Monday, January 21, 2013

1301.4441 (A. Montina et al.)

Computing the Communication Complexity of Quantum Channels    [PDF]

A. Montina, M. Pfaffhauser, S. Wolf
The communication complexity of a quantum channel is the minimal amount of classical communication required for classically simulating the process of preparation, transmission through the channel, and subsequent measurement of a quantum state. At present, only little is known about this quantity. In this paper, we present a procedure for systematically evaluating the communication complexity of channels in any general probabilistic theory, in particular quantum theory. The procedure is constructive and provides the most efficient classical protocols. We illustrate this procedure by evaluating the communication complexity of a noiseless quantum channel with some finite sets of quantum states and measurements.
View original: http://arxiv.org/abs/1301.4441

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