Average entropy of a subsystem.
نویسنده
چکیده
If a quantum system of Hilbert space dimension mn is in a random pure state, the average entropy of a subsystem of dimension m ≤ n is conjectured to be S m,n = mn k=n+1 1 k − m−1 2n and is shown to be ≃ ln m − m 2n for 1 ≪ m ≤ n. Thus there is less than one-half unit of information, on average, in the smaller subsystem of a total system in a random pure state.
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ورودعنوان ژورنال:
- Physical review letters
دوره 71 9 شماره
صفحات -
تاریخ انتشار 1993