In quantum optics, a cat state is defined as the quantum superposition of two opposite-phase coherent states of a single optical mode (e.g., a quantum superposition of large positive electric field and large negative electric field): where and are coherent states defined in …

Nov 1, 2024 · Here we demonstrate a long-lived Schrödinger-cat state of optically trapped 173 Yb (I = 5/2) atoms. The cat state, a superposition of two oppositely directed and furthest-apart spin states, is...

Mar 17, 2025 · A high-spin Schrödinger-cat state, a superposition of two maximally opposed spin states, offers unique advantages for precision spin measurements. The high spin quantum number enhances the precession frequency signal, improving measurement resolution. Additionally, cat states exhibit resistance to certain environmental disturbances, reducing ...

Apr 26, 2024 · We demonstrate that, by utilizing interaction-free measurement and the quantum Zeno effect, even a fragile quantum microscopic system can deterministically control and become entangled with strong...

Oct 11, 2023 · Schrödinger cat states, quantum superpositions of macroscopically distinct classical states, are an important resource for quantum communication, quantum metrology and quantum computation....

Aug 1, 2024 · The optical cat state, i.e., photon-added squeezed state, is characterized by homodyne tomography with BHD. The setup also includes a beam splitter (BS), dichroic mirrors (DM), a polarization beam splitter (PBS), a second-harmonic generator (SHG), and an oscilloscope (OSC).

Mar 30, 2021 · In particular, "cat states", i.e., two-component macroscopic quantum superpositions, embody quantum coherence in an accessible way and can be harnessed for fundamental tests and quantum information tasks alike.

Nov 2, 2022 · In this mind-penetrating paper, Schrödinger designed a gedanken experiment to highlight a seemingly absurdity in human’s normal physical mindset of the quantum superposition principle—a cat which is hidden in a box could be simultaneously alive and dead.

Dec 7, 2018 · We analyze a method for the creation, storage and retrieval of optomechanical Schrödinger cat states, in which there is a quantum superposition of two distinct macroscopic states of a mechanical oscillator.

May 1, 2017 · In Schrödinger's proposal, the life and death of a cat are entangled with the state of a decaying atom, which results in a macroscopic quantum-superposition state 1. This setting, originally...