Qubits from Black Holes in M-theory on K3 Surface
  Using M-theory compactification, we develop a three factor separation for the scalar submanifold of N=2 seven dimensional supergravity associated with 2-cycles of the K3 surface. Concretely, we give an interplay between the three scalar submanifold factors and the extremal black holes obtained from M2-branes wrapping such 2-cycles. Then, we show that the corresponding black hole charges are linked to one, two and four qubit systems. 
Adil Belhaj, Zakariae Benslimane, Moulay Brahim Sedra, Antonio Segui
hep-th