Commutator of Electric Charge and Magnetic Flux
- URL: http://arxiv.org/abs/2003.02225v2
- Date: Sat, 7 Mar 2020 16:30:49 GMT
- Title: Commutator of Electric Charge and Magnetic Flux
- Authors: Mikhail A. Savrov
- Abstract summary: derivation of the commutator of the charge and magnetic flux in superconducting circuit.
Physical interpretation of the commutator is discussed.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Here one can find a derivation of the commutator of the charge and magnetic
flux in a superconducting circuit containing a Josephson junction from the
commutation relation of quantum-field operators of electric field and vector
potential. A commutator of the fluxes of electric and magnetic fields passing
through two interlinked loops in vacuum is also evaluated and physical
interpretation of the commutator is discussed.
Related papers
- Induced electric dipole moment coupling in Dirac equation [0.0]
We introduce a nonminimal coupling into the Dirac equation as a model of describing the interaction of a Dirac neutral particle with an induced electric dipole moment with magnetic and electric fields.<n>We obtain a relativistic geometric quantum phase from the interaction of the induced electric dipole moment with electric and magnetic fields.
arXiv Detail & Related papers (2025-09-24T11:44:16Z) - On the electromagnetic couplings in superconducting qubit circuits [0.0]
The electromagnetic couplings among resonators and transmission lines are discussed.
A single resonator coupled to an N-port microwave network is formulated.
The equation of motion of the resonator and the input-output relations of the network are obtained.
arXiv Detail & Related papers (2024-05-19T02:14:36Z) - Electromagnetic chirality-induced negative refraction with the same amplitude and anti-phase of the two chirality coefficients [5.778174665719044]
The negative refraction can be achieved with the two chirality coefficients having the same amplitude but the opposite phase.
The simultaneously negative electric permittivity and magnetic permeability does not require, either.
arXiv Detail & Related papers (2024-03-27T05:15:28Z) - Nonreciprocal devices based on voltage-tunable junctions [48.7576911714538]
We propose to couple the flux degree of freedom of one mode with the charge degree of freedom of a second mode in a hybrid superconducting-semiconducting architecture.
Nonreciprocity can arise in this architecture in the presence of external static magnetic fields alone.
arXiv Detail & Related papers (2022-09-13T17:49:19Z) - Enhancing the Coherence of Superconducting Quantum Bits with Electric
Fields [62.997667081978825]
We show that qubit coherence can be improved by tuning defects away from the qubit resonance using an applied DC-electric field.
We also discuss how local gate electrodes can be implemented in superconducting quantum processors to enable simultaneous in-situ coherence optimization of individual qubits.
arXiv Detail & Related papers (2022-08-02T16:18:30Z) - A hybrid ferromagnetic transmon qubit: circuit design, feasibility and
detection protocols for magnetic fluctuations [45.82374977939355]
We show that the characteristic hysteretic behavior of the ferromagnetic barrier provides an alternative and intrinsically digital tuning of the qubit frequency by means of magnetic field pulses.
The possibility to use the qubit as a noise detector and its relevance to investigate the subtle interplay of magnetism and superconductivity is envisaged.
arXiv Detail & Related papers (2022-06-01T18:50:26Z) - Singlet-doublet transitions of a quantum dot Josephson junction detected
in a transmon circuit [2.610856432667959]
Microwave spectroscopy of the transmon's transition spectrum allows us to probe the ground state parity of the quantum dot.
Our results can facilitate the realization of semiconductor-based $0-pi$ qubits and Andreev qubits.
arXiv Detail & Related papers (2022-02-25T15:20:55Z) - Molecular Interactions Induced by a Static Electric Field in Quantum
Mechanics and Quantum Electrodynamics [68.98428372162448]
We study the interaction between two neutral atoms or molecules subject to a uniform static electric field.
Our focus is to understand the interplay between leading contributions to field-induced electrostatics/polarization and dispersion interactions.
arXiv Detail & Related papers (2021-03-30T14:45:30Z) - Photon Condensation and Enhanced Magnetism in Cavity QED [68.8204255655161]
A system of magnetic molecules coupled to microwave cavities undergoes the equilibrium superradiant phase transition.
The effect of the coupling is first illustrated by the vacuum-induced ferromagnetic order in a quantum Ising model.
A transmission experiment is shown to resolve the transition, measuring the quantum electrodynamical control of magnetism.
arXiv Detail & Related papers (2020-11-07T11:18:24Z) - Paraxial wave function and Gouy phase for a relativistic electron in a
uniform magnetic field [68.8204255655161]
A connection between quantum mechanics and paraxial equations is established for a Dirac particle in external fields.
The paraxial form of the Landau eigenfunction for a relativistic electron in a uniform magnetic field is determined.
arXiv Detail & Related papers (2020-03-08T13:14:44Z)
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.