https://doi.org/10.1140/epjp/s13360-024-05521-4
Regular Article
Quantum state storage in a travelling dark-state polariton under a standing wave control laser field in a solid-state medium
1
Department of Astrophysics and High Energy Physics, S.N. Bose National Centre for Basic Sciences, Salt Lake, JD Block, Sector 3, Bidhannagar, 700106, Kolkata, West Bengal, India
2
Department of Physics, Sister Nivedita University, DG Block, Action Area I, 1/2, Newtown, 700156, Kolkata, West Bengal, India
Received:
31
December
2023
Accepted:
30
July
2024
Published online:
13
August
2024
In this paper, we derive an expression for the dark-state polariton field, formed by the superposition of atomic and photonic states, for the case of a travelling probe laser pulse under the application of a standing wave control laser pulse for a lambda-level scheme EIT System in a solid crystal. We show how an enhancement in the nonlinearity of the EIT process by eliminating pulse broadening due to diffusion can be achieved in the case of a travelling probe pulse under the effect of standing wave control laser pulses. At last, we propose an experiment that can help realise the storage of a probe pulse in the hyperfine levels 3H4 ↔ 1D2 of Pr3+: Y2SiO5, cryogenically cooled at 4.5 K. We, at last, predict from the temporal variation of the energy density of the stored probe pulse that a longer storage time of the travelling probe pulse is possible for a perfect standing wave control laser field than a non-standing control wave, due to its more prominent nonlinear effect.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
