Decoherence of floating qubits due to capacitive coupling

Details Decoherence of floating qubits due to capacitive coupling Decoherence of floating qubits due to capacitive coupling

2008-07-28

arxiv.org/abs/0807.4535v2

New J. Phys. 11, 033030 (2009)

Physics

Quantum Physics

V1: 4 pages, 3 figures. V2: 5 pages, 3 figures. Published version

Scientific paper

10.1088/1367-2630/11/3/033030

It has often been assumed that electrically floating qubits, such as flux qubits, are immune to decoherence due to capacitive coupling. We show that capacitive coupling to bias leads can be a dominant source of dissipation, and therefore of decoherence, for such floating qubits. Classical electrostatic arguments are sufficient to get a good estimate of this source of relaxation for standard superconducting qubit designs. We show that relaxation times can be improved by designing floating qubits so they couple symmetrically to the bias leads. Observed coherence times of flux qubits with varying degrees of symmetry qualitatively support our results.

Affiliated with

Also associated with

No associations

Rating

Decoherence of floating qubits due to capacitive coupling does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Decoherence of floating qubits due to capacitive coupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Decoherence of floating qubits due to capacitive coupling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-37784