Quick search Find article
Quick search
Find article

Negativity as entanglement degree of the Jaynes–Cummings model

S J Akhtarshenas and M Farsi

Show affiliations


In this paper, by using the notion of negativity, we study the degree of entanglement of a two-level atom interacting with a quantized radiation field, described by the Jaynes–Cummings model (JCM). We suppose that initially the field is in a pure state and the atom is in a general mixed state. In this case the negativity fully captures the entanglement of the JCM. We investigate the case that the initial state of the field is a coherent state. The influences of the detuning on the degree of entanglement are also examined.


PACS

42.50.Dv Quantum state engineering and measurements

Subjects

Optics, quantum optics and lasers

Dates

Issue 5 (May 2007)

Received 14 November 2006, accepted for publication 17 January 2007

Published 8 March 2007



  1. Negativity as entanglement degree of the Jaynes–Cummings model

    S J Akhtarshenas and M Farsi 2007 Phys. Scr. 75 608

  2. Shear-thinning liquid films: macroscopic and asymptotic behaviour by quasi-self-similar solutions

    L Ansini and L Giacomelli 2002 Nonlinearity 15 2147

  3. Magnetic properties of the antiferromagnetic double perovskite Ba2PrRuO6

    Yuki Izumiyama et al 2001 J. Phys.: Condens. Matter 13 1303

  4. Coherent manipulation of biexcitonic transitions and other two-pair correlations

    V M Axt 2004 Semicond. Sci. Technol. 19 S215

  5. Testing permanent magnets

    M C Marsh 1940 J. Sci. Instrum. 17 162

  6. Results from the carbon-land model intercomparison project (C-LAMP) and availability of the data on the earth system grid (ESG)

    F M Hoffman et al 2007 J. Phys.: Conf. Ser. 78 012026

  7. Spectral broadening of lower hybrid waves produced by parametric instability in current drive experiments of tokamak plasmas

    R. Cesario et al 2006 Nucl. Fusion 46 462

  8. Pion condensation in a two-flavour NJL model: the role of charge neutrality

    J O Andersen and L T Kyllingstad 2010 J. Phys. G: Nucl. Part. Phys. 37 015003

  9. Molecular Dynamics Simulation of the Structure I Empty Gas Hydrate

    Cheng Wei and Zhou Hong-Yu 2002 Chinese Phys. Lett. 19 609

  10. New value for the electron's mass—theoretical foundations

    Thomas Beier et al 2003 J. Phys. B: At. Mol. Opt. Phys. 36 1019

Related review articles

What's this?
View review articles related to this research to gain an insight into the key trends in this subject area. Related review articles are selected based on PACS/MSC codes, and are no more than three years old.

  1. Spin-to-orbital conversion of the angular momentum of light and its classical and quantum applications
  2. Solitons in nonlinear optics
  3. Single-photon generation and detection
More

View by subject




Export








Please login to access our web services, or create an account if you don't yet have one.

You must have cookies enabled in your web browser to be able to login.

Username
Password

Forgotten your password? Get a new one here.