Quantum Speed Limit for Perfect State Transfer in One Dimension
| dc.creator | Yung, Man-Hong | |
| dc.date | 2006-03-21 | |
| dc.date | 2006-05-02 | |
| dc.date.accessioned | 2026-07-07T07:08:04Z | |
| dc.date.available | 2026-07-07T07:08:04Z | |
| dc.description | 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. | |
| dc.description | 5 pages, no figure; improved version | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0603179 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0603179 | |
| dc.identifier | Phys. Rev. A 74, 030303(R) (2006) | |
| dc.identifier | doi:10.1103/PhysRevA.74.030303 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/110620 | |
| dc.subject | Quantum Physics | |
| dc.title | Quantum Speed Limit for Perfect State Transfer in One Dimension | |
| dc.type | text |