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:2206.08828 · Physical Review X

Creation of Optical Cat and GKP States Using Shaped Free Electrons

Raphael Dahan, Gefen Baranes, Alexey A. Gorlach, Ron Ruimy, Nicholas Rivera, Ido E. Kaminer

Published Jul 6, 2023• 57 citations
arXivHTMLPDF

Abstract

A new approach to generating quantum states of light most suitable for robust quantum computing draws on one of the most basic interactions in physics---the interaction between free electrons and photons.
DOI
10.1103/physrevx.13.031001

Related papers

Creation of strong cat states by the light-matter interaction of atoms in a photonic time crystal

Lior Bar-Hillel, Alexey Gerlach, Yonatan Plotnik +2 more

We study light-matter interactions of an atom in a photonic time-crystal, finding how to harness this interaction for the creation of strong cat states.

•Jan 1, 2026•0 citations

Creation of Photonic Cat and GKP States Using Modulated Electrons

Gefen Baranes, Raphael Dahan, Alexey A. Gorlach +3 more

We show how the coherent shaping of free-electron wavefunctions enables the construction of coherent grid states. We present a scheme to create Schrödinger cat and GKP states, which are sought-after for fault-tolerant photonic quantum computation.

Conference on Lasers and Electro-Optics•Jan 1, 2022•2 citations

Creating optical cat states entangled with an atom

Bastian Hacker, Stephan Welte, Severin Daiss +3 more

Bulletin of the American Physical Society•May 30, 2019•0 citations

Two-Photon Gate and Creation of Optical Cat States using One Atom in a Cavity

Bastian Hacker

•Jan 1, 2019•0 citations

Logical states for fault-tolerant quantum computation with propagating light

Shunya Konno, Warit Asavanant, Fumiya Hanamura +14 more

To harness the potential of a quantum computer, quantum information must be protected against error by encoding it into a logical state that is suitable for quantum error correction. The Gottesman-Kitaev-Preskill (GKP) qubit is a promising candidate because the required multiqubit operations are readily available at optical frequency. To date, however, GKP qubits have been demonstrated only at mechanical and microwave frequencies. We realized a GKP state in propagating light at telecommunication wavelength and verified it through homodyne measurements without loss corrections. The generation is based on interference of cat states, followed by homodyne measurements. Our final states exhibit nonclassicality and non-Gaussianity, including the trident shape of faint instances of GKP states. Improvements toward brighter, multipeaked GKP qubits will be the basis for quantum computation with light.

Science•Jan 18, 2024•163 citations

Free-Electron Radiation in the Form of Optical Cat and GKP States

Gefen Baranes, Raphael Dahan, Alexey A. Gorlach +3 more

We show how coherent modulation of free-electron wavefunctions can alter the quantum nature of the light they emit. We utilize this concept to create Schrödinger-cat and GKP states, which are sought-after for fault-tolerant quantum computation.

Quantum 2.0 Conference and Exhibition•Jan 1, 2022•1 citation
To harness the potential of a quantum computer, quantum information must be protected against error by encoding it into a logical state that is suitable for quantum error correction. The Gottesman-Kitaev-Preskill (GKP) qubit is a promising candidate because the required multiqubit operations are readily available at optical frequency. To date, however, GKP qubits have been demonstrated only at mechanical and microwave frequencies. We realized a GKP state in propagating light at telecommunication wavelength and verified it through homodyne measurements without loss corrections. The generation is based on interference of cat states, followed by homodyne measurements. Our final states exhibit nonclassicality and non-Gaussianity, including the trident shape of faint instances of GKP states. Improvements toward brighter, multipeaked GKP qubits will be the basis for quantum computation with light.