Hierarchical quantum communication

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...

Hierarchical simulation of quantum circuits

The focus of the present project is to develop the fundamentals of quantum circuit modeling. Quantum circuit modeling will enable us to describe the integration of quantum nanodevices into circuits and the simulation of the circuit as a whole for novel applications. These models are essential if one is to anticipate novel computing architectures where molecular devices may function far differen...

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...

Optimizing quantum communication

As quantum computing moves closer to real-world application, engineers are considering how to meet the challenge of transmitting quantum information faithfully down long, noisy optical fibers. The fidelity with which an entangled photon pair can be sent down a fiber decreases exponentially with distance, requiring repeater nodes spaced 10 km apart. Liang Jiang et al. report an approach to findi...