论文标题
关于通过连续可变损耗通道传送离散变量Qubit
On the Teleportation of Discrete Variable Qubits Via Continuous Variable Lossy Channels
论文作者
论文摘要
连续变化（CV）量子状态的光允许转移离散变量（DV）光子乘数。这样的操作在混合量子网络的领域很有用。然而，众所周知，通过高斯CV资源通道对DV量子的传送在通道损失下受到严重限制，并且超出经典限制的传送忠诚度超过了超过0.5 dB的较小阈值的损失。在这项工作中，我们提出了一种新的非确定性传送协议，该协议将高斯简历资源通道与钟形状态测量的改良形式结合在一起，可容纳DV-Qubit Fidelity，超出了经典的频道损失，最高为20〜dB。除了这一数量级的改善之外，我们还展示了在CV资源渠道上使用非高斯操作的使用如何导致DV Qubition Fidelity接近任何通道损失的统一性。
The Continuous-Variable (CV) quantum state of light allows for the teleportation of a Discrete-Variable (DV) photonic qubit. Such an operation is useful in the realm of hybrid quantum networks. However, it is known that the teleportation of a DV qubit via a Gaussian CV resource channel is severely limited under channel loss, with a teleportation fidelity beyond the classical limit unattainable for losses exceeding a small threshold of 0.5 dB. In this work, we present a new non-deterministic teleportation protocol that combines a Gaussian CV resource channel with a modified form of the Bell State Measurement that accommodates a DV-qubit fidelity beyond the classical limit for channel losses up to 20~dB. Beyond this orders of magnitude improvement, we also show how the use of non-Gaussian operations on the CV resource channel can lead to a DV-qubit fidelity approaching unity for any channel loss.
