Bibliographic Details
| Title: |
Correlation effects in a discrete quantum random walk |
| Authors: |
Stang, J. B., Rezakhani, A. T., Sanders, B. C. |
| Source: |
J. Phys. A: Math. Theor. 42, 175304 (2009) |
| Publication Year: |
2008 |
| Collection: |
Quantum Physics |
| Subject Terms: |
Quantum Physics |
| More Details: |
We introduce history-dependent discrete-time quantum random walk models by adding uncorrelated memory terms and also by modifying Hamiltonian of the walker to include couplings with memory-keeping agents. We next numerically study the correlation effects in these models. We also propose a correlation exponent as a relevant and promising tool for investigation of correlation or memory (hence non-Markovian) effects. Our analysis can easily be applied to more realistic models in which different regimes may emerge because of competition between different underlying physical mechanisms.
Comment: 6 pages, 7 figures |
| Document Type: |
Working Paper |
| DOI: |
10.1088/1751-8113/42/17/175304 |
| Access URL: |
http://arxiv.org/abs/0809.0940 |
| Accession Number: |
edsarx.0809.0940 |
| Database: |
arXiv |
