메뉴 건너뛰기




Volumn 272, Issue 5265, 1996, Pages 1131-1136

A "Schrödinger cat" superposition state of an atom

Author keywords

[No Author keywords available]

Indexed keywords

FELIS CATUS;

EID: 0342860967     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.272.5265.1131     Document Type: Article
Times cited : (1403)

References (57)
  • 4
    • 4243051612 scopus 로고    scopus 로고
    • note
    • Issues involving observation by the cat itself (by virtue of its consciousness) are beyond the scope of this article. For our purposes, the cat can be replaced, for example, by an object placed in a superposition of macroscopically separated positions.
  • 5
    • 4243151817 scopus 로고    scopus 로고
    • note
    • 2>)/√2, or a superposition of two classical-like states that are not correlated with the state of a second system. In the analysis of the state shown in Eq. 2, we in fact create the state corresponding to this alternate definition.
  • 7
    • 6144290104 scopus 로고
    • N. Bohr, Nature 121, 580 (1928); Phys. Rev. 48, 696 (1935).
    • (1928) Nature , vol.121 , pp. 580
    • Bohr, N.1
  • 8
    • 0039075727 scopus 로고
    • N. Bohr, Nature 121, 580 (1928); Phys. Rev. 48, 696 (1935).
    • (1935) Phys. Rev. , vol.48 , pp. 696
  • 9
    • 0009448302 scopus 로고
    • translation in (6)
    • W. Heisenberg, Z. Phys. 43, 172 (1927); translation in (6).
    • (1927) Z. Phys. , vol.43 , pp. 172
    • Heisenberg, W.1
  • 10
  • 11
    • 0000882450 scopus 로고
    • D. F. Walls and G. J. Milburn, Phys. Rev. A 31, 2403 (1985); C. M. Savage and D. F. Walls, ibid. 32, 2316 (1985); M. J. Collett, ibid. 38, 2233 (1988).
    • (1985) Phys. Rev. A , vol.31 , pp. 2403
    • Walls, D.F.1    Milburn, G.J.2
  • 12
    • 0000043002 scopus 로고
    • D. F. Walls and G. J. Milburn, Phys. Rev. A 31, 2403 (1985); C. M. Savage and D. F. Walls, ibid. 32, 2316 (1985); M. J. Collett, ibid. 38, 2233 (1988).
    • (1985) Phys. Rev. A , vol.32 , pp. 2316
    • Savage, C.M.1    Walls, D.F.2
  • 13
    • 0001062328 scopus 로고
    • D. F. Walls and G. J. Milburn, Phys. Rev. A 31, 2403 (1985); C. M. Savage and D. F. Walls, ibid. 32, 2316 (1985); M. J. Collett, ibid. 38, 2233 (1988).
    • (1988) Phys. Rev. A , vol.38 , pp. 2233
    • Collett, M.J.1
  • 14
    • 0029388979 scopus 로고    scopus 로고
    • D. P. DiVincenzo, Science 270, 255 (1995); I. L. Chuang, R. Laflamme; P. W. Shor, W. H. Zurek, ibid., p. 1633.
    • (1995) Science , vol.270 , pp. 255
    • DiVincenzo, D.P.1
  • 19
    • 0001605263 scopus 로고
    • O. Carnal and J. Mlynek, Phys. Rev. Lett. 66, 2689 (1991); D. W. Keith, C. R. Ekstrom, Q. A. Turchette, D. E. Pritchard, ibid., p. 2693; M, Kasevich and S. Chu, ibid. 67, 181 (1991); J. Lawall et al., ibid. 75, 4194 (1995).
