Entanglement Witness for the Weak Equivalence Principle
- URL: http://arxiv.org/abs/2203.11628v1
- Date: Tue, 22 Mar 2022 11:29:56 GMT
- Title: Entanglement Witness for the Weak Equivalence Principle
- Authors: Sougato Bose, Anupam Mazumdar, Martine Schut, Marko Toro\v{s}
- Abstract summary: We will provide a simple protocol based on creating Schr"odinger Cat states in a laboratory to test the fully quantum regime of the equivalence principle.
We will argue that such a quantum protocol is unique with regard to testing especially the weak equivalence principle via witnessing quantum entanglement.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The Einstein equivalence principle is based on the equality of gravitational
mass and inertial mass, which has led to the universality of a free-fall
concept. The principle has been extremely well tested so far and has been
tested with a great precision. However, all these tests and the corresponding
arguments are based on a classical setup where the notion of position and
velocity of the mass is associated with a classical value as opposed to the
quantum entities. Here, we will provide a simple protocol based on creating
Schr\"odinger Cat states in a laboratory to test the fully quantum regime of
the equivalence principle where both matter and gravity are treated at par as a
quantum entity. We will argue that such a quantum protocol is unique with
regard to testing especially the weak equivalence principle via witnessing
quantum entanglement.
Related papers
- What is "quantum" about quantum gravity? [0.0]
We argue that if both the equivalence principle and quantum mechanics continue to survive experimental tests, that this favors epistemic'' interpretations of quantum mechanics.
arXiv Detail & Related papers (2024-05-13T21:19:50Z) - A Theory of Quantum Jumps [44.99833362998488]
We study fluorescence and the phenomenon of quantum jumps'' in idealized models of atoms coupled to the quantized electromagnetic field.
Our results amount to a derivation of the fundamental randomness in the quantum-mechanical description of microscopic systems.
arXiv Detail & Related papers (2024-04-16T11:00:46Z) - Simple Tests of Quantumness Also Certify Qubits [69.96668065491183]
A test of quantumness is a protocol that allows a classical verifier to certify (only) that a prover is not classical.
We show that tests of quantumness that follow a certain template, which captures recent proposals such as (Kalai et al., 2022) can in fact do much more.
Namely, the same protocols can be used for certifying a qubit, a building-block that stands at the heart of applications such as certifiable randomness and classical delegation of quantum computation.
arXiv Detail & Related papers (2023-03-02T14:18:17Z) - The equivalence principle and inertial-gravitational decoherence [0.0]
We look at proposals for "witnessing" quantum gravity via entanglement from the point of view of Bronstein's original objection to a quantization of gravity.
We argue that this "failure" is actually an inherent feature of any quantum description.
In the second part, we speculate on how an exact realization of the equivalence principle might be implemented in an effective quantum field theory.
arXiv Detail & Related papers (2022-10-16T17:14:37Z) - Quantum superposition of spacetimes obeys Einstein's Equivalence
Principle [0.0]
We argue that the Equivalence Principle can be generalised so that it holds for reference frames associated to quantum systems in a superposition of spacetimes.
This procedure reconciles the principle of linear superposition in Quantum Theory with the principle of general covariance and the Equivalence Principle of General Relativity.
arXiv Detail & Related papers (2021-09-03T09:51:18Z) - Ruling out real-valued standard formalism of quantum theory [19.015836913247288]
A quantum game has been developed to distinguish standard quantum theory from its real-number analog.
We experimentally implement the quantum game based on entanglement swapping with a state-of-the-art fidelity of 0.952(1).
Our results disprove the real-number formulation and establish the indispensable role of complex numbers in the standard quantum theory.
arXiv Detail & Related papers (2021-03-15T03:56:13Z) - Observers of quantum systems cannot agree to disagree [55.41644538483948]
We ask whether agreement between observers can serve as a physical principle that must hold for any theory of the world.
We construct examples of (postquantum) no-signaling boxes where observers can agree to disagree.
arXiv Detail & Related papers (2021-02-17T19:00:04Z) - Consistency of quantum computation and the equivalence principle [0.0]
equivalence principle seems to be crucial for analysis of quantum effects in gravity.
In this paper we consider the question if the equivalence principle has to hold for consistency of performing quantum computation in gravitational field.
arXiv Detail & Related papers (2020-12-30T00:47:15Z) - On the testability of the equivalence principle as a gauge principle
detecting the gravitational $t^3$ phase [0.0]
We point out that by following the same approach as used for other classical principles, one can, for weak fields, obtain a straightforward quantum formulation of the principle.
We draw attention to a recently performed test that confirms the Equivalence Principle in this form and discuss its implications.
arXiv Detail & Related papers (2020-04-24T09:32:27Z) - From a quantum theory to a classical one [117.44028458220427]
We present and discuss a formal approach for describing the quantum to classical crossover.
The method was originally introduced by L. Yaffe in 1982 for tackling large-$N$ quantum field theories.
arXiv Detail & Related papers (2020-04-01T09:16:38Z) - Quantum Mechanical description of Bell's experiment assumes Locality [91.3755431537592]
Bell's experiment description assumes the (Quantum Mechanics-language equivalent of the classical) condition of Locality.
This result is complementary to a recently published one demonstrating that non-Locality is necessary to describe said experiment.
It is concluded that, within the framework of Quantum Mechanics, there is absolutely no reason to believe in the existence of non-Local effects.
arXiv Detail & Related papers (2020-02-27T15:04:08Z)
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.