Spontaneous coherence of atomic states within a metallic slit

Abstract

2) Moscow Engineering-Physical Institute -Moscow 115409, USSR (3) NPO VNIIFTRI -Mendeleevo, Moscow Region 141570, USSR (ricevuto il 7 Maggio 1991; revisionato il 28 Ottobre 1991; approvato il 18 Novembre 1991) ~Let us take a big metallic screen and make in it a small metallic hole.,, M. A. Leontovitch -Talk in a seminarSummary. --It was found that, when metastable hydrogen 2sl/2-atoms pass through a two-electrode atomic interferometer, the yield of 2p-atoms essentially depends on the field direction. This large-scale effect can hardly be understood on the basis of quantum-mechanical concepts on the behaviour of an H-atom in electric field. In further experiments the said effect was shown to be a secondary one, namely, it arises due to transformation of the pure 2Sl/2-state into the (2s-2p)-superposition as H-atoms fly through the interferometer entrance slit.PACS 42.50 -Quantum optics.

The interference of atomic states and mysterious behavior of the 2P-hydrogen atom flying near a metal surface

“…Indeed, I found that a metastable H 2S -atom flying above a metal surface interacts with it in some way, thus gaining a coherent 2P -state admixture; in other words, the pure 2S state is transformed into a 2S − 2P superposition [6][7][8]. At the first glance, this effect could be attributed to the action of a random electric field E that arouses for some reason on the metal surface.…”

“…Apart from the purely metrological applications, study of the interference of atomic states has its own value, as the interference pattern developed over a large range of phase shifts is highly sensitive to the properties of interfering components that can show themselves in previously unknown aspects inaccessible for observation by other procedures. Indeed, I found that a metastable H 2S -atom flying above a metal surface interacts with it in some way, thus gaining a coherent 2P -state admixture; in other words, the pure 2S state is transformed into a 2S − 2P superposition [6][7][8]. At the first glance, this effect could be attributed to the action of a random electric field E that arouses for some reason on the metal surface.…”

Oscillation Properties of Differential Operators and Convolution Operators, and Some Applications

“…coherent state mixing (see e.g. [2]). Substituting all the parameters of the second experiment, we found the following value of b(l) from the least-square fitting of eq.…”

On the accuracy of Lamb shift measurements in hydrogen

“…Nevertheless, there are good grounds to believe that the theoretical value of the Lamb shift in hydrogen will soon have a split-kHz accuracy (not to speak, indeed, of uncertainties concerning the atomic nucleus size [7]). Up to date, the highestprecision theoretical results for (H, n = 2) are: 6(H, n = 2) [5] 1057.810 (4)(4) M E , rp = 0.805 (11) fm =I 1057.829 (4)(4) MHz, rP = 0.862 (11) fm' 1057.819 (6) MHz, rp = 0.805 (11) fm 1057.838 (6) MHz, rp = 0.862 (11) fm' 6(H, n = 2) [6] = In this situation, all the results of Lamb-shift measurements with adequate precision are of fundamental importance. At present, there is an experimental result at our disposal 6(H, n = 2) = 1057.8514 (19) MHz, which was obtained with the atomic-interferometer method and satisfies all the requirements in the most satisfactory way.…”