Directed quantum communication

Communication for Goal Directed Agents

This paper dis usses some modeling issues on erning the ommuni ation between goal-dire ted agents. In parti ular, the role of performatives in agent ommuni ation is dis ussed. It is argued that the spe i ation of the e e t of performatives, as pres ribed by FIPA, is sometimes too weak or unrealisti . The alternative, proposed in this paper, suggests a two phase modeling of the e e t of the ommu...

Zero-Signal-Power Communication: Zero-Power Classical Communication, Zero-Quantum Quantum Communication and Environmental-Noise Communication

A new physical way of communication, communication by the inherent background noise, is proposed which does not need net energy transfer in the information channel. The communicator devices do dissipate energy however they do not emit net energy into the channel, instead of that, they modulate the parameters of inherent spontaneous fluctuations in the channel. The new method can use two differe...

Quantum walks on directed graphs

We consider the definition of quantum walks on directed graphs. Call a directed graph reversible if, for each pair of vertices (vi, vj), if vi is connected to vj then there is a path from vj to vi. We show that reversibility is a necessary and sufficient condition for a directed graph to allow the notion of a discrete-time quantum walk, and discuss some implications of this condition. We presen...

Quantum Direct Communication

Quantum communication technology

Quantum communication is built on a set of disruptive concepts and technologies. It is driven by fascinating physics and by promising applications. It requires a new mix of competencies, from telecom engineering to theoretical physics, from theoretical computer science to mechanical and electronic engineering. First applications have already found their way into niche markets, and university la...