Diffraction in time
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Diffraction in time is a phenomenon associated with the quantum dynamics of suddenly released matter waves initially confined in a region of space. It was introduced in 1952 by Marcos Moshinsky with the shutter problem
-  A matter-wave beam stopped by an absorbing shutter exhibits an oscillatory density profile during its propagation after removal of the shutter. Whenever this propagation is accurately described by the time-dependent Schrödinger equation, the transient wave functions resemble the solutions that appear for the intensity of light subject to Fresnel diffraction by a straight edge. For this reason, the transient phenomenon was dubbed diffraction in time and has since then been recognised as ubiquitous in quantum dynamics.
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- del Campo, A.; García-Calderón, G.; Muga, J. G. (2009). "Quantum transients". Physics Reports 476: 1–50. arXiv:0812.3034. Bibcode:2009PhR...476....1D. doi:10.1016/j.physrep.2009.03.002.
- Szriftgiser, A.; Guéry-Odelin, D.; Arndt, M.; Dalibard, J. (1996). "Atomic Wave Diffraction and Interference Using Temporal Slits". Physical Review Letters 77: 4–7. Bibcode:1996PhRvL..77....4S. doi:10.1103/PhysRevLett.77.4.