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Volumn 93, Issue 4, 2004, Pages

Quantum dense coding with atomic qubits

Author keywords

[No Author keywords available]

Indexed keywords

DEGREES OF FREEDOM (MECHANICS); FLUORESCENCE; GROUND STATE; LASER APPLICATIONS; LASER BEAMS; MAGNETIC FIELD EFFECTS; MAGNETIC MOMENTS; NUCLEAR MAGNETIC RESONANCE; PHOTONS; POLARIZATION; RAMAN SCATTERING;

EID: 4344584442     PISSN: 00319007     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevLett.93.040505     Document Type: Article
Times cited : (111)

References (33)
  • 4
    • 0346478403 scopus 로고    scopus 로고
    • X. Fang et al., Phys. Rev. A 61, 022307 (2000).
    • (2000) Phys. Rev. A , vol.61 , pp. 022307
    • Fang, X.1
  • 9
    • 4344654171 scopus 로고    scopus 로고
    • J. Mizuno, K. Wakui, A. Furusawa, and M. Sasaki, quant-ph/0402040
    • J. Mizuno, K. Wakui, A. Furusawa, and M. Sasaki, quant-ph/0402040.
  • 16
    • 4344587880 scopus 로고    scopus 로고
    • See, for example, http://qist.lanl.gov/
  • 18
  • 22
    • 4344566480 scopus 로고    scopus 로고
    • private communication
    • In this context, we note that an eavesdropper intercepting the qubit sent from Bob to Alice could not gain any knowledge about the encoded message without access to the second qubit in the entangled pair. This would hold even for imperfect entanglement, as long as the imperfection is unbiased as, for example, a depolarizing error [M. A. Nielsen (private communication)].
    • Nielsen, M.A.1
  • 27
    • 4344592444 scopus 로고    scopus 로고
    • note
    • The laser beam waists (approximately equal to the beam diameters) at the ions were approximately 30 μm, and the beam positions were adjusted to give equal intensity on both ions.
  • 31
    • 4344568295 scopus 로고    scopus 로고
    • note
    • In our previous experiments [25], the separation was achieved with only a 95% success probability and the motion was excited substantially, leading to poor detection efficiency. Aided by a smaller separation electrode in the current apparatus (100 μm wide vs 800 μm wide in Ref. [25]), separation was accomplished with no detected failures and the small heating (about ten quanta) led to more efficient state detection.
  • 32
    • 85088489394 scopus 로고    scopus 로고
    • note
    • |Φ-〉 ≃ 0.90.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.