Quantum Entanglement of Neutrino Pairs

Abstract

It is practically shown that a pair of neutrinos from tau decay can form a flavor entangled state. With this kind of state we show that the locality constrains imposed by Bell inequality are violated by the quantum mechanics, and an experimental test of this effect is feasible within the earth's length scale. Theoretically, the quantum entanglement of neutrino pairs can be employed to the use of long distance cryptography distribution in a protocol similar to the BB84.

Comments: 7 pages, 5 eps figures; This paper has been withdrawn by the author due to the efficiency of detections