Electron Localization in Rydberg States

We discuss the possibility of localizing an electron in a highly excited Rydberg state. The second-order correlation emitted photons is tool for determination position. This radiation and, therefore, operators describing acceleration allows partial localization its orbit. function found by approximating transition matrix elements their values classical limit. It shown that correlation, depending on two times, time difference and periodic this argument with period equal to corresponding motion. has sharp maxima large vicinity "perihelion". consecutive approach perihelion point.