标题： 爱因斯坦1927年思想实验：如何完成它并测量空间扩展光子的坍缩时间 显示英文标题

标题： Einstein's 1927 gedanken experiment: how to complete it and measure the collapse time of a spatially spread photon

摘要： 在著名的1927年索尔维会议上，爱因斯坦讨论了一个思想实验，涉及一个光子通过孔径衍射并照射到屏幕上的情况。 他设计了这个例子来支持德布罗意的引导波假设，以及他本人关于量子力学对物理现实描述不完整的观点。 爱因斯坦的例子部分实现过，但由于实际原因，完整的实验尚未进行。 在这里，我将描述如何用易于获取的设备来实现它。 该设置将能够测试赫尔维格和克劳斯关于量子态协变约化的假说。 显示英文摘要

摘要： In the famous Solvay 1927 conference, Einstein discussed a gedanken experiment involving a single photon diffracted at an aperture and impinging on a screen. He devised the example to support De Broglie's hypothesis of the pilot wave, and his own ideas on the incompleteness of the description of physical reality provided by Quantum Mechanics. Partial realizations of Einstein's example have been performed, but the complete experiment has not been attempted (for good practical reasons) yet. Here I describe how to do it with accessible means. The setup will make possible to test Hellwig and Kraus postulate of covariant reduction of the quantum state.