---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '21561'
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 intrawaveguide squeezing,
    and we 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: L012014
article_processing_charge: No
article_type: letter_note
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>Physical Review
    Research</i>. 2025;7(1). doi:<a href="https://doi.org/10.1103/physrevresearch.7.l012014">10.1103/physrevresearch.7.l012014</a>
  apa: Karnieli, A., Tziperman, O., Roques-Carmes, C., &#38; Fan, S. (2025). Decoherence-free
    many-body Hamiltonians in nonlinear waveguide quantum electrodynamics. <i>Physical
    Review Research</i>. American Physical Society . <a href="https://doi.org/10.1103/physrevresearch.7.l012014">https://doi.org/10.1103/physrevresearch.7.l012014</a>
  chicago: Karnieli, Aviv, Offek Tziperman, Charles Roques-Carmes, and Shanhui Fan.
    “Decoherence-Free Many-Body Hamiltonians in Nonlinear Waveguide Quantum Electrodynamics.”
    <i>Physical Review Research</i>. American Physical Society , 2025. <a href="https://doi.org/10.1103/physrevresearch.7.l012014">https://doi.org/10.1103/physrevresearch.7.l012014</a>.
  ieee: A. Karnieli, O. Tziperman, C. Roques-Carmes, and S. Fan, “Decoherence-free
    many-body Hamiltonians in nonlinear waveguide quantum electrodynamics,” <i>Physical
    Review Research</i>, vol. 7, no. 1. American Physical Society , 2025.
  ista: Karnieli A, Tziperman O, Roques-Carmes C, Fan S. 2025. Decoherence-free many-body
    Hamiltonians in nonlinear waveguide quantum electrodynamics. Physical Review Research.
    7(1), L012014.
  mla: Karnieli, Aviv, et al. “Decoherence-Free Many-Body Hamiltonians in Nonlinear
    Waveguide Quantum Electrodynamics.” <i>Physical Review Research</i>, vol. 7, no.
    1, L012014, American Physical Society , 2025, doi:<a href="https://doi.org/10.1103/physrevresearch.7.l012014">10.1103/physrevresearch.7.l012014</a>.
  short: A. Karnieli, O. Tziperman, C. Roques-Carmes, S. Fan, Physical Review Research
    7 (2025).
date_created: 2026-03-30T12:22:47Z
date_published: 2025-01-21T00:00:00Z
date_updated: 2026-04-27T10:32:06Z
day: '21'
ddc:
- '530'
doi: 10.1103/physrevresearch.7.l012014
extern: '1'
external_id:
  arxiv:
  - '2405.20241'
fulldoi: https://doi.org/10.1103/physrevresearch.7.l012014
intvolume: '         7'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1103/PhysRevResearch.7.L012014
month: '01'
oa: 1
oa_version: Published Version
publication: Physical Review Research
publication_identifier:
  issn:
  - 2643-1564
publication_status: published
publisher: 'American Physical Society '
quality_controlled: '1'
scopus_import: '1'
status: public
title: Decoherence-free many-body Hamiltonians in nonlinear waveguide quantum electrodynamics
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 7
year: '2025'
...