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Topics in applied physics

Generation of Optical Schrödinger “Cat” States Using Intense Laser-Matter Interactions and Applications in Non-linear Optics

Nikolaos Tsatrafyllis, Theocharis Lamprou, Marcelo F. Ciappina, Maciej Lewenstein, P. Tzallas

Published Jan 1, 2026• 0 citations
Publisher
DOI
10.1007/978-3-032-09295-3_7

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Recently, using conditioning approaches on the high-harmonic generation process induced by intense laser-atom interactions, we have developed a new method for the generation of optical Schrödinger cat states (Lewenstein et al. in Nat Phys, 17 1104–1108, 2021. https://doi/10.1038/s41567-021-01317-w). These quantum optical states have been proven to be very manageable as, by modifying the conditions under which harmonics are generated, one can interplay between kitten and genuine cat states. Here, we demonstrate that this method can also be used for the development of new schemes towards the creation of optical Schrödinger cat states, consisting of the superposition of three distinct coherent states. Apart from the interest these kind of states have on their own, we additionally propose a scheme for using them towards the generation of large cat states involving the sum of two different coherent states. The quantum properties of the obtained superpositions aim to significantly increase the applicability of optical Schrödinger cat states for quantum technology and quantum information processing.