    • (1991) Phys. Rev. Lett. , vol.66 , pp. 2689
    • Carnal, O.1    Mlynek, J.2
  • 21
    • 10244220727 scopus 로고
    • O. Carnal and J. Mlynek, Phys. Rev. Lett. 66, 2689 (1991); D. W. Keith, C. R. Ekstrom, Q. A. Turchette, D. E. Pritchard, ibid., p. 2693; M, Kasevich and S. Chu, ibid. 67, 181 (1991); J. Lawall et al., ibid. 75, 4194 (1995).
    • (1991) Phys. Rev. Lett. , vol.67 , pp. 181
    • Kasevich, M.1    Chu, S.2
  • 22
    • 0029635782 scopus 로고
    • O. Carnal and J. Mlynek, Phys. Rev. Lett. 66, 2689 (1991); D. W. Keith, C. R. Ekstrom, Q. A. Turchette, D. E. Pritchard, ibid., p. 2693; M, Kasevich and S. Chu, ibid. 67, 181 (1991); J. Lawall et al., ibid. 75, 4194 (1995).
    • (1995) Phys. Rev. Lett. , vol.75 , pp. 4194
    • Lawall, J.1
  • 23
    • 0001637752 scopus 로고
    • L. D. Noordam, D. I. Duncan, T. F. Gallagher, Phys. Rev. A 45, 4734 (1992); R. R. Jones, C. S. Raman, D. W. Schumacher, P. H. Bucksbaum, Phys. Rev. Lett. 71, 2575 (1993); M. W. Noel and C. R. Stroud Jr., ibid. 75, 1252 (1995).
    • (1992) Phys. Rev. A , vol.45 , pp. 4734
    • Noordam, L.D.1    Duncan, D.I.2    Gallagher, T.F.3
  • 25
    • 0000138435 scopus 로고
    • L. D. Noordam, D. I. Duncan, T. F. Gallagher, Phys. Rev. A 45, 4734 (1992); R. R. Jones, C. S. Raman, D. W. Schumacher, P. H. Bucksbaum, Phys. Rev. Lett. 71, 2575 (1993); M. W. Noel and C. R. Stroud Jr., ibid. 75, 1252 (1995).
    • (1995) Phys. Rev. Lett. , vol.75 , pp. 1252
    • Noel, M.W.1    Stroud Jr., C.R.2
  • 27
    • 0001458651 scopus 로고
    • J. Janszky, A.V. Vinogradov, T. Kobayashi, Z. Kis, Phys. Rev. A 50, 1777 (1994); I. A. Walmsley and M. G. Raymer, ibid. 52, 681 (1995).
    • (1995) Phys. Rev. A , vol.52 , pp. 681
    • Walmsley, I.A.1    Raymer, M.G.2
  • 30
    • 5544280822 scopus 로고
    • B. Yurke and D. Stoler, ibid. 57, 13 (1986); Phys. Rev. A 35, 4846 (1987); ibid. 36, 1955 (1987).
    • (1987) Phys. Rev. A , vol.35 , pp. 4846
  • 31
    • 0000656892 scopus 로고
    • B. Yurke and D. Stoler, ibid. 57, 13 (1986); Phys. Rev. A 35, 4846 (1987); ibid. 36, 1955 (1987).
    • (1987) Phys. Rev. A , vol.36 , pp. 1955
  • 32
    • 0007203290 scopus 로고
    • S. J. D. Phoenix and P. L. Knight, Ann. Phys. 186, 381 (1988); J. Gea-Banacloche, Phys. Rev. Lett. 65, 3385 (1990); V. Bužek, H. Moya-Cessa, P. L. Knight, S. J. D. Phoenix, Phys. Rev. A 45, 8190 (1992).
    • (1988) Ann. Phys. , vol.186 , pp. 381
    • Phoenix, S.J.D.1    Knight, P.L.2
  • 33
    • 0000037308 scopus 로고
    • S. J. D. Phoenix and P. L. Knight, Ann. Phys. 186, 381 (1988); J. Gea-Banacloche, Phys. Rev. Lett. 65, 3385 (1990); V. Bužek, H. Moya-Cessa, P. L. Knight, S. J. D. Phoenix, Phys. Rev. A 45, 8190 (1992).
    • (1990) Phys. Rev. Lett. , vol.65 , pp. 3385
    • Gea-Banacloche, J.1
  • 38
    • 0008039151 scopus 로고
