Continuous-variable square-ladder cluster states in a microwave frequency comb
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866908355041165312 |
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| author | Lingua, Fabio Hernández, J. C. Rivera Cortinovis, Michele Haviland, David B. |
| author_facet | Lingua, Fabio Hernández, J. C. Rivera Cortinovis, Michele Haviland, David B. |
| contents | We describe an experiment demonstrating the generation of three independent square-ladder continuous-variable cluster states with up to 94 qumodes of a microwave frequency comb. This entanglement structure at a large scale is realized by injecting vacuum fluctuations into a Josephson Parametric Amplifier pumped by three coherent signals around twice its resonance frequency, each having a particular well-defined phase relation. We reach up to 1.4 dB of squeezing of the nullifier which verifies the cluster state on the square ladder graph. Our results are consistent with a more familiar measure of two-mode squeezing, where we find up to 5.42 dB for one pump, and up to 1 dB for three pumps. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_00599 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Continuous-variable square-ladder cluster states in a microwave frequency comb Lingua, Fabio Hernández, J. C. Rivera Cortinovis, Michele Haviland, David B. Quantum Physics We describe an experiment demonstrating the generation of three independent square-ladder continuous-variable cluster states with up to 94 qumodes of a microwave frequency comb. This entanglement structure at a large scale is realized by injecting vacuum fluctuations into a Josephson Parametric Amplifier pumped by three coherent signals around twice its resonance frequency, each having a particular well-defined phase relation. We reach up to 1.4 dB of squeezing of the nullifier which verifies the cluster state on the square ladder graph. Our results are consistent with a more familiar measure of two-mode squeezing, where we find up to 5.42 dB for one pump, and up to 1 dB for three pumps. |
| title | Continuous-variable square-ladder cluster states in a microwave frequency comb |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2411.00599 |