Photon echo signature of vibrational cat states created by femtosecond excitation of molecules

Details Photon echo signature of vibrational cat states created by femtosecond excitation of molecules Photon echo signature of vibrational cat states created by femtosecond excitation of molecules

2000-07-28

arxiv.org/abs/quant-ph/0007107v2

J. Opt. B: Quantum Semiclass. Opt. 4 (2002) 99-102

Physics

Quantum Physics

8 pages, 4 figures, modified introduction and discussion

Scientific paper

10.1088/1464-4266/4/2/303

A pair of coherent femtosecond pulse excitations applied to a molecule with strong electron-phonon coupling creates a coherent superposition of a low momentum and a high momentum wavepacket in the vibrational states of both the excited state and the ground state of the coherent transition. As the excited state is accelerated further, interference between the high momentum ground state contribution and the low momentum excited state contribution causes a photon echo. This photon echo is a direct consequence of quantum interference between separate vibrational trajectories and can therefore provide experimental evidence of the non-classical properties of molecular vibrations.

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