Decoherence and dephasing errors caused by D.C. Stark effect in rapid ion transport

Details Decoherence and dephasing errors caused by D.C. Stark effect in rapid ion transport Decoherence and dephasing errors caused by D.C. Stark effect in rapid ion transport

2011-03-25

arxiv.org/abs/1103.5065v3

Physics

Quantum Physics

7 pages, 1 figure. v2: Title is changed in this version to make our argument more focused. Introduction is rewritten. A new se

Scientific paper

10.1103/PhysRevA.83.062330

We investigate the error due to D.C. Stark effect for quantum information processing for trapped ion quantum computers using the scalable architecture proposed in J. Res. Natl. Inst. Stan. 103, 259 (1998) and Nature 417, 709 (2002). As the operation speed increases, dephasing and decoherence due to the D.C. Stark effect becomes prominent as a large electric field is applied for transporting ions rapidly. We estimate the relative significance of the decoherence and dephasing effects and find that the latter is dominant. We find that the minimum possible of dephasing is quadratic in the time of flight, and an inverse cubic in the operational time scale. From these relations, we obtain the operational speed-range at which the shifts caused by D.C. Stark effect, no matter follow which trajectory the ion is transported, are no longer negligible. Without phase correction, the maximum speed a qubit can be transferred across a 100 micron-long trap, without excessive error, in about 10 ns for Calcium ion and 50 ps for Beryllium ion. In practice, the accumulated error is difficult to be tracked and calculated, our work gives an estimation to the range of speed limit imposed by D.C. Stark effect.

Affiliated with

Also associated with

No associations

Rating

Decoherence and dephasing errors caused by D.C. Stark effect in rapid ion transport 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 and dephasing errors caused by D.C. Stark effect in rapid ion transport, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Decoherence and dephasing errors caused by D.C. Stark effect in rapid ion transport will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-571526