Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Graduate texts in physics

Coupling to Electromagnetic Fields

Rainer Dick

Published Jan 1, 2020• 2 citations
Publisher
DOI
10.1007/978-3-030-57870-1_15

Related papers

Coupling to Electromagnetic Fields

Rainer Dick

Graduate texts in physics•Jan 1, 2016•0 citations

Coupling to Electromagnetic Fields

Rainer Dick

Graduate texts in physics•Nov 25, 2011•0 citations

Coupling of Two-Level Atom with Electromagnetic Field

IMPERIAL COLLEGE PRESS eBooks•Sep 1, 2004•0 citations

Scalable superconducting qubit circuits using dressed states

Yu-xi Liu, C. P. Sun, Franco Nori

We study a coupling (decoupling) method between a superconducting qubit and a data bus that uses a controllable time-dependent electromagnetic field (TDEF). As in recent experiments, the data bus can be either an $LC$ circuit or a cavity field. When the qubit and the data bus are initially fabricated, their detuning should be made far larger than their coupling constant, so these can be treated as two independent subsystems. However, if a TDEF is applied to the qubit, then a ``dressed qubit'' (i.e., qubit plus the electromagnetic field) can be formed. By choosing appropriate parameters for the TDEF, the dressed qubit can be coupled to the data bus and, thus, the qubit and the data bus can exchange information with the assistance of the TDEF. This mechanism allows the scalability of the circuit to many qubits. With the help of the TDEF, any two qubits can be selectively coupled to (and decoupled from) a common data bus. Therefore, quantum information can be transferred from one qubit to another.

arXiv:cond-mat/0606178•Physical Review A•Nov 14, 2006•101 citations

Fully quantum-mechanical model of a SQUID ring coupled to an electromagnetic field

M. J. Everitt, P. B. Stiffell, Terrence D. Clark +4 more

A quantum system comprising of a monochromatic electromagnetic field coupled to a superconducting quantum interference device (SQUID) ring with sinusoidal nonlinearity is studied. A magnetostatic flux ${\ensuremath{\Phi}}_{x}$ is also threading the SQUID ring, and is used to control the coupling between the two systems. It is shown that for special values of ${\ensuremath{\Phi}}_{x}$ the system is strongly coupled. The time evolution of the system is studied. It is shown that exchange of energy takes place between the two modes and that the system becomes entangled. A second quasiclassical model that treats the electromagnetic field classically is also studied. A comparison between the fully quantum-mechanical model with the electromagnetic field initially in a coherent state and the quasiclassical model is made.

arXiv:cond-mat/0411057•Physical review. B, Condensed matter•Mar 23, 2001•41 citations

Fluorescence and fluorescence quenching in a two-level system

Titus Sandu

Usually, fluorescence of a two-level system increases with the coupling strength to an electromagnetic field. However, we show numerically that the fluorescence is quenched in the ultra-strong coupling limit of a two-level system interacting with an electromagnetic field. This behavior is attributed to the onset of multi-photon processes which occur for the ultra-strong coupling between the two-level system and the electromagnetic field.

CAS proceedings•Oct 1, 2014•1 citation
We study a coupling (decoupling) method between a superconducting qubit and a data bus that uses a controllable time-dependent electromagnetic field (TDEF). As in recent experiments, the data bus can be either an LCLCLC circuit or a cavity field. When the qubit and the data bus are initially fabricated, their detuning should be made far larger than their coupling constant, so these can be treated as two independent subsystems. However, if a TDEF is applied to the qubit, then a ``dressed qubit'' (i.e., qubit plus the electromagnetic field) can be formed. By choosing appropriate parameters for the TDEF, the dressed qubit can be coupled to the data bus and, thus, the qubit and the data bus can exchange information with the assistance of the TDEF. This mechanism allows the scalability of the circuit to many qubits. With the help of the TDEF, any two qubits can be selectively coupled to (and decoupled from) a common data bus. Therefore, quantum information can be transferred from one qubit to another.
A quantum system comprising of a monochromatic electromagnetic field coupled to a superconducting quantum interference device (SQUID) ring with sinusoidal nonlinearity is studied. A magnetostatic flux ${\ensuremath{\Phi}}_{x}$ is also threading the SQUID ring, and is used to control the coupling between the two systems. It is shown that for special values of ${\ensuremath{\Phi}}_{x}$ the system is strongly coupled. The time evolution of the system is studied. It is shown that exchange of energy takes place between the two modes and that the system becomes entangled. A second quasiclassical model that treats the electromagnetic field classically is also studied. A comparison between the fully quantum-mechanical model with the electromagnetic field initially in a coherent state and the quasiclassical model is made.