Citation
Abstract
In this article, we review the capacity of a quantum channel for transmitting classical and quantum information, with our primary focus being the context of optical communication. We discuss the necessary trade-offs between the rates of sending both bits and qubits over a quantum channel, and how these rates are affected in the presence of shared entanglement between sender and receiver. We also review several protocols which achieve these rates. Then, shifting our focus to the free-space optical channel, we review common quantum states of photons and methods for modulating information on them. We discuss the capacities associated with these modulation techniques as well as the prospect of feasibly generating and exploiting entanglement to boost the classical capacity of optical free-space communication.
Keywords
Details
- Volume
- 42-210
- Published
- August 15, 2017
- Pages
- 1–38
- File Size
- 1.5 MB