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Quantum Dynamics in Various Noise Sc...

Yu, Li.

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Quantum Dynamics in Various Noise Scenarios.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Quantum Dynamics in Various Noise Scenarios./
Author:	Yu, Li.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	124 p.
Notes:	Source: Dissertations Abstracts International, Volume: 82-10, Section: B.
Contained By:	Dissertations Abstracts International82-10B.
Subject:	Theoretical physics. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28450333
ISBN:	9798597056760

Quantum Dynamics in Various Noise Scenarios.
Yu, Li.

Quantum Dynamics in Various Noise Scenarios. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 124 p.

Source: Dissertations Abstracts International, Volume: 82-10, Section: B.

Thesis (Ph.D.)--Harvard University, 2020.

This item must not be sold to any third party vendors.

We provide an alternative derivation of a master equation formalism for open quantum systems and apply it to illustrative examples. Using this formalism, we show that generally there can be interference between non-interacting baths on a system's reduced dynamics, confirming results in Phys. Rev. A 89, 042117 (2014). However, we also find that, up to second order, such interference vanishes as long as the baths are initially statistically independent, thereby identifying a satisfiable condition for non-interference.We use a two-dimensional series expansion method to develop a master equation formalism that deals with the effects of both system-environment interaction and classical noise on a system's dynamics in a unified manner. We apply this formalism to the example of a Zeeman-splitted atom in a stochastic B-field interacting with an optical cavity and find that the atom's total decoherence rate is, up to second order, a simple sum of the decoherence rate due to the atom-cavity interaction alone and that due to the stochastic B-field alone.We also develop a formalism for the dynamics of the (marginal) probability density of open classical systems in a similar fashion as the master equation formalism for open quantum systems.

ISBN: 9798597056760Subjects--Topical Terms:

2144760
Theoretical physics.
Subjects--Index Terms:

Quantum dynamics

Quantum Dynamics in Various Noise Scenarios.
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300 $a 124 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-10, Section: B.
500 $a Advisor: Heller, Eric.
502 $a Thesis (Ph.D.)--Harvard University, 2020.
506 $a This item must not be sold to any third party vendors.
520 $a We provide an alternative derivation of a master equation formalism for open quantum systems and apply it to illustrative examples. Using this formalism, we show that generally there can be interference between non-interacting baths on a system's reduced dynamics, confirming results in Phys. Rev. A 89, 042117 (2014). However, we also find that, up to second order, such interference vanishes as long as the baths are initially statistically independent, thereby identifying a satisfiable condition for non-interference.We use a two-dimensional series expansion method to develop a master equation formalism that deals with the effects of both system-environment interaction and classical noise on a system's dynamics in a unified manner. We apply this formalism to the example of a Zeeman-splitted atom in a stochastic B-field interacting with an optical cavity and find that the atom's total decoherence rate is, up to second order, a simple sum of the decoherence rate due to the atom-cavity interaction alone and that due to the stochastic B-field alone.We also develop a formalism for the dynamics of the (marginal) probability density of open classical systems in a similar fashion as the master equation formalism for open quantum systems.
590 $a School code: 0084.
650 4 $a Theoretical physics. $3 2144760
653 $a Quantum dynamics
653 $a Master equation formalism
653 $a System-environment interaction
653 $a Classical noise
690 $a 0753
710 2 $a Harvard University. $b Physics. $3 2094825
773 0 $t Dissertations Abstracts International $g 82-10B.
790 $a 0084
791 $a Ph.D.
792 $a 2020
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28450333