Amplitude spectroscopy of two coupled qubits

Details Amplitude spectroscopy of two coupled qubits Amplitude spectroscopy of two coupled qubits

2012-01-07

arxiv.org/abs/1201.1901v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 6 figures

Scientific paper

We study the effect of a time-dependent driving field with a large amplitude on a system composed of two coupled qubits (two-level systems). Using the rotating wave approximation (RWA) makes it possible to find simple conditions for resonant excitation of the four-level system. We find that the resonance conditions include the coupling strength between the qubits. Numerical simulations confirm the qualitative conclusions following from the RWA. To reveal the peculiarities of resonant transitions caused by the quasi-level motion and crossing in a periodic driving field, we use Floquet states, which determine the precise intermediate states of the system. Calculating the quasi-energy states of the multi-level system makes it possible to find the transition probabilities and build interference patterns for the transition probabilities. The interference patterns demonstrate the possibility of obtaining various pieces of information about the qubits, since the positions of transition-probability maxima depend on various system parameters, including the coupling strength between the qubits.

Affiliated with

Also associated with

No associations

Rating

Amplitude spectroscopy of two coupled qubits 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 Amplitude spectroscopy of two coupled qubits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplitude spectroscopy of two coupled qubits will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-635574