Journal
SCIENCE ADVANCES
Volume 7, Issue 18, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abf6380
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Funding
- Deutsche Forschungsgemeinschaft (DFG) in the Collaborative Research Center Atomic Scale Control of Energy Conversion [DFG-SFB 1073]
- Priority Program Quantum Dynamics in Tailored Intense Fields [DFG-SPP 1840]
- ERC [789104]
- Spanish MINECO [MAT201788492-R, SEV2015-0522]
- European Commission [101017720-EBEAM]
- Humboldt Foundation
- Max Planck Society from the Manfred Eigen Fellowship
- EU [713729]
- European Research Council (ERC) [789104] Funding Source: European Research Council (ERC)
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This theoretical study investigates the quantum-coherence properties of cathodoluminescence emission generated by a temporally modulated electron beam, revealing the presence of phase correlations between the emitted CL field and the electron-modulating laser. The coherence of the CL field extends to harmonics of the laser frequency, suggesting the potential for ultra-precise manipulation and probing of nanoscale quantum systems through the optical coherence transferred by electron beams focused to below 1 A.
We theoretically investigate the quantum-coherence properties of the cathodoluminescence (CL) emission produced by a temporally modulated electron beam. Specifically, we consider the quantum-optical correlations of CL produced by electrons that are previously shaped by a laser field. Our main prediction is the presence of phase correlations between the emitted CL field and the electron-modulating laser, even though the emission intensity and spectral profile are independent of the electron state. In addition, the coherence of the CL field extends to harmonics of the laser frequency. Since electron beams can be focused to below 1 A, their ability to transfer optical coherence could enable the ultra-precise excitation, manipulation, and spectrally resolved probing of nanoscale quantum systems.
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