| Issue |
EPL
Volume 89, Number 6, March 2010
|
|
|---|---|---|
| Article Number | 67006 | |
| Number of page(s) | 4 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/89/67006 | |
| Published online | 19 April 2010 | |
Effect of strain on the polarization fluctuation of excitons in single-walled nanotubes
Physics Department, Beijing University of Science and Technology - Beijing 100083, China
Corresponding author: fengpeng@ustb.edu.cn
Received:
12
January
2010
Accepted:
12
March
2010
We study the excitonic polarization in single-walled carbon nanotubes under the strain induced by a laser field. The time evolutions of the excitonic polarization and the polarization fluctuation are calculated under different strains by introducing a bosonization scheme for the low-energy excitation of an interacting electron-hole system. Our calculations show that under certain conditions excitons enter into squeezed states in which the polarization fluctuation is less than the one of the vacuum states. The strain can change not only the amplitude of the excitonic polarization fluctuation, but also the time domain in the squeezed states.
PACS: 73.20.Mf – Collective excitations (including excitons, polarons, plasmons and other charge-density excitations) / 42.50.Lc – Quantum fluctuations, quantum noise, and quantum jumps / 78.20.Bh – Theory, models, and numerical simulation
© EPLA, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.