Real-Time Quantum Dynamics of a Single Spin 1/2 Coupled to a Spin Bath

Marta L. Guerra; Hans De Raedt; M.A. Novotny

Real-Time Quantum Dynamics of a Single Spin 1/2 Coupled to a Spin Bath

Marta L. Guerra
, Hans De Raedt
, M.A. Novotny

Zernike Institute for Advanced Materials

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2 Citaten (Scopus)

236 Downloads (Pure)

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We performed real-time dynamics of a spin ½ quantum system that is coupled to a bath of N quantum spin ½ particles. The quantities we study are the time dependence of the magnetization and of the quantum purity, P(t). If the spins that constitute the bath have no interactions with each other, the result is compared to a recent theoretical result. We also present simulations to study the effect of interactions between the bath spins. In particular, we analyze how P(t) approaches its asymptotic value for large t and N.

Originele taal-2	English
Titel	Proceedings of the 24th Workshop on Computer Simulation Studies in Condensed Matter Physics (CSP2011)
Uitgeverij	University of Groningen, The Zernike Institute for Advanced Materials
Pagina's	33-36
Aantal pagina's	4
Volume	15
Status	Published - 2011
Evenement	24th Workshop on Computer Simulation Studies in Condensed Matter Physics (CSP2011) - Duur: 1-jan.-2011 → …

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Conference	24th Workshop on Computer Simulation Studies in Condensed Matter Physics (CSP2011)
Periode	01/01/2011 → …

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title = "Real-Time Quantum Dynamics of a Single Spin 1/2 Coupled to a Spin Bath",

abstract = "We performed real-time dynamics of a spin ½ quantum system that is coupled to a bath of N quantum spin ½ particles. The quantities we study are the time dependence of the magnetization and of the quantum purity, P(t). If the spins that constitute the bath have no interactions with each other, the result is compared to a recent theoretical result. We also present simulations to study the effect of interactions between the bath spins. In particular, we analyze how P(t) approaches its asymptotic value for large t and N.",

keywords = "Decoherence, Quantum Purity, Spin Bath, Quantum Dynamics",

author = "Guerra, \{Marta L.\} and Raedt, \{Hans De\} and M.A. Novotny",

note = "Relation: http://www.rug.nl/zernike/ Rights: University of Groningen, Zernike Institute for Advanced Materials; 24th Workshop on Computer Simulation Studies in Condensed Matter Physics (CSP2011) ; Conference date: 01-01-2011",

year = "2011",

language = "English",

volume = "15",

pages = "33--36",

booktitle = "Proceedings of the 24th Workshop on Computer Simulation Studies in Condensed Matter Physics (CSP2011)",

publisher = "University of Groningen, The Zernike Institute for Advanced Materials",

}

Guerra, ML, Raedt, HD & Novotny, MA 2011, Real-Time Quantum Dynamics of a Single Spin 1/2 Coupled to a Spin Bath. in Proceedings of the 24th Workshop on Computer Simulation Studies in Condensed Matter Physics (CSP2011). vol. 15, University of Groningen, The Zernike Institute for Advanced Materials, blz. 33-36, 24th Workshop on Computer Simulation Studies in Condensed Matter Physics (CSP2011), 01/01/2011.

TY - CHAP

T1 - Real-Time Quantum Dynamics of a Single Spin 1/2 Coupled to a Spin Bath

AU - Guerra, Marta L.

AU - Raedt, Hans De

AU - Novotny, M.A.

N1 - Relation: http://www.rug.nl/zernike/ Rights: University of Groningen, Zernike Institute for Advanced Materials

PY - 2011

Y1 - 2011

N2 - We performed real-time dynamics of a spin ½ quantum system that is coupled to a bath of N quantum spin ½ particles. The quantities we study are the time dependence of the magnetization and of the quantum purity, P(t). If the spins that constitute the bath have no interactions with each other, the result is compared to a recent theoretical result. We also present simulations to study the effect of interactions between the bath spins. In particular, we analyze how P(t) approaches its asymptotic value for large t and N.

AB - We performed real-time dynamics of a spin ½ quantum system that is coupled to a bath of N quantum spin ½ particles. The quantities we study are the time dependence of the magnetization and of the quantum purity, P(t). If the spins that constitute the bath have no interactions with each other, the result is compared to a recent theoretical result. We also present simulations to study the effect of interactions between the bath spins. In particular, we analyze how P(t) approaches its asymptotic value for large t and N.

KW - Decoherence

KW - Quantum Purity

KW - Spin Bath

KW - Quantum Dynamics

M3 - Chapter

VL - 15

SP - 33

EP - 36

BT - Proceedings of the 24th Workshop on Computer Simulation Studies in Condensed Matter Physics (CSP2011)

PB - University of Groningen, The Zernike Institute for Advanced Materials

T2 - 24th Workshop on Computer Simulation Studies in Condensed Matter Physics (CSP2011)

Y2 - 1 January 2011

ER -

Real-Time Quantum Dynamics of a Single Spin 1/2 Coupled to a Spin Bath

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