Boness, T.;
Bose, S.;
Monteiro, T.;
(2006)
Entanglement and dynamics of spin chains in periodically pulsed magnetic fields: accelerator modes.
Physical Review Letters
, 96
(18)
p. 187201.
10.1103/PhysRevLett.96.187201.
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Abstract
We study the dynamics of a single excitation in a Heisenberg spin-chain subjected to a sequence of periodic pulses from an external, parabolic, magnetic field. We show that, for experimentally reasonable parameters, a pair of counterpropagating coherent states is ejected from the center of the chain. We find an illuminating correspondence with the quantum time evolution of the well-known paradigm of quantum chaos, the quantum kicked rotor. From this we can analyze the entanglement production and interpret the ejected coherent states as a manifestation of the so-called "accelerator modes" of a classically chaotic system.
| Type: | Article |
|---|---|
| Title: | Entanglement and dynamics of spin chains in periodically pulsed magnetic fields: accelerator modes |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.96.187201 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.96.187201 |
| Language: | English |
| UCL classification: | 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/9845 |
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