Quantum carpets woven by cold atoms in a laser field

P Kazemi, S. Chaturvedi, Irene Marzoli +2 more

Quantum carpets—the spatio-temporal de Broglie density profiles—woven by an atom or an electron in the near-field region of a diffraction grating bring to light, in real time, the decoherence of each individual component of the interference term of the Wigner function characteristic of superposition states. The proposed experiments are feasible with present-day technology.

Michael Berry, Irene Marzoli, Wolfgang P. Schleich

Carlos Alberto Parra Murillo, Manuel H. Muñoz-Arias, Javier Madroñero

Irene Marzoli, Farhan Saif, Iwo Białynicki‐Birula +3 more

We show that the concept of degeneracy is the key idea for understanding the quantum carpet woven by a particle in the box.

Iqra Yausaf, Shahid Iqbal

Quantum carpets- in position and momentum space- woven by the self-interference of de Broglie wave of an atom or an electron, trapped in an infinitely deep potential well, are explained. The recurrence of self-similar structures in designs of these carpets mimics the phenomena of quantum revivals and fractional revivals. We identify fractional revivals of various order by means of these space-time and momentum-time interference patterns.