Squeezed states of light after high-order harmonic generation in excited atomic systems

TY - JOUR

T1 - Squeezed states of light after high-order harmonic generation in excited atomic systems

AU - Rivera-Dean, J.

AU - Crispin, H. B.

AU - Stammer, P.

AU - Lamprou, Th

AU - Pisanty, E.

AU - Krüger, M.

AU - Tzallas, P.

AU - Lewenstein, M.

AU - Ciappina, M. F.

N1 - Publisher Copyright: © 2024 American Physical Society.

PY - 2024/12/23

Y1 - 2024/12/23

N2 - High-harmonic generation (HHG) has recently emerged as a promising method for generating nonclassical states of light with frequencies spanning from the infrared up to the extreme ultraviolet regime. In this work, we theoretically investigate the generation of squeezed states of light through HHG processes in atomic systems that were initially driven to their first excited state. Our study reveals significant single-mode squeezing in both the driving field and low-order harmonic modes. Additionally, we characterize two-mode squeezing features in the generated states, both between fundamental and harmonic modes, and among the harmonic modes themselves. Using these correlations, we demonstrate the generation of optical Schrödinger kitten states through heralding measurements, specifically via photon subtraction in one of the modes influenced by two-mode squeezing.

AB - High-harmonic generation (HHG) has recently emerged as a promising method for generating nonclassical states of light with frequencies spanning from the infrared up to the extreme ultraviolet regime. In this work, we theoretically investigate the generation of squeezed states of light through HHG processes in atomic systems that were initially driven to their first excited state. Our study reveals significant single-mode squeezing in both the driving field and low-order harmonic modes. Additionally, we characterize two-mode squeezing features in the generated states, both between fundamental and harmonic modes, and among the harmonic modes themselves. Using these correlations, we demonstrate the generation of optical Schrödinger kitten states through heralding measurements, specifically via photon subtraction in one of the modes influenced by two-mode squeezing.

UR - http://www.scopus.com/inward/record.url?scp=85213063805&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.110.063118

DO - 10.1103/PhysRevA.110.063118

M3 - Article

AN - SCOPUS:85213063805

SN - 2469-9926

VL - 110

JO - Physical Review A

JF - Physical Review A

IS - 6

M1 - 063118

ER -