Decoherence of highly mixed macroscopic quantum superpositions

Journal of the Optical Society of America B: Optical Physics

Volumn 25, Issue 6, 2008, Pages 1025-1030

  Jeong, Hyunseok ^a,b   Lee, Jinhyoung ^c   Nha, Hyunchul ^d  

^a UNIVERSITY OF QUEENSLAND   (Australia)

^b Seoul National University   (South Korea)

^c Hanyang University   (South Korea)

^d TEXAS A AND M UNIVERSITY AT QATAR   (Qatar)

Author keywords

[No Author keywords available]

Indexed keywords

PHASE SPACE METHODS;

CENTRAL DISTANCE; COMPONENT STATE; DECOHERENCE RATES; INITIAL STATE; LARGE AMOUNTS; MACROSCOPIC QUANTUM; MACROSCOPIC QUANTUM STATE; NONCLASSICALITY;

QUANTUM THEORY;

EID: 50449088408     PISSN: 07403224     EISSN: None     Source Type: Journal    
DOI: 10.1364/JOSAB.25.001025     Document Type: Article

References (24)

1. E. Schrödinger, "Die gegenwartige Situation in der Quantenmechanik," Naturwiss. 23, 807-812, 823-828, 844-849 (1935).
2. 60 molecules," Nature 401, 680-682 (1999).
3. J. M. Raimond, M. Brune, and S. Haroche, "Manipulating quantum entanglement with atoms and photons in a cavity," Rev. Mod. Phys. 73, 565-582 (2001).
4. A. J. Leggett, "Testing the limits of quantum mechanics: motivation, state of play, prospects," J. Phys.: Condens. Matter 14, R415-R451 (2002).
5. A. J. Leggett, "The quantum measurement problem," Science 307, 871-872 (2005).
6. J. I. Korsbakken, K. B. Whaley, J. Dubois, and J. I. Cirac, "Measurement-based measure of the size of macroscopic quantum superpositions," Phys. Rev. A 75, 042106 (2007).
7. W. H. Zurek, "Decoherence, einselection, and the quantum origins of the classical," Rev. Mod. Phys. 75, 715-775 (2003), and references therein.
8. M. Brune, E. Hagley, J. Dreyer, X. Matre, A. Maali, C. