International Journal of Theoretical Physics

, Volume 54, Issue 4, pp 1269–1274 | Cite as

The Coherence Time of Quantum Rod Qubit

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Abstract

Quantum systems are usually very fragile and external fields will break the quantum coherence for information storing. Here we study the properties of coherence time (CT) of a quantum rod (QR) qubit by the Pekar type variational (PTV) method. Our numerical results show that the CT will increase with increasing QR’s transverse and longitudinal effective confinement lengths (TLECLs), whereas it is a decreasing function of the ellipsoidal aspect ratio (EAR) and polaron radius (PR). Consequently, we can improve the CT by (i) increasing the TLECLs; (ii) decreasing the EAR and PR.

Keywords

Quantum rod Qubit Coherence time Pekar type variational method 
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Notes

Acknowledgments

This project was supported by the National Science Foundation of China under Grant No. 11464034.

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Institute of Condensed Matter PhysicsInner Mongolia University for the NationalitiesTongliaoChina

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