论文标题
使用多模挤压的光态量子密集的编码网络
Quantum Dense Coding Network using Multimode Squeezed States of Light
论文作者
论文摘要
我们提出了一个使用连续变量系统的多模密集编码网络的框架。该协议可扩展到任意数量的模式，而编码为位移，而解码涉及模式通过一系列光束拆分器成对组合后的同源测量值，从而表现出其在实验室中具有当前可用资源的实现的潜力。我们计算分别涉及共享三模式状态的两个和三个发件人的案例的密集编码能力的封闭形式表达。当发件人的模式在编码操作后传输到接收器时，密集的编码能力是按固定平均能量传输的约束计算的。在这两种情况下，我们都使用三模式状态和四模式状态的范式类别证明协议的量子优势。量子优势随着允许从发件人传输到接收器的能量的增加而增加。
We present a framework of a multimode dense coding network with multiple senders and a single receiver using continuous variable systems. The protocol is scalable to arbitrary numbers of modes with the encoding being displacements while the decoding involves homodyne measurements of the modes after they are combined in a pairwise manner by a sequence of beam splitters, thereby exhibiting its potentiality to implement in laboratories with currently available resources. We compute the closed form expression of the dense coding capacity for the cases of two and three senders that involve sharing of three- and four-mode states respectively. The dense coding capacity is calculated with the constraint of fixed average energy transmission when the modes of the sender are transferred to the receiver after the encoding operation. In both the cases, we demonstrate the quantum advantage of the protocol using paradigmatic classes of three- and four-mode states. The quantum advantage increases with the increase in the amount of energy that is allowed to be transmitted from the senders to the receiver.
