Costa, AT;
Bose, S;
Omar, Y;
(2006)
Entanglement of two impurities through electron scattering.
PHYS REV LETT
, 96
(23)
, Article 230501. 10.1103/PhysRevLett.96.230501.
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Abstract
We study how two magnetic impurities embedded in a solid can be entangled by an injected electron scattering between them and by subsequent measurement of the electron's state. We start by investigating an ideal case where only the electronic spin interacts successively through the same unitary operation with the spins of the two impurities. We find conditions for the impurity spins to be maximally entangled with a significant success probability. We then consider a more realistic description which includes both the forward and backscattering amplitudes. In this scenario, we obtain the entanglement between the impurities as a function of the interaction strength of the electron-impurity coupling. We find that our scheme allows us to entangle the impurities maximally with a significant probability.
| Type: | Article |
|---|---|
| Title: | Entanglement of two impurities through electron scattering |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.96.230501 |
| Keywords: | QUANTUM COMPUTER, CARBON NANOTUBES, DOT, COMPUTATION, QUBITS, STATE |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/9247 |
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