Covert Entanglement Generation over Bosonic Channels
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915658421239808 |
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| author | Anderson, Evan J. D. Bullock, Michael S. Kimelfeld, Ohad Eyre, Christopher K. Rozpędek, Filip Pereg, Uzi Bash, Boulat A. |
| author_facet | Anderson, Evan J. D. Bullock, Michael S. Kimelfeld, Ohad Eyre, Christopher K. Rozpędek, Filip Pereg, Uzi Bash, Boulat A. |
| contents | We explore covert entanglement generation over the lossy thermal-noise bosonic channel, which is a quantum-mechanical model of many practical settings, including optical, microwave, and radio-frequency (RF) channels. Covert communication ensures that an adversary is unable to detect the presence of transmissions, which are concealed in channel noise. We show that a square root law (SRL) for covert entanglement generation similar to that for classical communication: $L_{\rm EG}\sqrt{n}$ entangled bits (ebits) can be generated covertly and reliably over $n$ uses of a bosonic channel. We report a single-letter expression for optimal $L_{\rm EG}$ as well as an achievable method. We additionally analyze the performance of covert entanglement generation using single- and dual-rail photonic qubits, which may be more practical for physical implementation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_09474 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Covert Entanglement Generation over Bosonic Channels Anderson, Evan J. D. Bullock, Michael S. Kimelfeld, Ohad Eyre, Christopher K. Rozpędek, Filip Pereg, Uzi Bash, Boulat A. Quantum Physics Cryptography and Security We explore covert entanglement generation over the lossy thermal-noise bosonic channel, which is a quantum-mechanical model of many practical settings, including optical, microwave, and radio-frequency (RF) channels. Covert communication ensures that an adversary is unable to detect the presence of transmissions, which are concealed in channel noise. We show that a square root law (SRL) for covert entanglement generation similar to that for classical communication: $L_{\rm EG}\sqrt{n}$ entangled bits (ebits) can be generated covertly and reliably over $n$ uses of a bosonic channel. We report a single-letter expression for optimal $L_{\rm EG}$ as well as an achievable method. We additionally analyze the performance of covert entanglement generation using single- and dual-rail photonic qubits, which may be more practical for physical implementation. |
| title | Covert Entanglement Generation over Bosonic Channels |
| topic | Quantum Physics Cryptography and Security |
| url | https://arxiv.org/abs/2506.09474 |