Quantum entanglement analysis of an optically excited coupling of two nuclear spins via a mediator: Combining the quantum concurrence and negativity

被引：1
作者：
Fu, Chenghua [1 ,2 ]
Hu, Zhanning [3 ]
机构：
[1] Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Anhui, Peoples R China
[2] Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
[3] Tianjin Polytech Univ, Sch Sci, Tianjin 300387, Peoples R China
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2018年 / 97卷
关键词：
Optically excited entanglement; Two nuclear spins; Concurrence; Negativity; LOWEST TRIPLET-STATE; BELLS-INEQUALITY; EPR; GENERATION; VIOLATION; EVOLUTION; SYSTEM; CHAIN; C-60;
D O I：
10.1016/j.physe.2017.10.008
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this paper, we investigate the characteristics of the nuclear spin entanglement generated by an intermedium with an optically excited triplet. Significantly, the interaction between the two nuclear spins presents to be a direct XY coupling in each of the effective subspace Hamiltonians which are obtained by applying a transformation on the natural Hamiltonian. The quantum concurrence and negativity are discussed to quantitatively describe the quantum entanglement, and a comparison between them can reveal the nature of their relationship. An innovative general equation describing the relationship between the concurrence and negativity is explicitly obtained.
引用
收藏
页码：45 / 51
页数：7
相关论文
共 42 条
  • [1] High-field dynamic nuclear polarization for solid and solution biological NMR
    Barnes, A. B.
    De Paepe, G.
    van der Wel, P. C. A.
    Hu, K. -N.
    Joo, C. -G.
    Bajaj, V. S.
    Mak-Jurkauskas, M. L.
    Sirigiri, J. R.
    Herzfeld, J.
    Temkin, R. J.
    Griffin, R. G.
    [J]. APPLIED MAGNETIC RESONANCE, 2008, 34 (3-4) : 237 - 263
  • [2] Quantifying entanglement of a two-qubit system via measurable and invariant moments of its partially transposed density matrix
    Bartkiewicz, Karol
    Beran, Jiri
    Lemr, Karel
    Norek, Michal
    Miranowicz, Adam
    [J]. PHYSICAL REVIEW A, 2015, 91 (02):
  • [3] Optical quantum computation with perpetually coupled spins
    Benjamin, SC
    Lovett, BW
    Reina, JH
    [J]. PHYSICAL REVIEW A, 2004, 70 (06): : 060305 - 1
  • [4] Time-resolved EPR study of fullerene C60 adducts at 240 GHz
    Bortolus, M
    Prato, M
    van Tol, J
    Maniero, AL
    [J]. CHEMICAL PHYSICS LETTERS, 2004, 398 (1-3) : 228 - 234
  • [5] Entanglement and entangling power of the dynamics in light-harvesting complexes
    Caruso, Filippo
    Chin, Alex W.
    Datta, Animesh
    Huelga, Susana F.
    Plenio, Martin B.
    [J]. PHYSICAL REVIEW A, 2010, 81 (06):
  • [6] Can quantum-mechanical description of physical reality be considered complete?
    Einstein, A
    Podolsky, B
    Rosen, N
    [J]. PHYSICAL REVIEW, 1935, 47 (10): : 0777 - 0780
  • [7] Quantum Teleportation via Completely Anisotropic Heisenberg Chain in Inhomogeneous Magnetic Field
    Fu Cheng-Hua
    Hu Zhan-Ning
    [J]. COMMUNICATIONS IN THEORETICAL PHYSICS, 2013, 59 (04) : 398 - 406
  • [8] Generation of Einstein-Podolsky-Rosen pairs of atoms
    Hagley, E
    Maitre, X
    Nogues, G
    Wunderlich, C
    Brune, M
    Raimond, JM
    Haroche, S
    [J]. PHYSICAL REVIEW LETTERS, 1997, 79 (01) : 1 - 5
  • [9] Two-qubit mixed states more entangled than pure states: Comparison of the relative entropy of entanglement for a given nonlocality
    Horst, Bohdan
    Bartkiewicz, Karol
    Miranowicz, Adam
    [J]. PHYSICAL REVIEW A, 2013, 87 (04):
  • [10] Entanglement of a two-qubit system with anisotropic couplings in nonuniform magnetic fields
    Hu, Z-N
    Youn, S. H.
    Kang, K.
    Kim, C. S.
    [J]. JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 2006, 39 (33): : 10523 - 10535
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