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  • Open Access

Adaptive non-Gaussian quantum state engineering

Valerio Crescimanna1,2,*, Shang Yu1,3, Khabat Heshami2,4,5, and Raj B. Patel1,3,†

  • *Contact author: vcres052@uottawa.ca
  • †Contact author: raj.patel1@imperial.ac.uk
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Phys. Rev. A 112, 053705 – Published 6 November, 2025

DOI: https://doi.org/10.1103/jhkz-84dz

Abstract

Non-Gaussian quantum states of bosons are a key resource in quantum information science with applications ranging from quantum metrology to fault-tolerant quantum computation. Generation of photonic non-Gaussian resource states, such as Schrödinger's cat and Gottesman-Kitaev-Preskill states, is challenging. In this work, we go beyond existing passive architectures and explore a broad set of adaptive schemes. Our numerical results demonstrate a consistent improvement in the probability of success and fidelity of generating these non-Gaussian quantum states with equivalent resources. We also explore the effect of loss as the primary limiting factor and observe that adaptive schemes lead to more desirable outcomes in terms of overall probability of success and loss tolerance. Our work offers a versatile framework for non-Gaussian resource state generation with the potential to guide future experimental implementations.

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Phys. Rev. A 112, 053705– Published 6 November, 2025
  • Received 19 February 2025
  • Accepted 22 September 2025
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