Detection of quantum-vacuum field correlations outside the light cone
- URL: http://arxiv.org/abs/2111.02377v1
- Date: Wed, 3 Nov 2021 17:46:09 GMT
- Title: Detection of quantum-vacuum field correlations outside the light cone
- Authors: Francesca Fabiana Settembrini, Frieder Lindel, Alexa Marina Herter,
Stefan Yoshi Buhman, J\`er\^ome Faist
- Abstract summary: According to quantum field theory, empty space is not empty at all, but filled with quantum-vacuum fluctuations.
We experimentally demonstrate the existence of correlations of the vacuum fields for non-causally connected space-time points.
This work marks a first step in analyzing the space-time structure of vacuum correlations in quantum field theory.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: According to quantum field theory, empty space -- the ground state of the
theory with all real excitations removed -- is not empty at all, but filled
with quantum-vacuum fluctuations. Their presence can manifest itself through a
series of phenomena such as the Casimir force, spontaneous emission, or
dispersion forces. These fluctuating fields possess correlations between
space-time points outside the light cone, i.e. between points which are
causally disconnected according to special relativity. A counterintuitive
consequence is that two initially uncorrelated quantum objects in empty space
(the quantum vacuum) which are located in causally disconnected space-time
regions, and therefore unable to exchange information, can become correlated.
Using electro-optic sampling, we have experimentally demonstrated the existence
of correlations of the vacuum fields for non-causally connected space-time
points. This result is obtained by detecting and analyzing vacuum-induced
correlations between two 195 fs laser pulses separated by a time of flight of
470 fs which propagate through a nonlinear crystal. Our theory reveals the vast
majority of the correlations as stemming from space-time points outside the
light cone. This work marks a first step in analyzing the space-time structure
of vacuum correlations in quantum field theory.
Related papers
- Measuring the Evolution of Entanglement in Compton Scattering [101.11630543545151]
The behavior of quantum entanglement during scattering is identical to the behavior of initially classically correlated photons up to a constant factor equal to two.
Our dedicated experiment with photons confirms these results and explains the "Puzzle of Decoherence" observed recently.
arXiv Detail & Related papers (2024-06-20T14:21:23Z) - On the Preservation and Manifestation of Quantum Entanglement [0.0]
Bell experiments have confirmed that quantum entanglement is an inseparable correlation but there is no faster-than-light influence when a local measurement is performed.
We show here that even though the inseparable correlation may be initially created by previous physical interaction between the two particles, the preservation and manifestation of such inseparable correlation are achieved through extremizing an information metric.
arXiv Detail & Related papers (2023-11-10T07:33:13Z) - Real-time dynamics of false vacuum decay [49.1574468325115]
We investigate false vacuum decay of a relativistic scalar field in the metastable minimum of an asymmetric double-well potential.
We employ the non-perturbative framework of the two-particle irreducible (2PI) quantum effective action at next-to-leading order in a large-N expansion.
arXiv Detail & Related papers (2023-10-06T12:44:48Z) - Quantum vacuum effects in non-relativistic quantum field theory [0.0]
We consider a 1D-periodic rotating, interacting non-relativistic setup.
The quantum vacuum energy of such a system is expected to comprise two contributions: a fluctuation-induced quantum contribution and a repulsive centrifugal-like term.
We find a generic, regularization-independent behavior, where the competition between the interaction and rotation can be balanced at some critical ring-size.
arXiv Detail & Related papers (2023-09-14T06:27:16Z) - The strongly driven Fermi polaron [49.81410781350196]
Quasiparticles are emergent excitations of matter that underlie much of our understanding of quantum many-body systems.
We take advantage of the clean setting of homogeneous quantum gases and fast radio-frequency control to manipulate Fermi polarons.
We measure the decay rate and the quasiparticle residue of the driven polaron from the Rabi oscillations between the two internal states.
arXiv Detail & Related papers (2023-08-10T17:59:51Z) - Probing Vacuum Field Fluctuations and Source Radiation Separately in
Space and Time [0.0]
Source radiation (radiation reaction) and vacuum-field fluctuations can be seen as two inseparable contributions to processes such as spontaneous emission.
We propose how they can be individually probed and their space-time structure revealed in electro-optic sampling experiments.
arXiv Detail & Related papers (2023-05-10T18:01:30Z) - Topologically bound states, non-Hermitian skin effect and flat bands,
induced by two-particle interaction [91.3755431537592]
We study theoretically repelling quantum states of two spinless particles in a one-dimensional tight-binding model.
We demonstrate, that when the particles are not identical, their interaction drives nontrivial correlated two-particle states.
arXiv Detail & Related papers (2022-11-11T07:34:54Z) - Entanglement Spheres and a UV-IR connection in Effective Field Theories [0.0]
Two disjoint regions of the latticized, massless scalar field vacuum are numerically demonstrated to become separable at distances beyond the negativity sphere.
It is concluded that two-region vacuum entanglement at increasing separations depends upon the structure of the theory at increasing momentum scales.
arXiv Detail & Related papers (2021-03-27T21:37:01Z) - Enhanced decoherence for a neutral particle sliding on a metallic
surface in vacuum [68.8204255655161]
We show that non-contact friction enhances the decoherence of the moving atom.
We suggest that measuring decoherence times through velocity dependence of coherences could indirectly demonstrate the existence of quantum friction.
arXiv Detail & Related papers (2020-11-06T17:34:35Z) - Motion induced by asymmetric excitation of the quantum vacuum [62.997667081978825]
We study the effect of excitation of the quantum vacuum field induced by its coupling with a moving object.
In the present model, this excitation occurs asymmetrically on different sides of the object.
arXiv Detail & Related papers (2020-09-16T02:02:42Z) - The influence of spacetime curvature on quantum emission in optical
analogues to gravity [0.0]
Quantum fluctuations on curved spacetimes cause the emission of pairs of particles from the quantum vacuum.
We analytically calculate for all the particle flux, correlations and entanglement frequencies.
The quantum state is a diagnostic for the mode conversion in laboratory tests of quantum field theory on curved spacetimes.
arXiv Detail & Related papers (2020-01-16T14:09:37Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.