---
OA_place: repository
OA_type: green
_id: '21681'
abstract:
- lang: eng
  text: Enhancing interactions in many-body quantum systems, while protecting them
    from environmental decoherence, is at the heart of many quantum technologies.
    Waveguide quantum electrodynamics is a promising platform for achieving this,
    as it hosts infinite-range interactions and decoherence-free subspaces of quantum
    emitters. However, as coherent interactions between emitters are typically washed
    out in the wavelength-spacing regime hosting decoherence-free states, coherent
    control over the latter becomes limited, and many-body Hamiltonians in this important
    regime remain out of reach. Here we show that by incorporating emitter arrays
    with nonlinear waveguides hosting parametric gain, we obtain a unique class of
    many-body interaction Hamiltonians with coupling strengths that increase with
    emitter spacing, and persist even for wavelength-spaced arrays. We then propose
    to use these Hamiltonians to coherently generate decoherence-free states directly
    from the ground state, using only global squeezing drives, without the need for
    local addressing of individual emitters. Interestingly, we find that the dynamics
    approaches a unitary evolution in the limit of weak intra-waveguide squeezing,
    and discuss potential experimental realizations of this effect. Our results pave
    the way towards coherent control protocols in waveguide quantum electrodynamics,
    with applications including quantum computing, simulation, memory and nonclassical
    light generation.
article_number: '2405.20241'
article_processing_charge: No
arxiv: 1
author:
- first_name: Aviv
  full_name: Karnieli, Aviv
  last_name: Karnieli
- first_name: Offek
  full_name: Tziperman, Offek
  last_name: Tziperman
- first_name: Charles
  full_name: Roques-Carmes, Charles
  id: e2e68fc9-6505-11ef-a541-eb4e72cc3e82
  last_name: Roques-Carmes
- first_name: Shanhui
  full_name: Fan, Shanhui
  last_name: Fan
citation:
  ama: Karnieli A, Tziperman O, Roques-Carmes C, Fan S. Decoherence-free many-body
    Hamiltonians in nonlinear waveguide quantum electrodynamics. <i>arXiv</i>. doi:<a
    href="https://doi.org/10.48550/arXiv.2405.20241">10.48550/arXiv.2405.20241</a>
  apa: Karnieli, A., Tziperman, O., Roques-Carmes, C., &#38; Fan, S. (n.d.). Decoherence-free
    many-body Hamiltonians in nonlinear waveguide quantum electrodynamics. <i>arXiv</i>.
    <a href="https://doi.org/10.48550/arXiv.2405.20241">https://doi.org/10.48550/arXiv.2405.20241</a>
  chicago: Karnieli, Aviv, Offek Tziperman, Charles Roques-Carmes, and Shanhui Fan.
    “Decoherence-Free Many-Body Hamiltonians in Nonlinear Waveguide Quantum Electrodynamics.”
    <i>ArXiv</i>, n.d. <a href="https://doi.org/10.48550/arXiv.2405.20241">https://doi.org/10.48550/arXiv.2405.20241</a>.
  ieee: A. Karnieli, O. Tziperman, C. Roques-Carmes, and S. Fan, “Decoherence-free
    many-body Hamiltonians in nonlinear waveguide quantum electrodynamics,” <i>arXiv</i>.
    .
  ista: Karnieli A, Tziperman O, Roques-Carmes C, Fan S. Decoherence-free many-body
    Hamiltonians in nonlinear waveguide quantum electrodynamics. arXiv, 2405.20241.
  mla: Karnieli, Aviv, et al. “Decoherence-Free Many-Body Hamiltonians in Nonlinear
    Waveguide Quantum Electrodynamics.” <i>ArXiv</i>, 2405.20241, doi:<a href="https://doi.org/10.48550/arXiv.2405.20241">10.48550/arXiv.2405.20241</a>.
  short: A. Karnieli, O. Tziperman, C. Roques-Carmes, S. Fan, ArXiv (n.d.).
date_created: 2026-04-09T09:10:41Z
date_published: 2024-05-30T00:00:00Z
date_updated: 2026-04-13T10:53:32Z
day: '30'
doi: 10.48550/arXiv.2405.20241
extern: '1'
external_id:
  arxiv:
  - '2405.20241'
fulldoi: https://doi.org/10.48550/arXiv.2405.20241
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2405.20241
month: '05'
oa: 1
oa_version: Preprint
publication: arXiv
publication_status: submitted
scopus_import: '1'
status: public
title: Decoherence-free many-body Hamiltonians in nonlinear waveguide quantum electrodynamics
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2024'
...