TY - JOUR
T1 - Two-Level System with a Noisy Hamiltonian
AU - Nakazato, Hiromichi
AU - Pascazio, Saverio
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 1999
Y1 - 1999
N2 - 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.
AB - 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.
KW - Decoherence
KW - Stochastic
KW - Two-level system
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U2 - 10.1023/A:1007709831927
DO - 10.1023/A:1007709831927
M3 - Conference article
AN - SCOPUS:0042722423
VL - 12
SP - 843
EP - 849
JO - Journal of Superconductivity and Novel Magnetism
JF - Journal of Superconductivity and Novel Magnetism
SN - 1557-1939
IS - 6
T2 - Proceedings of the 1998 International Workshop on 'Macroscopic Quantum Tunneling and Coherence'
Y2 - 10 June 1998 through 13 June 1998
ER -