High harmonic generation driven by quantum light
- URL: http://arxiv.org/abs/2211.03188v1
- Date: Sun, 6 Nov 2022 17:44:30 GMT
- Title: High harmonic generation driven by quantum light
- Authors: Alexey Gorlach, Matan Even Tzur, Michael Birk, Michael Kr\"uger,
Nicholas Rivera, Oren Cohen and Ido Kaminer
- Abstract summary: High harmonic generation (HHG) is an extreme nonlinear process where intense pulses of light drive matter to emit high harmonics of the driving frequency.
We show that the defining spectral characteristics of HG, such as the plateau and cutoff, are sensitive to the photon statistics of the driving light.
We develop the theory of extreme nonlinear optics driven by squeezed light, and more generally by arbitrary quantum states of light.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: High harmonic generation (HHG) is an extreme nonlinear process where intense
pulses of light drive matter to emit high harmonics of the driving frequency,
reaching the extreme ultraviolet (XUV) and x-ray spectral ranges. So far, the
HHG process was always generated by intense laser pulses that are well
described as a classical electromagnetic field. Advances in the generation of
intense squeezed light motivate us to revisit the fundamentals of HHG and ask
how the photon statistics of light may alter this process, and more generally
alter the field of extreme nonlinear optics. The role of photon statistics in
non-perturbative interactions of intense light with matter has remained
unexplored in both experiments and theory. Here we show that the defining
spectral characteristics of HHG, such as the plateau and cutoff, are sensitive
to the photon statistics of the driving light. While coherent (classical) and
Fock light states induce the established HHG cutoff law, thermal and squeezed
states substantially surpass it, extending the cutoff compared to classical
light of the same intensity. Hence, shaping the photon statistics of light
enables producing far higher harmonics in HHG. We develop the theory of extreme
nonlinear optics driven by squeezed light, and more generally by arbitrary
quantum states of light. Our work introduces quantum optical concepts to
strong-field physics as new degrees of freedom in the creation and control of
HHG, and finally shows that experiments in this field are feasible. Looking
forward, HHG driven by quantum light creates quantum states of XUV and X-rays,
enabling applications of quantum optics in new spectral regimes.
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