BLACK HOLES AND QUBITS

Toshiyuki Fujii, Munehiro Nishida, Satoshi Tanda +1 more

Roberto Balbinot, Iacopo Carusotto, Alessandro Fabbri +1 more

Hawking's prediction of thermal radiation by black holes has been shown by Unruh to be expected also in condensed matter systems. We show here that in a black hole-like configuration realized in a BEC this particle-creation does indeed take place and can be unambiguously identified via a characteristic pattern in the density–density correlations. This opens the concrete possibility of the experimental verification of this effect.

Xian-Hui Ge, You-Gen Shen

Quantum non-cloning theorem and a thought experiment are discussed for charged black holes whose global structure exhibits an event and a Cauchy horizon. We take Reissner–Norström black holes and two-dimensional dilaton black holes as concrete examples. The results show that the quantum non-cloning theorem and the black hole complementarity are far from consistent inside the inner horizon. The relevance of this work to non-local measurements is briefly discussed.