Work

Strong Coupling of a Quantum Oscillator to a Flux Qubit at Its Symmetry Point

Year: 2010

Type: article

Abstract: A flux qubit biased at its symmetry point shows a minimum in the energy splitting (the gap), providing protection against flux noise. We have fabricated a qubit of which the gap can be tuned fast and have coupled this qubit strongly to an LC oscillator. We show full spectroscopy of the qubit-oscillator system and generate vacuum Rabi oscillations. When the gap is made equal to the oscillator frequency ν(osc) we find the largest vacuum Rabi splitting of ∼0.1 ν(osc). Here being at resonance coincides with the optimal coherence of the symmetry point.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.105.060503

Authors: A. Fedorov, A. K. Feofanov, P. Macha, P. Forn-Díaz, C. J. P. M. Harmans, J. E. Mooij

Institutions: Delft University of Technology, Karlsruhe Institute of Technology, Leibniz Institute of Photonic Technology

Language: English

Topic: Quantum Information and Cryptography

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2085884730

FWCI: 7.426

Cites: 23

Cited by: 161

Related to: 10