Optical-cavity mode squeezing by free electrons
The generation of nonclassical light states bears a paramount importance in quantum optics and is largely relying on the interaction between intense laser pulses and nonlinear media. Recently, electron beams, such as those used in ultrafast electron microscopy to retrieve information from a specimen...
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| Format: | Article |
| Language: | English |
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De Gruyter
2022-10-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2022-0481 |
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| author | Di Giulio Valerio García de Abajo F. Javier |
| author_facet | Di Giulio Valerio García de Abajo F. Javier |
| author_sort | Di Giulio Valerio |
| collection | DOAJ |
| description | The generation of nonclassical light states bears a paramount importance in quantum optics and is largely relying on the interaction between intense laser pulses and nonlinear media. Recently, electron beams, such as those used in ultrafast electron microscopy to retrieve information from a specimen, have been proposed as a tool to manipulate both bright and dark confined optical excitations, inducing semiclassical states of light that range from coherent to thermal mixtures. Here, we show that the ponderomotive contribution to the electron–cavity interaction, which we argue to be significant for low-energy electrons subject to strongly confined near-fields, can actually create a more general set of optical states, including coherent and squeezed states. The postinteraction electron spectrum further reveals signatures of the nontrivial role played by A
2 terms in the light–matter coupling Hamiltonian, particularly when the cavity is previously excited by either chaotic or coherent illumination. Our work introduces a disruptive approach to the creation of nontrivial quantum cavity states for quantum information and optics applications, while it suggests unexplored possibilities for electron beam shaping. |
| format | Article |
| id | doaj-art-d0dda1438ebc459a8e4a59cc37ee9dbb |
| institution | Kabale University |
| issn | 2192-8614 |
| language | English |
| publishDate | 2022-10-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-d0dda1438ebc459a8e4a59cc37ee9dbb2024-11-25T11:19:08ZengDe GruyterNanophotonics2192-86142022-10-0111214659467010.1515/nanoph-2022-0481Optical-cavity mode squeezing by free electronsDi Giulio Valerio0García de Abajo F. Javier1ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860Castelldefels, Barcelona, SpainICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860Castelldefels, Barcelona, SpainThe generation of nonclassical light states bears a paramount importance in quantum optics and is largely relying on the interaction between intense laser pulses and nonlinear media. Recently, electron beams, such as those used in ultrafast electron microscopy to retrieve information from a specimen, have been proposed as a tool to manipulate both bright and dark confined optical excitations, inducing semiclassical states of light that range from coherent to thermal mixtures. Here, we show that the ponderomotive contribution to the electron–cavity interaction, which we argue to be significant for low-energy electrons subject to strongly confined near-fields, can actually create a more general set of optical states, including coherent and squeezed states. The postinteraction electron spectrum further reveals signatures of the nontrivial role played by A 2 terms in the light–matter coupling Hamiltonian, particularly when the cavity is previously excited by either chaotic or coherent illumination. Our work introduces a disruptive approach to the creation of nontrivial quantum cavity states for quantum information and optics applications, while it suggests unexplored possibilities for electron beam shaping.https://doi.org/10.1515/nanoph-2022-0481light–matter interactionponderomotive interactionquantum opticssqueezed states |
| spellingShingle | Di Giulio Valerio García de Abajo F. Javier Optical-cavity mode squeezing by free electrons Nanophotonics light–matter interaction ponderomotive interaction quantum optics squeezed states |
| title | Optical-cavity mode squeezing by free electrons |
| title_full | Optical-cavity mode squeezing by free electrons |
| title_fullStr | Optical-cavity mode squeezing by free electrons |
| title_full_unstemmed | Optical-cavity mode squeezing by free electrons |
| title_short | Optical-cavity mode squeezing by free electrons |
| title_sort | optical cavity mode squeezing by free electrons |
| topic | light–matter interaction ponderomotive interaction quantum optics squeezed states |
| url | https://doi.org/10.1515/nanoph-2022-0481 |
| work_keys_str_mv | AT digiuliovalerio opticalcavitymodesqueezingbyfreeelectrons AT garciadeabajofjavier opticalcavitymodesqueezingbyfreeelectrons |