Related Experiment Video
Updated: Jun 27, 2025

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
Universal Control of Symmetric States Using Spin Squeezing
Nir Gutman1, Alexey Gorlach1, Offek Tziperman1
1Technion-Israel Institute of Technology, Haifa 32000, Israel.
Researchers developed a new method for controlling symmetric quantum states using only rotations and spin squeezing. This technique enables the creation of complex states like Schrödinger
Area of Science:
- Quantum Science and Technology
- Quantum Information Processing
- Many-Body Quantum Systems
Background:
- Quantum many-body system manipulation is essential.
- Symmetric entangled quantum states are of increasing interest.
- Creating and controlling these symmetric states is challenging.
Purpose of the Study:
- To introduce a universal control method for symmetric quantum states.
- To propose a scheme using only coherent rotations and spin squeezing.
- To demonstrate protocols for creating specific symmetric states.
Main Methods:
- Utilizing coherent rotations for quantum state manipulation.
- Employing spin squeezing techniques for control.
- Developing protocols for generating Schrödinger's cat and Gottesman-Kitaev-Preskill states.
Main Results:
- A method for universal control of symmetric quantum states is presented.
- Protocols for creating diverse symmetric states are demonstrated.
- Successful transfer of symmetric states to photonic states via spontaneous emission.
Conclusions:
- The proposed method offers a powerful approach for engineering quantum states.
- This technique facilitates the creation of desired quantum photonic states.
- The scheme provides a pathway for advancing quantum information technologies.
Related Concept Videos
Atomic Nuclei: Nuclear Spin State Overview
Spin–Spin Coupling Constant: Overview
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
The Pauli Exclusion Principle
Symmetry in Maxwell's Equations
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the...

