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- Title
Spin-orbit hybrid entangled channel for spin state quantum teleportation using genetic algorithms.
- Authors
Domínguez-Serna, Francisco; Rojas, Fernando
- Abstract
We present a physical model of spin quantum teleportation protocol (QTP) in a triple quantum dot array using a genetic algorithm approach. The information to teleport is spin-coded in one electron confined in a single quantum dot (SQD). The remaining double quantum dot (DQD) system has just an electron with spin that includes spin-orbit interaction. Charge and spin of the electron get hybridized with the site occupancy having two intrinsic quantum degrees of freedom. The DQD is prepared in a hybrid spin-orbit entangled (HES) Bell-like state with tunneling and site energies as time-dependent control parameters that are optimized by means of genetic algorithms (GAs). The hybrid entangled resources that we obtained allow spin-charge quantum state teleportation with a fidelity of 0.9972 and are used as a resource channel to establish the QT protocol. The spin state of the electron in the SQD interacts with the DQD spin-orbit entangled channel via a modulated exchange interaction to emulate Alice's joint measurement required for QT with GA parameter control. A charge detection measurement in one of the DQD systems is sufficient to have the spin state teleported up to a unitary transformation. A specific joint measurement and unitary transformation were selected to test the protocol, and we obtain fidelity of 0.99 for the QTP. The quantum circuit models for both the spin-orbit entangled state and the teleportation are determined from the analysis of the stages of the controlled quantum dynamics obtained from the GA approach.
- Subjects
SPIN-orbit interactions; QUANTUM teleportation; GENETIC algorithms; QUANTUM dots; DEGREES of freedom
- Publication
Quantum Information Processing, 2019, Vol 18, Issue 1, p1
- ISSN
1570-0755
- Publication type
Article
- DOI
10.1007/s11128-018-2142-0