# Direct observation of deterministic macroscopic entanglement

@article{Kotler2021DirectOO, title={Direct observation of deterministic macroscopic entanglement}, author={Shlomi Kotler and Gabriel A. Peterson and Ezad Shojaee and Florent Lecocq and Katarina Cicak and Alex Kwiatkowski and Shawn Geller and Scott Glancy and Emanuel Knill and Raymond W. Simmonds and Jos{\'e} Aumentado and John D. Teufel}, journal={Science}, year={2021}, volume={372}, pages={622 - 625} }

Quantum entanglement goes large Quantum entanglement occurs when two separate entities become strongly linked in a way that cannot be explained by classical physics; it is a powerful resource in quantum communication protocols and advanced technologies that aim to exploit the enhanced capabilities of quantum systems. To date, entanglement has generally been limited to microscopic quantum units such as pairs or multiples of single ions, atoms, photons, and so on. Kotler et al. and Mercier de L…

## 47 Citations

Quantum mechanics–free subsystem with mechanical oscillators

- PhysicsScience
- 2021

It is shown how it is possible to measure an oscillator without quantum back-action of the measurement by constructing one effective oscillator from two physical oscillators by realizes such a quantum mechanics–free subsystem using two micromechanical oscillators, and shows the measurements of two collective quadratures while evading the quantumBack-action on both of them.

Quantum entanglement: Bell's inequality trivially violated also classically

- Physics
- 2021

Quantum entanglement manifests in the perfect correlation between particles or photons separated by space and time beyond causal interference. However, classical covariance between vectorial…

Dissipative optomechanical preparation of non-Gaussian mechanical entanglement

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Mesoscopic and macroscopic quantum correlations in photonic, atomic and optomechanical systems

- Physics
- 2021

This paper reviews the progress that has been made in our knowledge of quantum correlations at the mesoscopic and macroscopic level. We begin by summarizing the Einstein-Podolsky-Rosen (EPR) argument…

Quantum state preparation and tomography of entangled mechanical resonators.

- PhysicsNature
- 2022

Precisely engineered mechanical oscillators keep time, filter signals and sense motion, making them an indispensable part of the technological landscape of today. These unique capabilities motivate…

Quantum Network with Magnonic and Mechanical Nodes

- PhysicsPRX Quantum
- 2021

A quantum network consisting of magnonic and mechanical nodes connected by light is proposed. Recent years have witnessed a significant development in cavity magnonics based on collective spin…

Two-mode Schrödinger-cat states with nonlinear optomechanics: generation and verification of non-Gaussian mechanical entanglement

- PhysicsQuantum Science and Technology
- 2022

Cavity quantum optomechanics has emerged as a new platform for quantum science and technology with applications ranging from quantum-information processing to tests of the foundations of physics. Of…

Noise-Tolerant Optomechanical Entanglement via Synthetic Magnetism

- PhysicsPhysical Review Letters
- 2022

Entanglement of light and multiple vibrations is a key resource for multi-channel quantum information processing and memory. However, entanglement generation is generally suppressed, or even fully…

Entanglement Thresholds of Doubly Parametric Quantum Transducers

- PhysicsPhysical Review Applied
- 2022

Doubly-parametric quantum transducers, such as electro-opto-mechanical devices, are quickly approaching quantum operation as decoherence mechanisms such as thermal noise, loss, and limited…

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