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

International Journal of Theoretical Physics

Entangled State in Quantization of Magnetic Flux Qubits with Mutual Inductance Coupling

Bao‐Long Liang, Ji‐Suo Wang, Xiang‐Guo Meng, Jie Su

Published Jan 13, 2009• 0 citations
Publisher
DOI
10.1007/s10773-009-9926-z

Related papers

Effect of mutual inductance coupling on superconducting flux qubit decoherence

江燕燕, 徐华兰, 嵇英华

Chinese Optics Letters•Jan 1, 2009•0 citations

Mutual inductance's influence on the decoherence of flux qubit

Zhou Teng-fei, Yinghua Ji

The quantum computation needs to maintain the quantum state coherent and the entanglement, but these two characteristics are very easy to be destructed by the decoherent process,therefore,how to overcome the effect of decoherence is the key to implement quantum computation.The Hamiltonian of the superconducting circuit was derived from circuit graph theory,and multilevel dissipative dynamics was studied by the Bloch-Redfield function.Finally,under two-level approximation,the influence of mutual inductance on the decoherence of the magnetic flux qubit was discovered.And how to change the mutual inductance tO reduce the decoherence time of the magnetic flux quantum bit was discussed.

Chinese Journal of Quantum Electronics•Jan 1, 2008•0 citations

Spectroscopy on Two Coupled Superconducting Flux Qubits

Johannes Majer, F. G. Paauw, A. C. J. ter Haar +2 more

We have performed spectroscopy measurements on two coupled flux qubits. The qubits are coupled inductively, which results in a sigma(z)(1)sigma(z)(2) interaction. By applying microwave radiation, we observe resonances due to transitions from the ground state to the first two excited states. From the position of these resonances as a function of the applied magnetic field, we observe the coupling of the qubits. The coupling strength agrees with calculations of the mutual inductance.

arXiv:cond-mat/0308192•Physical Review Letters•Mar 9, 2005•240 citations

Thermal entanglement of two interacting qubits in a static magnetic field

G. Lagmago Kamta, Andrei Y. Istomin, Anthony F. Starace

The European Physical Journal D•Jun 21, 2007•12 citations

Spectroscopy and coherent manipulation of single and coupled flux qubits

Yulin Wu, Hui Deng, Keqiang Huang +7 more

Measurements of three-junction flux qubits, both single flux qubits and coupled flux qubits, using a coupled direct current superconducting quantum interference device (dc-SQUID) for readout are reported. The measurement procedure is described in detail. We performed spectroscopy measurements and coherent manipulations of the qubit states on a single flux qubit, demonstrating quantum energy levels and Rabi oscillations, with Rabi oscillation decay time T Rabi = 78 ns and energy relaxation time T 1 = 315 ns. We found that the value of T Rabi depends strongly on the mutual inductance between the qubit and the magnetic coil. We also performed spectroscopy measurements on inductively coupled flux qubits.

Chinese Physics B•Sep 1, 2013•3 citations

Quantum Entanglement and Correlations in Superconducting Flux Qubits

Marcela Herrera, John Henry Reina

Journal of Superconductivity and Novel Magnetism•Jun 5, 2012•4 citations
The quantum computation needs to maintain the quantum state coherent and the entanglement, but these two characteristics are very easy to be destructed by the decoherent process,therefore,how to overcome the effect of decoherence is the key to implement quantum computation.The Hamiltonian of the superconducting circuit was derived from circuit graph theory,and multilevel dissipative dynamics was studied by the Bloch-Redfield function.Finally,under two-level approximation,the influence of mutual inductance on the decoherence of the magnetic flux qubit was discovered.And how to change the mutual inductance tO reduce the decoherence time of the magnetic flux quantum bit was discussed.
Measurements of three-junction flux qubits, both single flux qubits and coupled flux qubits, using a coupled direct current superconducting quantum interference device (dc-SQUID) for readout are reported. The measurement procedure is described in detail. We performed spectroscopy measurements and coherent manipulations of the qubit states on a single flux qubit, demonstrating quantum energy levels and Rabi oscillations, with Rabi oscillation decay time T Rabi = 78 ns and energy relaxation time T 1 = 315 ns. We found that the value of T Rabi depends strongly on the mutual inductance between the qubit and the magnetic coil. We also performed spectroscopy measurements on inductively coupled flux qubits.