Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:1409.1077 · Optics Communications

Feasible quantum engineering of quantum multiphoton superpositions

Magdalena Stobińska

Published Jul 22, 2014• 2 citations
arXivHTMLPDF
DOI
10.1016/j.optcom.2014.07.030

Related papers

Multiphoton quantum optics and quantum state engineering

Fabio Dell’Anno, Silvio De Siena, Fabrizio Illuminati

arXiv:quant-ph/0701050•Physics Reports•Mar 7, 2006•308 citations

Quantum superposition of parametrically amplified multiphoton pure states

F. De Martini

Physics Letters A•Dec 1, 1998•36 citations

Investigation on the quantum-to-classical transition by optical parametric amplification: Generation and detection of multiphoton quantum superposition

F. De Martini, Fabio Sciarrino

Optics Communications•Aug 20, 2014•2 citations

Engineering multiphoton states for linear optics computation

Paolo Aniello, Cosmo Lupo, M. Napolitano +1 more

arXiv:quant-ph/0606002•The European Physical Journal D•Dec 6, 2006•3 citations

Unlocking multiphoton emission from a single-photon source through mean-field engineering

Sang Kyu Kim, Eduardo Zubizarreta Casalengua, Katarina Boos +9 more

In the single-photon emission from a two-level system, multiphotons are generally regarded as accidental, undesired, and unrelated to the mechanism. In coherently driven systems, however, they form the cornerstone of single-photon emission, which arises from quantum interferences between virtual multiphoton fluctuations of the emitter and the Poissonian superposition of all number states induced by the driving. Here, we demonstrate how one can control the multiphoton dynamics by disrupting these quantum interferences through an external homodyne control of the emitter's mean field. Experimentally, we observed a transition from single-photon to multiphoton emission, up to three-photon correlations. We show that, counterintuitively, quantum fluctuations always play a major qualitative role, even and, in fact, especially when their quantitative contribution is vanishing. Our findings provide distinct insights into the paradoxical character of quantum mechanics and open pathways for mean-field engineering as a tool for precision multiphoton control.

arXiv:2411.10441•Science Advances•Oct 29, 2025•6 citations

Arbitrary high-fidelity binomial codes from multiphoton spin-boson interactions

Pradip Laha, Peter van Loock

Encoding a qubit in the continuous degrees of freedom of a quantum system, such as bosonic modes, is a powerful alternative to modern quantum error correction (QEC). Among the most prominent bosonic QEC codes, binomial codes provide protection against loss and dephasing errors by encoding logical states in finite superpositions of Fock states with binomially weighted coefficients. While much attention has been given to their error-correcting capabilities and integration into fault-tolerant architectures, efficient methods for generating arbitrary binomial codewords remain scarce. In this work, we propose a scheme for generating these codewords by exploiting nonlinear multiphoton interactions between a continuous-variable bosonic mode (oscillator) and a two-level system (spin/qubit). Our proposed scheme assumes the ability to prepare the oscillator in an arbitrary Fock state and the qubit in an arbitrary superposition of its basis states and access to arbitrarily high multiphoton interactions. To enhance the experimental feasibility of our scheme, we further demonstrate how to reduce the required order parameter of multiphoton interactions by a factor of two for a special class of code states.

arXiv:2507.08585•Physical Review Research•Feb 2, 2026•1 citation
In the single-photon emission from a two-level system, multiphotons are generally regarded as accidental, undesired, and unrelated to the mechanism. In coherently driven systems, however, they form the cornerstone of single-photon emission, which arises from quantum interferences between virtual multiphoton fluctuations of the emitter and the Poissonian superposition of all number states induced by the driving. Here, we demonstrate how one can control the multiphoton dynamics by disrupting these quantum interferences through an external homodyne control of the emitter's mean field. Experimentally, we observed a transition from single-photon to multiphoton emission, up to three-photon correlations. We show that, counterintuitively, quantum fluctuations always play a major qualitative role, even and, in fact, especially when their quantitative contribution is vanishing. Our findings provide distinct insights into the paradoxical character of quantum mechanics and open pathways for mean-field engineering as a tool for precision multiphoton control.
Encoding a qubit in the continuous degrees of freedom of a quantum system, such as bosonic modes, is a powerful alternative to modern quantum error correction (QEC). Among the most prominent bosonic QEC codes, binomial codes provide protection against loss and dephasing errors by encoding logical states in finite superpositions of Fock states with binomially weighted coefficients. While much attention has been given to their error-correcting capabilities and integration into fault-tolerant architectures, efficient methods for generating arbitrary binomial codewords remain scarce. In this work, we propose a scheme for generating these codewords by exploiting nonlinear multiphoton interactions between a continuous-variable bosonic mode (oscillator) and a two-level system (spin/qubit). Our proposed scheme assumes the ability to prepare the oscillator in an arbitrary Fock state and the qubit in an arbitrary superposition of its basis states and access to arbitrarily high multiphoton interactions. To enhance the experimental feasibility of our scheme, we further demonstrate how to reduce the required order parameter of multiphoton interactions by a factor of two for a special class of code states.