Exponentially enhanced two-mode multiboson entanglement via phase-modulated tunneling

Abstract:The entanglement of quantum systems is commonly restricted by their coupling Hamiltonian and initial state properties. Here, we prove by exact analysis of tunnel-coupled bosonic field modes, that factorized multi-boson two-mode states can become fully entangled via stroboscopic sign flips of the two-mode coupling. Their entanglement can exponentially grow with the number of flips. With the exception of specific prohibitive states that are invariant under such sign-flip control, this effect universally applies to two-mode state preparation. Remarkably, this linear control may provide entanglement resources for diverse quantum technological applications by readily available means.

arXiv:2607.21441 [quant-ph]

(or arXiv:2607.21441v1 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2607.21441 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

https://doi.org/10.1103/mxnp-zvth Focus to learn more DOI(s) linking to related resources

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