    • P. Berman, Ed. Academic Press, New York
    • M. Brune, S. Haroche, J. M. Raimond, L. Davidovich, N. Zagury, Phys. Rev. A 45, 5193 (1992); S. Haroche and J. M. Raimond, in Cavity Quantum Electrodynamics, P. Berman, Ed. (Academic Press, New York, 1994), pp. 123-170.
    • (1994) Cavity Quantum Electrodynamics , pp. 123-170
    • Haroche, S.1    Raimond, J.M.2
  • 46
    • 4243147342 scopus 로고
    • E. Arimondo, W. D. Phillips, F. Strumia, Eds. North-Holland, Amsterdam
    • D. J. Wineland et al., in Laser Manipulation of Atoms and Ions, E. Arimondo, W. D. Phillips, F. Strumia, Eds. (North-Holland, Amsterdam, 1992), pp. 562-563.
    • (1992) Laser Manipulation of Atoms and Ions , pp. 562-563
    • Wineland, D.J.1
  • 47
    • 25044456610 scopus 로고    scopus 로고
    • R. J. Glauber, Phys. Rev. 131, 2766 (1963); ibid., p. 2529.
    • (1963) Phys. Rev. , vol.131 , pp. 2766
    • Glauber, R.J.1
  • 48
    • 25044456610 scopus 로고    scopus 로고
    • R. J. Glauber, Phys. Rev. 131, 2766 (1963); ibid., p. 2529.
    • Phys. Rev. , pp. 2529
  • 49
    • 4243160960 scopus 로고    scopus 로고
    • note
    • 1ωι.
  • 50
    • 4243183755 scopus 로고    scopus 로고
    • note
    • 3/2 excited state are small (detuning ≈ -210 GHz) and can be neglected here.
  • 52
    • 32644451804 scopus 로고
    • dτ, we expect α(dτ) to saturate because of nonlinear correction factors that limit the amplitude of the coherent state and introduce amplitude squeezing [see(31) and W. Vogel and R. L. de Matos Filho, Phys. Rev. A 52, 4214 (1995)]. For the experimental Lamb-Dicke parameter of ∼0.2. these corrections are not significant for α ≤ 5.
    • (1995) Phys. Rev. A , vol.52 , pp. 4214
    • Vogel, W.1    De Matos Filho, R.L.2
  • 55
    • 5844266443 scopus 로고
    • D. T. Smithey, M. Beck, M. G. Raymer, A. Faridani, Phys. Rev. Lett. 70, 1244 (1993); S. Wallentowitz and W. Vogel, ibid. 75, 2932 (1995); J. I. Cirac and P. Zoller, in preparation.
    • (1995) Phys. Rev. Lett. , vol.75 , pp. 2932
    • Wallentowitz, S.1    Vogel, W.2
  • 56
    • 0027560182 scopus 로고    scopus 로고
    • in preparation
    • D. T. Smithey, M. Beck, M. G. Raymer, A. Faridani, Phys. Rev. Lett. 70, 1244 (1993); S. Wallentowitz and W. Vogel, ibid. 75, 2932 (1995); J. I. Cirac and P. Zoller, in preparation.
    • Cirac, J.I.1    Zoller, P.2
  • 57
    • 4243154073 scopus 로고    scopus 로고
    • note
    • We acknowledge key assistance from W. M. Itano, D. Leibfried, J. C. Bergguist, and J. Erickson and useful discussions with J. I. Cirac, P. Zoller, and D. Walls. We thank M. Young, S. Mechels, and D. Lee for critical comments on the manuscript. This work is supported by the U.S. Office of Naval Research and the U.S. Army Research Office.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.