Quantum state engineering of light using intensity measurements and postselection
Year: 2025
Type: article
Abstract: Quantum state engineering of light is of great interest for quantum technologies, particularly generating non-classical states of light, and is often studied through quantum conditioning approaches. Recently, we demonstrated that such approaches can be applied in intense laser-atom interactions to generate optical "cat" states by using intensity measurements and classical post-selection of the measurement data. Post-processing of the sampled data set allows to select specific events corresponding to measurement statistics as if there would be non-classical states of light leading to these measurement outcomes. However, to fully realize the potential of this method for quantum state engineering, it is crucial to thoroughly investigate the role of the involved measurements and the specifications of the post-selection scheme. We illustrate this by analyzing post-selection schemes recently developed for the process of high harmonic generation, which enables generating optical cat states bright enough to induce non-linear phenomena. These findings provide significant guidance for quantum light engineering and the generation of high-quality, intense optical cat states for applications in non-linear optics and quantum information science.
Source: Physical Review A
DOI: 10.1103/11vz-9gcz
Institutions: Institute of Photonic Sciences, Barcelona Institute of Science and Technology, Foundation for Research and Technology Hellas, King's College London, Technion – Israel Institute of Technology, Guangdong Technion-Israel Institute of Technology, ELI-HU Research and Development Non-Profit, Institució Catalana de Recerca i Estudis Avançats, TU Wien
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: Centres de Recerca de Catalunya, Institut de Ciències Fotòniques, Royal Society, European Commission, Generalitat de Catalunya, General Secretariat for Research and Technology, Natural Science Foundation of Guangdong Province, Ministerio de Ciencia e Innovación, Barcelona Supercomputing Center, Hellenic Foundation for Research and Innovation, QuantERA, European Climate, Infrastructure and Environment Executive Agency, Horizon 2020 Framework Programme, HORIZON EUROPE Framework Programme, Agència de Gestió d'Ajuts Universitaris i de Recerca, European Regional Development Fund, Agencia Estatal de Investigación, Special Fund Project for Science and Technology Innovation Strategy of Guangdong Province, HORIZON EUROPE Marie Sklodowska-Curie Actions
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OpenAlex ID: W4411599538