Heralded Generation of Multipartite Free-Electron W-State Entanglement
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arXiv
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| Auteurs principaux: | , , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866913137816502272 |
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| author | Ran, Du Liu, Jing-Yi Jin, Dan Liu, Shuai Ianconescu, Reuven He, Ze-Long Bai, Ji-Yuan Li, Ya-dong Gover, Avraham |
| author_facet | Ran, Du Liu, Jing-Yi Jin, Dan Liu, Shuai Ianconescu, Reuven He, Ze-Long Bai, Ji-Yuan Li, Ya-dong Gover, Avraham |
| contents | We propose a heralded protocol for generating multipartite free-electron entanglement from atomic $W_N$ resources in a sideband-resolved interaction regime. The scheme consists of $N$ independent electron--atom interaction arms, where each free electron couples locally to one two-level system. For uniform couplings and common detuning, the dynamics is solved analytically within the rotating-wave approximation. Projecting the atoms onto the all-ground state maps the initial atomic excitation manifold onto the electronic upper-sideband manifold and prepares an exact $N$-electron $W_N$-type state. The heralding probability is obtained in closed form for resonant and detuned regimes. At resonance, the optimal success probability obeys the large-$N$ scaling $P_{G_N}^{\max}\sim e^{-1}/N$. The heralded state retains the multipartite entanglement structure of the atomic resource, as shown for arbitrary $N$ and illustrated explicitly for $N=3$. Detuning, weak symmetry breaking, beyond-rotating-wave corrections, and Gaussian coupling envelopes are discussed. The protocol provides a scalable route toward multipartite free-electron entanglement generation from localized atomic resources within quantum electron optics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_17802 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Heralded Generation of Multipartite Free-Electron W-State Entanglement Ran, Du Liu, Jing-Yi Jin, Dan Liu, Shuai Ianconescu, Reuven He, Ze-Long Bai, Ji-Yuan Li, Ya-dong Gover, Avraham Quantum Physics We propose a heralded protocol for generating multipartite free-electron entanglement from atomic $W_N$ resources in a sideband-resolved interaction regime. The scheme consists of $N$ independent electron--atom interaction arms, where each free electron couples locally to one two-level system. For uniform couplings and common detuning, the dynamics is solved analytically within the rotating-wave approximation. Projecting the atoms onto the all-ground state maps the initial atomic excitation manifold onto the electronic upper-sideband manifold and prepares an exact $N$-electron $W_N$-type state. The heralding probability is obtained in closed form for resonant and detuned regimes. At resonance, the optimal success probability obeys the large-$N$ scaling $P_{G_N}^{\max}\sim e^{-1}/N$. The heralded state retains the multipartite entanglement structure of the atomic resource, as shown for arbitrary $N$ and illustrated explicitly for $N=3$. Detuning, weak symmetry breaking, beyond-rotating-wave corrections, and Gaussian coupling envelopes are discussed. The protocol provides a scalable route toward multipartite free-electron entanglement generation from localized atomic resources within quantum electron optics. |
| title | Heralded Generation of Multipartite Free-Electron W-State Entanglement |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2605.17802 |