Probabilistic coding of quantum states
量子物理
2008-07-24 v1
摘要
We discuss properties of probabilistic coding of two qubits to one qutrit and generalize the scheme to higher dimensions. We show that the protocol preservers entanglement between qubits to be encoded and environment and can be also applied to mixed states. We present the protocol which enables encoding of n qudits to one qudit of dimension smaller than the Hilbert space of the original system and then probabilistically but error-free decode any subset of k qudits. We give a formula for the probability of successful decoding.
引用
@article{arxiv.quant-ph/0603244,
title = {Probabilistic coding of quantum states},
author = {Andrzej Grudka and Antoni Wojcik and Mikolaj Czechlewski},
journal= {arXiv preprint arXiv:quant-ph/0603244},
year = {2008}
}