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Hybrid Heralded Noiseless Amplification with Finite-Cutoff Quantum Scissors — arXiv:2608.27872

Source: arXiv (en)
Original: https://arxiv.org/abs/2608.27872
License (as archived): CC0-1.0
Archived: 2026-10-17T11:58:19.805Z
SHA-256 of the archived text: e6c9b4bd5aa9b249e4d4f452974beaf1a4c2952f195545501d0e02018162b4d5
Stable URL of this page: https://metraipolis.com/documento/dc_54cfe4ba034e

How to cite

Hybrid Heralded Noiseless Amplification with Finite-Cutoff Quantum Scissors — arXiv:2608.27872 — arXiv (en), https://arxiv.org/abs/2608.27872 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_54cfe4ba034e (Metraipolis archive dc_54cfe4ba034e, sha256 e6c9b4bd5aa9b249e4d4f452974beaf1a4c2952f195545501d0e02018162b4d5)

BibTeX

@misc{dc54cfe4ba034e,
  title = {Hybrid Heralded Noiseless Amplification with Finite-Cutoff Quantum Scissors — arXiv:2608.27872},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2608.27872},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_54cfe4ba034e; sha256 e6c9b4bd5aa9b249e4d4f452974beaf1a4c2952f195545501d0e02018162b4d5},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2608.27872. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

A noiseless linear amplifier (NLA) can probabilistically amplify an optical state without the noise required by deterministic phase-insensitive amplification. We study a hybrid amplifier in which a finite-cutoff quantum-scissor NLA is placed between two single-mode squeezers. Analysis based on an ideal (infinite cutoff) NLA finds a gain enhancement from the squeezing. We explore the physics of this enhancement as the cutoff of the quantum scissors is increased. The low-cutoff sequence shows how this gain enhancement emerges from the truncated Fock space. Cutoff 3 is the lowest order at which the additional even- and odd-photon components can both contribute to gain enhancement, albeit with some skewing of the coefficients which reduces the fidelity. As the cutoff is increased the fidelity improves. However, unlike the ideal transformation, the finite-cutoff device depends on the phase of the coherent amplitude relative to the squeezing axes, with states aligned with the anti-squeezing requiring higher cutoffs to achieve high fidelity. We track behavior to high cutoffs and eventually see the performance predicted in the ideal theory emerge.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-08-31 in quant-ph).
Categorie arXiv: Quantum Physics (quant-ph).
Pagina del lavoro: https://arxiv.org/abs/2608.27872 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-17T11:28:37.500Z dalla pagina https://arxiv.org/catchup/quant-ph/2026-08-31?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).