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Quantum Information meets High-Energy Physics: Input to the update of the European Strategy for Particle Physics [46.35100548313364]
Some of the most astonishing and prominent properties of Quantum Mechanics, such as entanglement and Bell nonlocality, have only been studied extensively in dedicated low-energy laboratory setups. The feasibility of these studies in the high-energy regime explored by particle colliders was only recently shown, and has gathered the attention of the scientific community.
arXiv Detail & Related papers (2025-03-31T18:00:01Z)
Table-top nanodiamond interferometer enabling quantum gravity tests [34.82692226532414]
We present a feasibility study for a table-top nanodiamond-based interferometer. By relying on quantum superpositions of steady massive objects our interferometer may allow exploiting just small-range electromagnetic fields.
arXiv Detail & Related papers (2024-05-31T17:20:59Z)
Partial confinement in a quantum-link simulator [25.949731736282295]
We show that the spin-1 quantum link model provides an excellent platform for exploring partial confinement. We conduct a comprehensive investigation of the physics emerging from partial confinement in both the context of equilibrium and non-equilibrium dynamics. Our work offers a simple and feasible routine for the study of confinement-related physics in the state-of-the-art artificial quantum systems.
arXiv Detail & Related papers (2024-04-28T06:55:08Z)
Testing Quantum Gravity using Pulsed Optomechanical Systems [13.650870855008112]
We consider the Schr"odinger-Newton (SN) theory and the Correlated Worldline (CWL) theory, and show that they can be distinguished from conventional quantum mechanics. We find that discriminating between the theories will be very difficult until experimental control over low frequency quantum optomechanical systems is pushed further.
arXiv Detail & Related papers (2023-11-03T17:06:57Z)
Gravity-induced entanglement between two massive microscopic particles in curved spacetime: I.The Schwarzschild background [2.915799083273604]
The gravitational field within curved spacetime can induce observable entanglement between particle pairs in both scenarios. This approach establishes a more pronounced and extensive manifestation of the quantum influences of gravity. These experiments hold immense advantages and implications for the detection of quantum gravity.
arXiv Detail & Related papers (2023-08-31T08:16:43Z)
Gravitational Harmonium: Gravitationally Induced Entanglement in a Harmonic Trap [0.0]
We give a non-relativistic quantum mechanical analysis of the gravitationally induced entanglement of this system. The present work serves as the basis for a subsequent investigation, which models this system using quantum field theory.
arXiv Detail & Related papers (2023-02-10T19:00:04Z)
Photon-mediated Stroboscopic Quantum Simulation of a $\mathbb{Z}_{2}$ Lattice Gauge Theory [58.720142291102135]
Quantum simulation of lattice gauge theories (LGTs) aims at tackling non-perturbative particle and condensed matter physics. One of the current challenges is to go beyond 1+1 dimensions, where four-body (plaquette) interactions, not contained naturally in quantum simulating devices, appear. We show how to prepare the ground state and measure Wilson loops using state-of-the-art techniques in atomic physics.
arXiv Detail & Related papers (2021-07-27T18:10:08Z)
Relativistic Particle Motion and Quantum Optics in a Weak Gravitational Field [0.0]
Long-baseline quantum experiments in space make it necessary to better understand the time evolution of relativistic quantum particles in a weakly varying gravitational field. We explain why conventional treatments by traditional quantum optics and atomic physics may become inadequate when faced with issues related to locality, simultaneity, signaling, causality, etc. Adding the effects of gravitation, we are led to Quantum Field Theory in Curved Spacetime (QFTCST) This well-established theory should serve as the canonical reference theory to a large class of proposed space experiments testing the foundations of gravitation and quantum theory.
arXiv Detail & Related papers (2021-06-23T16:32:45Z)
Constraints on probing quantum coherence to infer gravitational entanglement [0.0]
Gravity mediated entanglement generation so far appears to be the key ingredient for a potential experiment. With measurements performed only on the atoms, a coherence revival test is proposed for verifying this entanglement generation. We explore formulations of such a protocol, and specifically find that in the envisioned regime of operation with high thermal excitation, semi-classical models, where there is no concept of entanglement, also give the same experimental signatures.
arXiv Detail & Related papers (2021-06-15T15:29:35Z)
Probing the limits of quantum theory with quantum information at subnuclear scales [0.13844779265721088]
We propose a new theoretical framework of Q-data tests. It recognises the established validity of quantum theory, but allows for more general -- 'post-quantum' -- scenarios in certain physical regimes.
arXiv Detail & Related papers (2021-03-22T16:47:39Z)
Tests of Fundamental Quantum Mechanics and Dark Interactions with Low Energy Neutrons -- Extended Version [1.5749416770494706]
Despite being unstable, free neutrons live long enough to be used as test particles in interferometric, spectroscopic, and scattering experiments. neutrons offer the opportunity to observe the effects of gravity and hypothetical dark forces on extended matter wave functions.
arXiv Detail & Related papers (2020-12-16T16:15:18Z)
Spin Entanglement and Magnetic Competition via Long-range Interactions in Spinor Quantum Optical Lattices [62.997667081978825]
We study the effects of cavity mediated long range magnetic interactions and optical lattices in ultracold matter. We find that global interactions modify the underlying magnetic character of the system while introducing competition scenarios. These allow new alternatives toward the design of robust mechanisms for quantum information purposes.
arXiv Detail & Related papers (2020-11-16T08:03:44Z)
Quantum Hall phase emerging in an array of atoms interacting with photons [101.18253437732933]
Topological quantum phases underpin many concepts of modern physics. Here, we reveal that the quantum Hall phase with topological edge states, spectral Landau levels and Hofstadter butterfly can emerge in a simple quantum system. Such systems, arrays of two-level atoms (qubits) coupled to light being described by the classical Dicke model, have recently been realized in experiments with cold atoms and superconducting qubits.
arXiv Detail & Related papers (2020-03-18T14:56:39Z)
Probing the Universality of Topological Defect Formation in a Quantum Annealer: Kibble-Zurek Mechanism and Beyond [46.39654665163597]
We report on experimental tests of topological defect formation via the one-dimensional transverse-field Ising model. We find that the quantum simulator results can indeed be explained by the KZM for open-system quantum dynamics with phase-flip errors. This implies that the theoretical predictions of the generalized KZM theory, which assumes isolation from the environment, applies beyond its original scope to an open system.
arXiv Detail & Related papers (2020-01-31T02:55:35Z)
Quantum decoherence by Coulomb interaction [58.720142291102135]
We present an experimental study of the Coulomb-induced decoherence of free electrons in a superposition state in a biprism electron interferometer close to a semiconducting and metallic surface. The results will enable the determination and minimization of specific decoherence channels in the design of novel quantum instruments.
arXiv Detail & Related papers (2020-01-17T04:11:44Z)

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