate and record cryptocurrency transactions.