Download Quantum Measurements in Optics by Roy J. Glauber (auth.), Paolo Tombesi, Daniel F. Walls PDF
By Roy J. Glauber (auth.), Paolo Tombesi, Daniel F. Walls (eds.)
The NATO complicated learn Workshop on Quantum Measurements in Optics used to be held in Cortina d'Ampezzo, Italy, January 21-25, 1991. This workshop was once attended via 70 individuals from sixteen assorted international locations. the topics mentioned at this workshop focused on quantum measurements in optics made attainable via the hot advances within the iteration and detection of sunshine with low quantum noise. those advances have happened concurrently with the advance of atomic traps able to trapping a unmarried atom for a substantial time period. The interplay of a unmarried point atom with the one mode of the electromagnetic box is now attainable in excessive Q microcavities. a brand new box of hollow space QED has constructed learning the homes of Rydberg atoms in microwave cavities. At this assembly we heard the 1st record of an atomic interferometer the place a unmarried atom passing throughout the slits shows wave like interference phenomena. This new box concerning the move of momentum from photons to atoms has bring about new chances for quantum nondemolition measurements on an optical box. We heard feedback for such measurements at this assembly. With the hot mild resources to be had the potential for utilizing low quantum noise gentle in optical communications turns into as regards to truth. the matter of the propagation of quantum gentle box in optical fibres was once actively mentioned at this meeting.
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Roy. , A124, 440, (1929). 12. This argument was presented to me by Paul Berman many years ago. 13. D. M. Lifshitz, Quantum Mecbanics, §7, (Pergamon Press, Oxford, 1958). 14. H. Dehl11elt, Z. , DID, 1278, (1988). 15. R. Peierls in private discusion with the author. 16. H. Dehl11elt, Am. J. , 58, 17, (1990). 17. J. O. H. E. Pritchard, Phys. Rev. , 60, 515, (1988). 18. P. Kazantsev, Sov. Phys. -JETP, 40, 825, (1975). 19. J. L. G. H. E. Pritchard, Pbys. , A36, 2495, (1987). 20. E. Arimondo, A. Bambini and S.
A third possibility is to Zeeman tune the atomic resonance over a well defined area of space. 17 This has the advantage to create a cooled cw atomic beam, but due to the Zeeman splitting the transition is no longer a two level system. However, a two level system can be maintained if the cooling laser is purely 0-+ polarized, exciting the transition lss(mJ = +2) - 2pg(mJ = +3) only. Of course, all atoms within the velocity distribution have to be pumped into the (mJ = +2) ground state sublevel, to participate in the cooling process.
Scanning the interference fringes with the grating is of interest in experiments where only the phase change between the two paths and not the exact shape of the interference pattern is of importance. A scan over the atomic inteference structure is shown in Fig. 2. m, which is within 5% of the theoretical predictions. The visibility amounts to 30%, whereas 50% can be expected under ideal conditions. The mean relative error at each detector position is less than 10% when integrating 5 minutes per point, and is due to the stochastic nature of the arrivals at the detector.