Pushing the Limit Caused by Qubits Distinguishing Errors for High-Qubit-Rate Quantum Communication
Weidong Tang, Sixia Yu · arXiv (Cornell University) · 2016
Two-party or multi-party quantum communication at a high qubit rate faces several shortcomings such as the indistinguishability of some partly overlapping signals from one sender or different senders, the channel noises, and so on. Based on the encoded quantum communication protocol, an unconventional scheme is presented to overcome the indistinguishability problem of the encoded qubits effectively, leading to a higher qubit-rate compared with the un-encoded cases. It can be regarded as a combination of an entanglement swapping technique and a quantum error-correcting scheme, which also provides us a new way of thinking for improving other technologies related to the temporal resolution issue. Besides, from quantum error correction's point of view, our technique can also be regarded as a method to deal with some nonlocal errors, which may facilitate the relevant research in this field.