Entanglement purification of Gaussian continuous variable quantum states

被引：184
|
作者：
Duan, LM [1 ]
Giedke, G
Cirac, JI
Zoller, P
机构：
[1] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria
[2] Univ Sci & Technol China, Lab Quantum Commun & Quantum Computat, Hefei 230026, Peoples R China
来源：
PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 17期
关键词：
D O I：
10.1103/PhysRevLett.84.4002
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We describe an entanglement purification protocol to generate maximally entangled states with high efficiencies from two-mode squeezed states or from mixed Gaussian continuous entangled states. The protocol relies on a local quantum nondemolition measurement of the total excitation number of several continuous variable entangled pairs. We propose an optical scheme to do this kind of measurement using cavity enhanced cross-Kerr interactions.
引用
收藏
页码：4002 / 4005
页数：4
相关论文
共 50 条
  • [21] Continuous variable direct secure quantum communication using Gaussian states
    Srikara, S.
    Thapliyal, Kishore
    Pathak, Anirban
    QUANTUM INFORMATION PROCESSING, 2020, 19 (04)
  • [22] Quantum Entanglement of Two-Mode Continuous Variable States in a Thermal Reservoir
    Isar, Aurelian
    ROMOPTO 2009: NINTH CONFERENCE ON OPTICS: MICRO- TO NANOPHOTONICS II, 2010, 7469
  • [23] Non-Gaussian ancilla states for continuous variable quantum computation via Gaussian maps
    Ghose, Shohini
    Sanders, Barry C.
    JOURNAL OF MODERN OPTICS, 2007, 54 (06) : 855 - 869
  • [24] Continuous variable entanglement purification and its physical implementation
    Duan, LM
    Giedke, G
    Cirac, JI
    Zoller, P
    JOURNAL OF MODERN OPTICS, 2000, 47 (14-15) : 2529 - 2542
  • [25] Entanglement quantification and purification in continuous-variable systems
    Parker, S.
    Bose, S.
    Plenio, M.B.
    Physical Review A - Atomic, Molecular, and Optical Physics, 2000, 61 (03): : 323051 - 323058
  • [26] Continuous-variable entanglement purification with atomic systems
    Rebic, Stojan
    Mancini, Stefano
    Morigi, Giovanna
    Vitali, David
    JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2010, 27 (06) : A198 - A207
  • [27] Entanglement quantification and purification in continuous-variable systems
    Parker, S
    Bose, S
    Plenio, MB
    PHYSICAL REVIEW A, 2000, 61 (03): : 8
  • [28] Experimentally feasible purification of continuous-variable entanglement
    Fiurasek, Jaromir
    Marek, Petr
    Filip, Radim
    Schnabel, Roman
    PHYSICAL REVIEW A, 2007, 75 (05):
  • [29] Continuous variable entanglement in open quantum dynamics
    Isar, Aurelian
    PHYSICA SCRIPTA, 2010, T140
  • [30] Continuous-variable quantum teleportation of entanglement
    Johnson, TJ
    Bartlett, SD
    Sanders, BC
    PHYSICAL REVIEW A, 2002, 66 (04):
12345