Parsing a sequence of qubits
Abstract
We develop a theoretical framework for frame synchronization, also known as block synchronization, in the quantum domain which makes it possible to attach classical and quantum metadata to quantum information over a noisy channel even when the information source and sink are frame-wise asynchronous. This eliminates the need of frame synchronization at the hardware level and allows for parsing qubit sequences during quantum information processing. Our framework exploits binary constant-weight codes that are self-synchronizing. Possible applications may include asynchronous quantum communication such as a self-synchronizing quantum network where one can hop into the channel at any time, catch the next coming quantum information with a label indicating the sender, and reply by routing her quantum information with control qubits for quantum switches all without assuming prior frame synchronization between users.
Cite
@article{arxiv.1207.1138,
title = {Parsing a sequence of qubits},
author = {Yuichiro Fujiwara},
journal= {arXiv preprint arXiv:1207.1138},
year = {2013}
}
Comments
11 pages, 2 figures, 1 table. Final accepted version for publication in the IEEE Transactions on Information Theory