Non-Markovian decoherence of a two-level system in a Lorentzian bosonic reservoir and a stochastic environment with finite correlation time
In this paper we investigate non-Markovian evolution of a two-level system (qubit) in a bosonic bath under influence of an external classical fluctuating environment. The interaction with the bath has the Lorentzian spectral density, and the fluctuating environment (stochastic field) is represented...
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| creator | Mikhailov, V. A Troshkin, N. V |
| description | In this paper we investigate non-Markovian evolution of a two-level system
(qubit) in a bosonic bath under influence of an external classical fluctuating
environment. The interaction with the bath has the Lorentzian spectral density,
and the fluctuating environment (stochastic field) is represented by a set of
Ornstein-Uhlenbeck processes. Each of the subenvironments of the composite
environment is able to induce non-Markovian dynamics of the two-level system.
By means of the numerically exact method of hierarchical equations of motion,
we study dependence of the steady states of the two-level system, the reduced
density matrix evolution and the equilibrium emission spectrums on frequency
cutoffs and coupling strengths of the subenvironments. Additionally we
investigate the impact of the rotation-wave approximation (RWA) used for the
interaction with the bath on accuracy of the results. |
| doi_str_mv | 10.48550/arxiv.2006.14055 |
| format | Article |
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(qubit) in a bosonic bath under influence of an external classical fluctuating
environment. The interaction with the bath has the Lorentzian spectral density,
and the fluctuating environment (stochastic field) is represented by a set of
Ornstein-Uhlenbeck processes. Each of the subenvironments of the composite
environment is able to induce non-Markovian dynamics of the two-level system.
By means of the numerically exact method of hierarchical equations of motion,
we study dependence of the steady states of the two-level system, the reduced
density matrix evolution and the equilibrium emission spectrums on frequency
cutoffs and coupling strengths of the subenvironments. Additionally we
investigate the impact of the rotation-wave approximation (RWA) used for the
interaction with the bath on accuracy of the results.</description><identifier>DOI: 10.48550/arxiv.2006.14055</identifier><language>eng</language><subject>Physics - Quantum Physics</subject><creationdate>2020-06</creationdate><rights>http://arxiv.org/licenses/nonexclusive-distrib/1.0</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,780,885</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/2006.14055$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.2006.14055$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Mikhailov, V. A</creatorcontrib><creatorcontrib>Troshkin, N. V</creatorcontrib><title>Non-Markovian decoherence of a two-level system in a Lorentzian bosonic reservoir and a stochastic environment with finite correlation time</title><description>In this paper we investigate non-Markovian evolution of a two-level system
(qubit) in a bosonic bath under influence of an external classical fluctuating
environment. The interaction with the bath has the Lorentzian spectral density,
and the fluctuating environment (stochastic field) is represented by a set of
Ornstein-Uhlenbeck processes. Each of the subenvironments of the composite
environment is able to induce non-Markovian dynamics of the two-level system.
By means of the numerically exact method of hierarchical equations of motion,
we study dependence of the steady states of the two-level system, the reduced
density matrix evolution and the equilibrium emission spectrums on frequency
cutoffs and coupling strengths of the subenvironments. Additionally we
investigate the impact of the rotation-wave approximation (RWA) used for the
interaction with the bath on accuracy of the results.</description><subject>Physics - Quantum Physics</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNotkM1OwzAQhHPhgAoPwAm_QELsxI57RBV_UoBL75HtrBWLxItsK6W8Ai-NWzitNDsz0nxFcUPrqpWc13cqfLm1YnUtKtrWnF8WP2_oy1cVPnB1ypMRDE4QwBsgaIki6YDlDCvMJB5jgoU4n9UesyV9nxIaI3pnSIAIYUUXiPJjtsSEZlIx5Rf41QX0S46Qg0sTsc67BMRgCDCr5NCT5Ba4Ki6smiNc_99NsX982O-ey_796WV335dKdLwEZRmXFEBzSoUEwVSjNdtqQVsqLGVaSmmB8W2nWd5jmoaNdTdyQcGAbJtNcftXe6YxfAa3qHAcTlSGM5XmF6VSYJk</recordid><startdate>20200624</startdate><enddate>20200624</enddate><creator>Mikhailov, V. A</creator><creator>Troshkin, N. V</creator><scope>GOX</scope></search><sort><creationdate>20200624</creationdate><title>Non-Markovian decoherence of a two-level system in a Lorentzian bosonic reservoir and a stochastic environment with finite correlation time</title><author>Mikhailov, V. A ; Troshkin, N. V</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a675-eaf2581eeb51168e62a3bb29b61416f12b888fe2597b2decc332d07d561ece843</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Physics - Quantum Physics</topic><toplevel>online_resources</toplevel><creatorcontrib>Mikhailov, V. A</creatorcontrib><creatorcontrib>Troshkin, N. V</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Mikhailov, V. A</au><au>Troshkin, N. V</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Non-Markovian decoherence of a two-level system in a Lorentzian bosonic reservoir and a stochastic environment with finite correlation time</atitle><date>2020-06-24</date><risdate>2020</risdate><abstract>In this paper we investigate non-Markovian evolution of a two-level system
(qubit) in a bosonic bath under influence of an external classical fluctuating
environment. The interaction with the bath has the Lorentzian spectral density,
and the fluctuating environment (stochastic field) is represented by a set of
Ornstein-Uhlenbeck processes. Each of the subenvironments of the composite
environment is able to induce non-Markovian dynamics of the two-level system.
By means of the numerically exact method of hierarchical equations of motion,
we study dependence of the steady states of the two-level system, the reduced
density matrix evolution and the equilibrium emission spectrums on frequency
cutoffs and coupling strengths of the subenvironments. Additionally we
investigate the impact of the rotation-wave approximation (RWA) used for the
interaction with the bath on accuracy of the results.</abstract><doi>10.48550/arxiv.2006.14055</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Physics - Quantum Physics |
| title | Non-Markovian decoherence of a two-level system in a Lorentzian bosonic reservoir and a stochastic environment with finite correlation time |
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