Entanglement Cost of Antisymmetric States and Additivity of Capacity of Some Quantum Channel
Keiji Matsumoto, Fumitaka Yura
Abstract
We study the entanglement cost of the states in the contragredient space, which consists of (d-1) d-dimensional systems. The cost is always 2 (d-1) ebits when the state is divided into bipartite d (d)d-2. Combined with the arguments in Matsumoto02, additivity of channel capacity of some quantum channels is also shown.
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