We describe a simple way of characterizing the average fidelity between a unitary (or anti-unitary) operator and a general operation on a single qubit, which only involves calculating the fidelities for a few pure input states, and discuss possible applications to experimental techniques including nuclear magnetic resonance (NMR). (C) 2002 Elsevier Science B.V. All rights reserved.
|Number of pages||3|
|Journal||Physics Letters A|
|Publication status||Published - 4 Mar 2002|