# Acceleration noise constraints on gravity-induced entanglement

@article{Groardt2020AccelerationNC, title={Acceleration noise constraints on gravity-induced entanglement}, author={Andr{\'e} Gro{\ss}ardt}, journal={arXiv: General Relativity and Quantum Cosmology}, year={2020} }

It has been proposed that quantum features of the gravitational field can be exposed experimentally by employing gravity as a mediator of entanglement. We show that in order to witness this type of entanglement experimentally, strong limits on acceleration noise, which has been neglected in previous work, must be overcome. In the case of two particles of similar mass, Casimir-Polder forces lead to a fundamental limit of tenths of femtometers per second squared per root Hertz. Limits are between…

## 7 Citations

### A superfluid He4 version of a test on QG versus CG: feasibility with demonstrated methods

- Physics
- 2020

A field, which mediates entanglement between two quantum systems, must be of quantum nature. Attempts to witness this way quantumlike features of the gravitational field with tabletop experiments are…

### Relative Acceleration Noise Mitigation for Entangling Masses via Quantum Gravity.

- Physics
- 2020

Relative accelerations between a mass undergoing matter-wave interference and the associated apparatus, when not tracked, can appear as dephasing. It can be an important limiting factor in…

### Relative acceleration noise mitigation for nanocrystal matter-wave interferometry: Applications to entangling masses via quantum gravity

- PhysicsPhysical Review Research
- 2021

Matter-wave interferometers with large momentum transfers, irrespective of speciﬁc implementations, will face a universal dephasing due to relative accelerations between the interferometric mass and…

### Non-Gaussian entanglement in gravitating masses: The role of cumulants

- PhysicsPhysical Review D
- 2022

We develop an entanglement criterion with thirdand fourth-order cumulants to detect the entanglement of non-Gaussian states. The efficiency of the entanglement criterion is investigated for…

### Dephasing and inhibition of spin interference from semi-classical self-gravitation

- PhysicsClassical and Quantum Gravity
- 2021

We present a detailed derivation of a model to study effects of self-gravitation from semi-classical gravity, described by the Schrödinger–Newton equation, employing spin superposition states in…

### Field-induced entanglement in spatially superposed objects

- PhysicsPhysical Review D
- 2021

We discuss the generation of field-induced entanglement between two objects each in a superposition of two trajectories. The objects have currents coupled to local quantum fields, and the currents…

### Entanglement and decoherence of massive particles due to gravity

- Physics
- 2020

We analyze the dynamics of gravity-induced entanglement for N massive particles. Considering a linear configuration of these particles, we investigate the entanglement between a specific pair of…

## References

SHOWING 1-10 OF 33 REFERENCES

### Spin Entanglement Witness for Quantum Gravity.

- PhysicsPhysical review letters
- 2017

It is shown that despite the weakness of gravity, the phase evolution induced by the gravitational interaction of two micron size test masses in adjacent matter-wave interferometers can detectably entangle them even when they are placed far apart enough to keep Casimir-Polder forces at bay.

### Decoherence due to gravitational time dilation: Analysis of competing decoherence effects

- Physics
- 2016

### Measurement Analysis and Quantum Gravity

- Physics
- 2008

We consider the question of whether consistency arguments based on measurement theory show that the gravitational field must be quantized. Motivated by the argument of Eppley and Hannah, we apply a…

### Entanglement dynamics of two mesoscopic objects with gravitational interaction

- PhysicsThe European Physical Journal D
- 2020

Abstract We analyse the entanglement dynamics of two particles interacting through gravity in a setup similar to the recently proposed experiments that aim to test quantum signatures of gravity [S.…

### Macroscopic quantum mechanics in a classical spacetime.

- PhysicsPhysical review letters
- 2013

By averaging over motions of the objects' internal degrees of freedom, an effective Schrödinger-Newton equation is obtained for their centers of mass, which can be monitored and manipulated at quantum levels by state-of-the-art optomechanics experiments.

### Is quantum gravity necessary

- Physics
- 2008

In view of the enormous difficulties we seem to face in quantizing general relativity, we should perhaps consider the possibility that gravity is a fundamentally classical interaction. Theoretical…

### The Schrödinger–Newton equation and its foundations

- Physics, Mathematics
- 2014

The necessity of quantising the gravitational field is still subject to an open debate. In this paper we compare the approach of quantum gravity, with that of a fundamentally semi-classical theory of…

### The neutron interferometer as a device for illustrating the strange behavior of quantum systems

- Physics
- 1983

The neutron interferometer is a unique instrument that allows one to construct a neutron wave packet of macroscopic size, divide it into two components separated by centimeters, and then coherently…

### Gravitational decoherence of atomic interferometers

- Physics
- 2002

Abstract:We study the decoherence of atomic interferometers due to the scattering of stochastic gravitational waves. We evaluate the “direct” gravitational effect registered by the phase of the…

### Sub-Femto-g Free Fall for Space-Based Gravitational Wave Observatories: LISA Pathfinder Results.

- PhysicsPhysical review letters
- 2016

We report the first results of the LISA Pathfinder in-flight experiment. The results demonstrate that two free-falling reference test masses, such as those needed for a space-based gravitational wave…