Two-Level System with a Noisy Hamiltonian

Hiromichi Nakazato*, Saverio Pascazio

*この研究の対応する著者

研究成果: Conference article査読

10 被引用数 (Scopus)

抄録

We study the dynamical properties of a two-level system in interaction with its environment, whose action on the system is modeled by means of a noise term in the Hamiltonian. We solve the Schrödinger equation, obtain an evolution equation of the Lindblad type for the noise average of the density matrix, and discuss the results in terms of a "decoherence parameter." Finally, we concentrate our attention on the possibility of hindering the transitions between the two levels in two (apparently unrelated) ways: (a) by increasing the strength of the noise; (b) by a series of frequent measurements. There is an interesting relation between these two situations.

本文言語English
ページ(範囲)843-849
ページ数7
ジャーナルJournal of Superconductivity
12
6
DOI
出版ステータスPublished - 1999
イベントProceedings of the 1998 International Workshop on 'Macroscopic Quantum Tunneling and Coherence' - Naples, Italy
継続期間: 1998 6 101998 6 13

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 物理学および天文学(その他)

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