论文标题
密集编码和传送的量子成本
Quantum cost of dense coding and teleportation
论文作者
论文摘要
量子成本是从实际角度评估量子协议质量的关键要素。我们表明，传输经典消息（0,0）时，d维密集编码协议的量子成本等于d+3，在传输其他经典消息时，它等于d+4。它似乎随着维度的线性增长，因此实施有意义。相比之下，高维传送方案的量子成本等于13，这是二维情况的最大值。作为应用程序，我们在四个典型的噪声场景方面建立了密集编码协议的量子成本和忠诚度之间的关系。
The quantum cost is a key ingredient to evaluate the quality of quantum protocols from a practical viewpoint. We show that the quantum cost of d-dimensional dense coding protocol is equal to d+3 when transmitting the classical message (0,0), and that is equal to d+4 when transmitting other classical message. It appears linear growth with the dimension and thus makes sense for implementation. In contrast, the quantum cost of high-dimensional teleportation protocols is equal to 13, which is the maximum value of the cost for the two-dimensional case. As an application, we establish the relation between the quantum cost and fidelity of dense coding protocols in terms of four typical noise scenario.
