Random Majorana Constellations
- URL: http://arxiv.org/abs/2112.01612v1
- Date: Thu, 2 Dec 2021 21:41:03 GMT
- Title: Random Majorana Constellations
- Authors: A. Z. Goldberg, J. L. Romero, \'A. S. Sanz, A. B. Klimov, G. Leuchs,
and L. L. S\'anchez-Soto
- Abstract summary: Even the most classical states are still governed by quantum theory.
A fantastic array of physical systems can be described by their Majorana constellations of points on the surface of a sphere.
If these points are chosen randomly, how quantum will the resultant state be, on average?
We explore this simple conceptual question in detail, investigating the quantum properties of the resulting random states.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Even the most classical states are still governed by quantum theory. A
fantastic array of physical systems can be described by their Majorana
constellations of points on the surface of a sphere, where concentrated
constellations and highly symmetric distributions correspond to the least and
most quantum states, respectively. If these points are chosen randomly, how
quantum will the resultant state be, on average? We explore this simple
conceptual question in detail, investigating the quantum properties of the
resulting random states. We find classical states to be far from the norm, even
in the large-number-of-particles limit, where classical intuition often
replaces quantum properties, making random Majorana constellations peculiar,
intriguing, and useful.
Related papers
- Area laws from classical entropies [0.0]
The area law-like scaling of local quantum entropies is the central characteristic of the entanglement inherent in quantum fields, many-body systems, and spacetime.
We show that it equally manifests in classical entropies over measurement distributions when vacuum contributions dictated by the uncertainty principle are subtracted.
arXiv Detail & Related papers (2024-04-18T16:52:56Z) - The Relation between Wavefunction and 3D Space Implies Many Worlds with
Local Beables and Probabilities [0.0]
We show that the quantum wavefunctional can be seen as a set of classical fields on the 3D space aggregated by a measure.
We obtain a complete description of the wavefunctional in terms of classical local beables.
arXiv Detail & Related papers (2023-06-27T12:22:41Z) - Schr\"odinger cat states of a 16-microgram mechanical oscillator [54.35850218188371]
The superposition principle is one of the most fundamental principles of quantum mechanics.
Here we demonstrate the preparation of a mechanical resonator with an effective mass of 16.2 micrograms in Schr"odinger cat states of motion.
We show control over the size and phase of the superposition and investigate the decoherence dynamics of these states.
arXiv Detail & Related papers (2022-11-01T13:29:44Z) - Exact classical limit of the quantum bouncer [0.0]
We develop a systematic approach to determine the classical limit of periodic quantum systems.
We show that for realistic systems, the quantum corrections are strongly suppressed (by a factor of $sim 10-10$) with respect to the classical result.
arXiv Detail & Related papers (2022-08-28T19:44:15Z) - Measurement of a quantum system with a classical apparatus using
ensembles on configuration space [0.48733623015338234]
We use the approach of ensembles on configurations space to give a detailed account of a classical apparatus measuring the position of a quantum particle.
We show that the probability of the pointer of the classical apparatus is left in a state that corresponds to the probability of the quantum particle.
Since this formalism incorporates uncertainties and finite measurement precision, it is well suited for metrological applications.
arXiv Detail & Related papers (2022-05-19T15:48:12Z) - No-signalling constrains quantum computation with indefinite causal
structure [45.279573215172285]
We develop a formalism for quantum computation with indefinite causal structures.
We characterize the computational structure of higher order quantum maps.
We prove that these rules, which have a computational and information-theoretic nature, are determined by the more physical notion of the signalling relations between the quantum systems.
arXiv Detail & Related papers (2022-02-21T13:43:50Z) - Probing Topological Spin Liquids on a Programmable Quantum Simulator [40.96261204117952]
We use a 219-atom programmable quantum simulator to probe quantum spin liquid states.
In our approach, arrays of atoms are placed on the links of a kagome lattice and evolution under Rydberg blockade creates frustrated quantum states.
The onset of a quantum spin liquid phase of the paradigmatic toric code type is detected by evaluating topological string operators.
arXiv Detail & Related papers (2021-04-09T00:18:12Z) - Preparing random states and benchmarking with many-body quantum chaos [48.044162981804526]
We show how to predict and experimentally observe the emergence of random state ensembles naturally under time-independent Hamiltonian dynamics.
The observed random ensembles emerge from projective measurements and are intimately linked to universal correlations built up between subsystems of a larger quantum system.
Our work has implications for understanding randomness in quantum dynamics, and enables applications of this concept in a wider context.
arXiv Detail & Related papers (2021-03-05T08:32:43Z) - Quantum concepts in optical polarization [0.35180162330725556]
We comprehensively review the quantum theory of the polarization properties of light.
In particular, the classical degree of polarization produces unsatisfactory results in the quantum domain.
In intrinsically nonclassical states are explored and their potential applications in quantum technologies are discussed.
arXiv Detail & Related papers (2020-11-08T13:33:19Z) - 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 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)
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.