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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.02607 |
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| _version_ | 1866914177480654848 |
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| author | Erkilic, Ozlem Das, Aritra Shajilal, Biveen Lam, Ping Koy Ralph, Timothy C. Assad, Syed M. |
| author_facet | Erkilic, Ozlem Das, Aritra Shajilal, Biveen Lam, Ping Koy Ralph, Timothy C. Assad, Syed M. |
| contents | Quantum technologies, encompassing communication, computation, and metrology, rely on the generation and control of non-Gaussian states of light. These states enable secure quantum communication, fault-tolerant quantum computation, and precision sensing beyond classical limits, yet their practical realisation remains a major challenge due to reliance on high-photon-number Fock states or strong non-linearities. Here we introduce a unified optical framework that removes this constraint, using only Gaussian inputs, optical parametric amplification, and heralded photon detection. Within a single architecture, we demonstrate the generation of photon-added squeezed states with near unit fidelity, cubic-phase-like states with strong non-linearities and fidelities above 98.5%, and squeezed-cat states exceeding 99% fidelity that can be iteratively bred into GKP grid states surpassing the 9.75 dB fault-tolerance threshold. Operating entirely below 3 dB of input squeezing, the approach provides a scalable, experimentally accessible platform that unites the state resources required for quantum communication, metrology, and computation within one coherent optical framework. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_02607 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A unified optical platform for non-Gaussian and fault-tolerant Gottesman-Kitaev-Preskill states Erkilic, Ozlem Das, Aritra Shajilal, Biveen Lam, Ping Koy Ralph, Timothy C. Assad, Syed M. Quantum Physics Quantum technologies, encompassing communication, computation, and metrology, rely on the generation and control of non-Gaussian states of light. These states enable secure quantum communication, fault-tolerant quantum computation, and precision sensing beyond classical limits, yet their practical realisation remains a major challenge due to reliance on high-photon-number Fock states or strong non-linearities. Here we introduce a unified optical framework that removes this constraint, using only Gaussian inputs, optical parametric amplification, and heralded photon detection. Within a single architecture, we demonstrate the generation of photon-added squeezed states with near unit fidelity, cubic-phase-like states with strong non-linearities and fidelities above 98.5%, and squeezed-cat states exceeding 99% fidelity that can be iteratively bred into GKP grid states surpassing the 9.75 dB fault-tolerance threshold. Operating entirely below 3 dB of input squeezing, the approach provides a scalable, experimentally accessible platform that unites the state resources required for quantum communication, metrology, and computation within one coherent optical framework. |
| title | A unified optical platform for non-Gaussian and fault-tolerant Gottesman-Kitaev-Preskill states |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2512.02607 |