Simple forms of SLOCC equivalent four-qubit \c{hi} state

Abstract

Some simple structure of maximally four-qubit state is presented. Using stochastic local operations and classical communication (SLOCC) invariants, it is can be shown those simple structure of maximally four-qubit state is SLOCC equivalent to four-qubit \c{hi} state.

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• Secure quantum key distribution network with Bell states and local unitary operations
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• Monogamy of entanglement of formation
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