Spectroscopy on two coupled superconducting flux qubits

Physical Review Letters

Volumn 94, Issue 9, 2005, Pages

  Majer, J B ^a,b   Paauw, F G ^a   Ter Haar, A C J ^a   Harmans, C J P M ^a   Mooij, J E ^a  

^a DELFT UNIVERSITY OF TECHNOLOGY   (Netherlands)

^b Yale University   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

COUPLING ENERGY; DOUBLE WELL POTENTIAL; EXCITED STATES; FIXED COUPLINGS;

ELECTRON ENERGY LEVELS; HAMILTONIANS; INDUCTANCE; MAGNETIC FIELDS; MICROWAVES; RESONANCE; SPECTROSCOPY;

SUPERCONDUCTING MATERIALS;

EID: 18144428746     PISSN: 00319007     EISSN: 10797114     Source Type: Journal    
DOI: 10.1103/PhysRevLett.94.090501     Document Type: Article

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15. The kinetic inductance works equivalent to the geometric inductance. The mutual kinetic inductance is equal to the kinetic self-inductance of the shared line. The kinetic inductance of the other parts of the loop acts as a self-inductance.
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17. Note that the energy levels calculated with the Hamiltonian (3) at these points do not cross. However, the splitting is very small. Calculated with the parameters obtained by the fit, the splitting is only 70 MHz. The width of the spectroscopy peaks (∼300 MHz) makes it impossible to observe that splitting.