# Quantum mechanics–free subsystem with mechanical oscillators

@article{MercierdeLpinay2021QuantumMS, title={Quantum mechanics–free subsystem with mechanical oscillators}, author={Laure Mercier de L{\'e}pinay and Caspar F. Ockeloen-Korppi and Matthew J. Woolley and Mika A. Sillanp{\"a}{\"a}}, journal={Science}, year={2021}, volume={372}, pages={625 - 629} }

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…

## 37 Citations

Mesoscopic quantum thermo-mechanics: A new frontier of experimental physics

- PhysicsAVS Quantum Science
- 2022

In the last decade, experimentalists have demonstrated their impressive ability to control mechanical modes within mesoscopic objects down to the quantum level: it is now possible to create…

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-mechanics-free subspaces in composite systems with incompatible energy spectra

- Physics
- 2021

It is well established that quantum back action (QBA) can be reduced (or even completely canceled) in composite systems by engineering so-called quantum-mechanics-free subspaces (QMFSs) of commuting…

Non-Gaussian mechanical entanglement with nonlinear optomechanics: generation and verification

- Physics
- 2021

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

Trajectories Without Quantum Uncertainties in Composite Systems with Disparate Energy Spectra

- PhysicsPRX Quantum
- 2022

It is well established that measurement-induced quantum back action (QBA) can be eliminated in composite systems by engineering so-called quantum-mechanics-free subspaces (QMFSs) of commuting…

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…

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…

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…

Optomechanics for quantum technologies

- PhysicsNature Physics
- 2021

The ability to control the motion of mechanical systems through interaction with light has opened the door to a plethora of applications in fundamental and applied physics. With experiments routinely…

Linear quantum systems: a tutorial

- PhysicsAnnual Reviews in Control
- 2022

The purpose of this tutorial is to give a brief introduction to linear quantum control systems. The mathematical model of linear quantum control systems is presented ﬁrst, then some fundamental…

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