论文标题
通过纠缠交换实现量子密集编码的计划
Scheme for realizing quantum dense coding via entanglement swapping
论文作者
论文摘要
量子密集的编码是一种协议，用于通过仅发送一个量子位（qubit）将两个经典的信息从发件人（Alice）传输到远程接收器（BOB）。在本文中，我们提出了一个实验可行的方案，以实现量子密集的编码\ textit {via}纠缠交换，其中包含一定数量的两级原子。正确选择系统参数，例如原子腔联轴器和腔间耦合，可以完美地传输信息。通过在光子晶体腔和超导谐振器的背景下，使用最近实现的实验值证明，信息的高保真度传递是可能的。为了模仿实验瑕疵，考虑了耦合强度和共振频率的障碍。
Quantum dense coding is a protocol for transmitting two classical bits of information from a sender (Alice) to a remote receiver (Bob) by sending only one quantum bit (qubit). In this article, we propose an experimentally feasible scheme to realize quantum dense coding \textit{via} entanglement swapping in a cavity array containing a certain number of two-level atoms. Proper choice of system parameters such as atom-cavity couplings and inter-cavity couplings allows perfect transfer of information. A high fidelity transfer of information is shown to be possible by using recently achieved experimental values in the context of photonic crystal cavities and superconducting resonators. To mimic experimental imperfections, disorder in both the coupling strengths and resonance frequencies is considered.
