Communication over a quantum channel that depends on a quantum state is considered when the encoder has channel side information (CSI) and is required to mask information on the quantum channel state from the decoder. A full characterization is established for the entanglement-assisted masking equivocation region, and a regularized formula is given for the quantum capacity-leakage function without assistance. For Hadamard channels without assistance, we derive single-letter inner and outer bounds, which coincide in the standard case of a channel that does not depend on a state.
翻译:量子信道取决于量子状态,当编码器拥有频道侧面信息(CSI)并被要求从解码器中掩盖量子信道状态信息时,即考虑关于量子信道的通信。为缠绕辅助遮蔽隐蔽区域设定了全面特征,为量子能力泄漏功能设定了常规公式,而没有援助。对于没有援助的哈达马德频道,我们得出单字母内外部界限,这与一个不依赖状态的频道的标准情形相吻合。