By W. T. Grandy Jr, P. W. Milonni
The pioneering paintings of Edwin T. Jaynes within the box of statistical physics, quantum optics, and chance idea has had an important and lasting influence at the examine of many actual difficulties, starting from primary theoretical questions via to sensible purposes corresponding to optical snapshot recovery. Physics and likelihood is a set of papers in those components by means of a few of his many colleagues and previous scholars, dependent mostly on lectures given at a symposium celebrating Jaynes' contributions, at the social gathering of his 70th birthday and retirement as Wayman Crow Professor of Physics at Washington college. the gathering includes numerous authoritative overviews of present study on greatest entropy and quantum optics, the place Jaynes' paintings has been really influential, in addition to experiences on a few similar subject matters. within the concluding paper, Jaynes appears to be like again over his profession, and offers encouragement and sound suggestion to younger scientists. All these engaged in learn on any of the themes mentioned in those papers will locate this an invaluable and interesting assortment, and a becoming tribute to a great and cutting edge scientist.
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Additional info for Physics and Probability: Essays in Honor of Edwin T. Jaynes
Example text
This is based on the logic of the famous "Ramsey fringe" experiment. In this experiment two microwave fields are applied to the atoms one after the other. The interference occurs since the transition from an upper state to a lower state may either occur in the first or in the second interaction region. In order to THE JAYNES-CUMMINGS MODEL AND THE ONE-ATOM-MASER 45 Rydberg afoms ///////////////////////////////////////////////////////m 1st microwave field 2nd microwave field Fig. 7. Setup for the Ramsey experiment.
Here we find it impossible to tell which slit light went through while observing an interference pattern. In other words, any attempt to gain which-path information disturbs the light so as to wash out the interference fringes. This point has been emphasized by Bohr in his rebuttal to Einstein's ingenious proposal of using recoiling slits (Wheeler and Zurek, 1983) to obtain "which-path" information while still observing interference. The physical positions of the recoiling slits, Bohr argues, are only known to within the uncertainty principle.
If there are no thermal photons in the cavity - a condition achievable by cooling the resonator to an extremely low temperature - very interesting features such as trapping states show up (Meystre, Rempe and Walther, 1988). In addition, steady-state macroscopic quantum superpositions can be generated in the field of the one-atom maser pumped by two-level atoms injected in a coherent superposition of their upper and lower states (Slosser, Meystre and Wright, 1990). Unfortunately, the measurement of the nonclassical photon statistics in the cavity is not that straightforward.