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Testable signatures of quantum non-locality in a two-dimensional chiral p-wave superconductor

Sumanta Tewari·Chuanwei Zhang·S. Das Sarma·Chetan Nayak·Dung-Hai Lee
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Abstract

A class of topological excitations -- the odd-winding-number vortices -- in a spinless 2D chiral p-wave $(p_x+ip_y)$ superconductor trap Majorana fermion states in the vortex cores. For a dilute gas of such vortices, the lowest energy \textit{fermionic} eigenstates are intrinsically non-local. We predict two testable signatures of this unusual quantum non-locality in quasiparticle tunneling experiments. We discuss why the associated teleportation-like phenomenon does not imply the violation of causality.

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Sumanta Tewari, Chuanwei Zhang, S. Das Sarma, Chetan Nayak, Dung-Hai Lee. 2007-12-05. Testable signatures of quantum non-locality in a two-dimensional chiral p-wave superconductor. https://doi.org/10.1103/physrevlett.100.027001

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