Recently, Pan put forward a quantum dialogue (QD) scheme based on entanglement swapping and Hadamard operation via cavity QED (Int J Theor Phys, 58(2019)1017), and claimed that this scheme is secure. This paper first points out that it runs the risk of information leakage, and then suggests an improvement to remedy this security loophole.

中文翻译：

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基于Cavity QED的纠缠交换和Hadamard操作的量子对话改进

最近，Pan 提出了一种基于纠缠交换和基于腔 QED 的 Hadamard 操作的量子对话（QD）方案（Int J Theor Phys, 58(2019)1017），并声称该方案是安全的。本文首先指出它存在信息泄露的风险，然后提出改进措施以弥补这一安全漏洞。