A statistical model for quantum spin and photon number states
- URL: http://arxiv.org/abs/2304.13535v2
- Date: Thu, 19 Dec 2024 13:11:57 GMT
- Title: A statistical model for quantum spin and photon number states
- Authors: Sam Powers, Guangpeng Xu, Herbert Fotso, Tim Thomay, Dejan Stojkovic,
- Abstract summary: We show that the probabilities that arise in quantum theory can be reduced to counting more fundamental ontic states.<n>A completely self contained formalism is developed for the purpose of organizing and counting these ontic states.<n>This formalism is then used to calculate probability distributions associated with particles of arbitrary spin interacting with sequences of two rotated Stern-Gerlach detectors.
- Score: 0.0
- License: http://creativecommons.org/licenses/by-nc-sa/4.0/
- Abstract: The most irreducible way to represent information is a sequence of two symbols. In this paper, we construct quantum states using this basic building block. Specifically, we show that the probabilities that arise in quantum theory can be reduced to counting more fundamental ontic states, which we interpret as event networks and model using sequences of 0's and 1's. A completely self contained formalism is developed for the purpose of organizing and counting these ontic states, which employs the finite cyclic group $\mathbb{Z}_2 = \{0, 1\}$, basic set theory, and combinatorics. This formalism is then used to calculate probability distributions associated with particles of arbitrary spin interacting with sequences of two rotated Stern-Gerlach detectors. These calculations are compared with the predictions of non-relativistic quantum mechanics and shown to deviate slightly. This deviation can be made arbitrarily small and does not lead to violations of relevant no-go theorems, such as Bell's inequalities, the Kochen-Specker theorem, or the PBR theorem. The proposed model is then extended to an optical system involving photon number states passing through a beam splitter. Leveraging recent advancements in high precision experiments on these systems, we then propose a means of testing the new model using a tabletop experiment.
Related papers
- A pseudo-random and non-point Nelson-style process [49.1574468325115]
We take up the idea of Nelson's processes, the aim of which was to deduce Schr"odinger's equation.
We consider deterministic processes which are pseudo-random but which have the same characteristics as Nelson's processes.
arXiv Detail & Related papers (2025-04-29T16:18:51Z) - The composition rule for quantum systems is not the only possible one [0.0]
We argue that the composition postulate deserves to be experimentally scrutinised independently of the other features of quantum theory.
We formulate a family of operational theories that are solely distinguished from standard quantum theory by their system-composition rule.
arXiv Detail & Related papers (2024-11-24T19:31:13Z) - Hamiltonian Engineering of collective XYZ spin models in an optical cavity [0.0]
Quantum simulation using synthetic quantum systems offers unique opportunities to explore open questions in many-body physics.
Here, we are able to realize an all-to-all interaction with arbitrary quadratic Hamiltonian or effectively an infinite range tunable Heisenberg XYZ model.
The versatility of our platform to include more than two relevant momentum states, combined with the flexibility of the simulated Hamiltonians by adding cavity tones opens rich opportunities for quantum simulation and quantum sensing in matter-wave interferometers and other quantum sensors such as optical clocks and magnetometers.
arXiv Detail & Related papers (2024-02-29T18:26:13Z) - Far from equilibrium field theory for strongly coupled light and matter: dynamics of frustrated multi-mode cavity QED [0.0]
We adapt a functional integral technique to obtain non-equilibrium dynamics for interacting light-matter systems.
Our approach is grounded in constructing 'two-particle irreducible' (2PI) effective actions.
We apply our method to complement the analysis of spin glass formation in the context of frustrated multi-mode quantum electrodynamics.
arXiv Detail & Related papers (2023-12-18T19:00:01Z) - A Gell-Mann & Low Theorem Perspective on Quantum Computing: New Paradigm
for Designing Quantum Algorithm [7.680510419135912]
This work offers a new conceptual perspective for variational quantum computing based upon the Gell-Mann & Low theorem.
We employ an innovative mathematical technique to explicitly unfold the normalized S-matrix, thereby enabling the systematic reconstruction of the Dyson series on a quantum computer, order by order.
Our simulations indicate that this method not only successfully recovers the Dyson series but also exhibits robust and stable convergence.
arXiv Detail & Related papers (2023-11-30T06:18:24Z) - Proposal for simulating quantum spin models with the Dzyaloshinskii-Moriya interaction using Rydberg atoms and the construction of asymptotic quantum many-body scar states [0.0]
We have developed a method to simulate quantum spin models with the Dzyaloshinskii-Moriya interaction (DMI) using Rydberg atom quantum simulators.
Our approach involves a two-photon Raman transition and a transformation to the spin-rotating frame.
As a model that can be simulated in our setup but not in solid-state systems, we consider an $S=frac12$ spin chain with a Hamiltonian consisting of Zeeman energy.
arXiv Detail & Related papers (2023-06-08T23:34:01Z) - Capturing dynamical correlations using implicit neural representations [85.66456606776552]
We develop an artificial intelligence framework which combines a neural network trained to mimic simulated data from a model Hamiltonian with automatic differentiation to recover unknown parameters from experimental data.
In doing so, we illustrate the ability to build and train a differentiable model only once, which then can be applied in real-time to multi-dimensional scattering data.
arXiv Detail & Related papers (2023-04-08T07:55:36Z) - Fundamental properties of beam-splitters in classical and quantum optics [0.0]
A beam-splitter has certain (complex-valued) probability amplitudes for sending an incoming photon into one of two possible directions.
