Quantum problem of the potential of a ring charged on the symmetry axis
- URL: http://arxiv.org/abs/2304.10378v1
- Date: Mon, 17 Apr 2023 00:27:38 GMT
- Title: Quantum problem of the potential of a ring charged on the symmetry axis
- Authors: Wytler Cordeiro dos Santos, Bruno Carmo Nunes and Ronni G.G. Amorim
- Abstract summary: This problem should be an expanded version of the usual quantum ring and quantum corral.
We calculate numerically the spectrum and wave functions related to charged particle located on the symmetry axis of charged ring.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: In this work we discuss about the problem of an electrically charged particle
placed on the symmetry axis of an electrically charged ring in a quantum
viewpoint. This problem should be an expanded version of the usual quantum ring
and quantum corral. For this purpose, we present a detailed and pedagogical
review about a version of the quantum ring focusing in mathematical aspects. As
a new result, we calculate numerically the spectrum and wave functions related
to charged particle located on the symmetry axis of charged ring and respective
wave functions using two different ways: Numerov and perturbative method.
Related papers
- Connection Between Classical and Quantum Descriptions of Spin Waves Using Quantum Circuits [0.16385815610837165]
A quantum computing circuit approximates a single spin wave quantum on a linear chain of spin 1/2 particles.<n>We show analytically that this product state yields the correct dispersion relation in the limit of an unbounded chain.
arXiv Detail & Related papers (2025-07-30T17:02:41Z) - Meson spectroscopy of exotic symmetries of Ising criticality in Rydberg atom arrays [39.58317527488534]
Coupling two Ising chains in a ladder leads to an even richer $mathcalD(1)_8$ symmetries.<n>Here, we probe these emergent symmetries in a Rydberg atom processing unit, leveraging its geometry to realize both chain and ladder configurations.
arXiv Detail & Related papers (2025-06-26T14:19:30Z) - Solving graph problems using permutation-invariant quantum machine learning [35.99391901074448]
In quantum machine learning, the ansatz can be tuned to correspond to the specific symmetry of the problem.<n>We show how the symmetry can be included in the quantum circuit in a straightforward constructive method.
arXiv Detail & Related papers (2025-05-19T06:44:03Z) - Phase transitions, symmetries, and tunneling in Kerr parametric oscillators [37.69303106863453]
We study the onset of ground-state and excited-state quantum phase transitions in KPOs.
We identify the critical points associated with quantum phase transitions and analyze their influence on the energy spectrum and tunneling dynamics.
Our findings provide insights into the engineering of robust quantum states, quantum dynamics control, and onset of quantum phase transitions with implications for critical quantum sensing.
arXiv Detail & Related papers (2025-04-21T18:00:19Z) - Quantum work statistics across a critical point: full crossover from sudden quench to the adiabatic limit [17.407913371102048]
Adiabatic and sudden-quench limits have been studied in detail, but the quantum work statistics along the crossover connecting these limits has largely been an open question.
Here we obtain exact scaling functions for the work statistics along the full crossover from adiabatic to sudden-quench limits for critical quantum impurity problems.
These predictions can be tested in charge-multichannel Kondo quantum dot devices, where the dissipated work corresponds to the creation of nontrivial excitations.
arXiv Detail & Related papers (2025-02-03T18:36:07Z) - Corner Charge Fluctuation as an Observable for Quantum Geometry and Entanglement in Two-dimensional Insulators [0.5120567378386615]
We show that for generic lattice systems of interacting particles, the corner charge fluctuation is directly related to quantum geometry.
A model of a compact obstructed atomic insulator is introduced to illustrate this effect analytically.
numerical verification for various Chern insulator models further demonstrate the experimental relevance of the corner charge fluctuation in a finite-size quantum simulator.
arXiv Detail & Related papers (2024-06-24T18:00:03Z) - Quantumness and quantum to classical transition in the generalized Rabi
model [17.03191662568079]
We define the quantumness of a Hamiltonian by the free energy difference between its quantum and classical descriptions.
We show that the Jaynes-Cummings and anti Jaynes-Cummings models exhibit greater quantumness than the Rabi model.
arXiv Detail & Related papers (2023-11-12T18:24:36Z) - The Electronic Structure of the Hydrogen Molecule: A Tutorial Exercise
in Classical and Quantum Computation [0.0]
We will discuss calculations on the hydrogen molecule both on classical and quantum computers.
In the case of quantum computing, we will start out from the second-quantized Hamiltonian and qubit mappings.
The significance of quantum error correction will be briefly discussed.
arXiv Detail & Related papers (2023-07-10T00:43:42Z) - Independent-oscillator model and the quantum Langevin equation for an oscillator: A review [19.372542786476803]
A derivation of the quantum Langevin equation is outlined based on the microscopic model of the heat bath.
In the steady state, we analyze the quantum counterpart of energy equipartition theorem.
The free energy, entropy, specific heat, and third law of thermodynamics are discussed for one-dimensional quantum Brownian motion.
arXiv Detail & Related papers (2023-06-05T07:59:35Z) - Enhanced optomechanical interaction in the unbalanced interferometer [40.96261204117952]
Quantum optomechanical systems enable the study of fundamental questions on quantum nature of massive objects.
Here we propose a modification of the Michelson-Sagnac interferometer, which allows to boost the optomechanical coupling strength.
arXiv Detail & Related papers (2023-05-11T14:24:34Z) - Oscillatory states of quantum Kapitza pendulum [4.4884981459499524]
We study quantum mechanics problem described by the Schr"odinger equation with Kapitza pendulum potential.
For the oscillatory states spatially localize around the two stable saddle positions of the potential, we obtain the perturbative eigenvalues and corresponding piecewise wavefunctions.
arXiv Detail & Related papers (2022-08-04T06:34:58Z) - A Potential Based Quantization Procedure of the Damped Oscillator [0.0]
We formulate the quantization of the dissipative oscillator, which aids understanding of the above mentioned.
We arrive at such an irreversible quantum theory by which the quantum losses can be described.
arXiv Detail & Related papers (2022-04-06T15:17:03Z) - Factorization with a logarithmic energy spectrum of a central potential [19.091601102091875]
We propose a method to factor numbers based on two interacting bosonic atoms in a central potential where the single-particle spectrum depends logarithmically on the radial quantum numbers of the zero angular momentum states.
arXiv Detail & Related papers (2022-02-16T14:25:33Z) - Quantum chaos driven by long-range waveguide-mediated interactions [125.99533416395765]
We study theoretically quantum states of a pair of photons interacting with a finite periodic array of two-level atoms in a waveguide.
Our calculation reveals two-polariton eigenstates that have a highly irregular wave-function in real space.
arXiv Detail & Related papers (2020-11-24T07:06:36Z) - The Quantum Wasserstein Distance of Order 1 [16.029406401970167]
We propose a generalization of the Wasserstein distance of order 1 to the quantum states of $n$ qudits.
The proposed distance is invariant with respect to permutations of the qudits and unitary operations acting on one qudit.
We also propose a generalization of the Lipschitz constant to quantum observables.
arXiv Detail & Related papers (2020-09-09T18:00:01Z) - On the evolution of quantum non-equilibrium in expanding systems [0.0]
We study quantum ensembles in which the Born Law is initially violated (quantum non-equilibrium)
We show examples of such ensembles that start close to quantum equilibrium, as measured by the standard coarse-grained H-function, but diverge from it with time.
arXiv Detail & Related papers (2020-06-14T08:25:29Z)
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.