Quantum Speed Limit for Perfect State Transfer in One Dimension

Details Quantum Speed Limit for Perfect State Transfer in One Dimension Quantum Speed Limit for Perfect State Transfer in One Dimension

2006-03-21

arxiv.org/abs/quant-ph/0603179v2

Phys. Rev. A 74, 030303(R) (2006)

Physics

Quantum Physics

5 pages, no figure; improved version

Scientific paper

10.1103/PhysRevA.74.030303

The basic idea of spin chain engineering for perfect quantum state transfer (QST) is to find a set of coupling constants in the Hamiltonian, such that a particular state initially encoded on one site will evolve freely to the opposite site without any dynamical controls. The minimal possible evolution time represents a speed limit for QST. We prove that the optimal solution is the one simulating the precession of a spin in a static magnetic field. We also argue that, at least for solid-state systems where interactions are local, it is more realistic to characterize the computation power by the couplings than the initial energy.

Affiliated with

Also associated with

No associations

Rating

Quantum Speed Limit for Perfect State Transfer in One Dimension 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 Quantum Speed Limit for Perfect State Transfer in One Dimension, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Speed Limit for Perfect State Transfer in One Dimension will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-302846