Lower Bound for entanglement cost of antisymmetric states

Details Lower Bound for entanglement cost of antisymmetric states Lower Bound for entanglement cost of antisymmetric states

2002-03-08

arxiv.org/abs/quant-ph/0203039v1

Physics

Quantum Physics

6 pages, no figure

Scientific paper

This report gives a lower bound of entanglement cost for antisymmetric states of bipartite d-level systems to be log_2 (d/(d-1)) ebit (for d=3, E_c >= 0.585...). The paper quant-ph/0112131 claims that the value is equal to one ebit for d=3, since all of the eigenvalues of reduced matrix of any pure states living in N times tensor product of antisymmetric space is not greater than 2^(-N) thus the von Neumann entropy is not less than N, but the proof is not true. Hence whether the value is equal to or less than one ebit is not clear at this moment.

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