We use elementary laws of classical and quantum optics to obtain general relations among the magnitudes and phases of these probability amplitudes.
A simple application of the Feynman method provides a form of justification for the Bose enhancement implicit in the well-known formulas.
arXiv Detail & Related papers (2023-03-23T22:45:32Z) - Consistent Quantum Causes [2.1756081703276]
The Consistent Histories approach provides such a theory.
It justifies the usual laboratory intuition that properly tested apparatus can reveal the earlier microscopic cause.
The use of quantum circuits in discussions of quantum information in a time-irreversible manner can prevent the proper identification of earlier causes.
arXiv Detail & Related papers (2023-03-23T19:09:02Z) - Non-Abelian braiding of graph vertices in a superconducting processor [144.97755321680464]
Indistinguishability of particles is a fundamental principle of quantum mechanics.
braiding of non-Abelian anyons causes rotations in a space of degenerate wavefunctions.
We experimentally verify the fusion rules of the anyons and braid them to realize their statistics.
arXiv Detail & Related papers (2022-10-19T02:28:44Z) - Why we should interpret density matrices as moment matrices: the case of
(in)distinguishable particles and the emergence of classical reality [69.62715388742298]
We introduce a formulation of quantum theory (QT) as a general probabilistic theory but expressed via quasi-expectation operators (QEOs)
We will show that QT for both distinguishable and indistinguishable particles can be formulated in this way.
We will show that finitely exchangeable probabilities for a classical dice are as weird as QT.
arXiv Detail & Related papers (2022-03-08T14:47:39Z) - Entanglement dynamics of thermofield double states in integrable models [0.0]
We study the entanglement dynamics of thermofield double (TFD) states in integrable spin chains and quantum field theories.
We show that, for a natural choice of the Hamiltonian eigenbasis, the TFD evolution may be interpreted as a quantum quench from an initial state.
We conjecture a formula for the entanglement dynamics, which is valid for both discrete and continuous integrable field theories.
arXiv Detail & Related papers (2021-12-03T16:40:36Z) - Generalizing the Quantum Information Model for Dynamic Diffraction [0.0]
We present a quantum information (QI) model of dynamical diffraction based on propagating a particle through a lattice of unitary quantum gates.
We show that the model output is mathematically equivalent to the spherical wave solution of the Takagi-Taupin equations when in the appropriate limit.
Results demonstrate the universality of the QI model and its potential for modeling scenarios that are beyond the scope of the standard theory of DD.
arXiv Detail & Related papers (2021-11-10T20:39:33Z) - An alternative formalism for modeling spin [0.0]
We present an alternative formalism for modeling spin. The ontological elements of this formalism are base-2 sequences of length $n$.
The machinery necessary to model physics is then developed by considering correlations between base-2 sequences.
arXiv Detail & Related papers (2021-10-24T15:49:48Z) - 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) - Spin many-body phases in standard and topological waveguide QED
simulators [68.8204255655161]
We study the many-body behaviour of quantum spin models using waveguide QED setups.
We find novel many-body phases different from the ones obtained in other platforms.
arXiv Detail & Related papers (2021-06-22T09:44:20Z) - Single photon randomness originating from the symmetry of dipole
emission and the unpredictability of spontaneous emission [55.41644538483948]
Quantum random number generation is a key ingredient for quantum cryptography and fundamental quantum optics.
We experimentally demonstrate quantum random number generation based on the spontaneous emission process.
The scheme can be extended to random number generation by coherent single photons with potential applications in solid-state based quantum communication at room temperature.
arXiv Detail & Related papers (2021-02-18T14:07:20Z) - Quantum-optimal-control-inspired ansatz for variational quantum
algorithms [105.54048699217668]
A central component of variational quantum algorithms (VQA) is the state-preparation circuit, also known as ansatz or variational form.
Here, we show that this approach is not always advantageous by introducing ans"atze that incorporate symmetry-breaking unitaries.
This work constitutes a first step towards the development of a more general class of symmetry-breaking ans"atze with applications to physics and chemistry problems.
arXiv Detail & Related papers (2020-08-03T18:00:05Z) - State preparation and measurement in a quantum simulation of the O(3)
sigma model [65.01359242860215]
We show that fixed points of the non-linear O(3) sigma model can be reproduced near a quantum phase transition of a spin model with just two qubits per lattice site.
We apply Trotter methods to obtain results for the complexity of adiabatic ground state preparation in both the weak-coupling and quantum-critical regimes.
We present and analyze a quantum algorithm based on non-unitary randomized simulation methods.
arXiv Detail & Related papers (2020-06-28T23:44:12Z) - Models of zero-range interaction for the bosonic trimer at unitarity [91.3755431537592]
We present the construction of quantum Hamiltonians for a three-body system consisting of identical bosons mutually coupled by a two-body interaction of zero range.
For a large part of the presentation, infinite scattering length will be considered.
arXiv Detail & Related papers (2020-06-03T17:54:43Z) - Theoretical methods for ultrastrong light-matter interactions [91.3755431537592]
This article reviews theoretical methods developed to understand cavity quantum electrodynamics in the ultrastrong-coupling regime.
The article gives a broad overview of the recent progress, ranging from analytical estimate of ground-state properties to proper computation of master equations.
Most of the article is devoted to effective models, relevant for the various experimental platforms in which the ultrastrong coupling has been reached.
arXiv Detail & Related papers (2020-01-23T18:09:10Z)
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.