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Achieving the Holevo bound via sequential measurements
Holevo bound sequential measurements
2011/3/2
We present a new decoding procedure to transmit classical information in a quantum channel
which, saturating asymptotically the Holevo bound, achieves the optimal rate of the communication line.
lower bound of the first eigenvalue of certain self-adjoint elliptic operators on manifolds containing long necks
lower bound manifolds containing long necks certain self-adjoint elliptic operators
2010/3/5
In this note, under certain regularity and transversality conditions we obtain a sharp lower bound of the first eigenvalue for certain self-adjoint elliptic operators on manifolds with long necks. Thi...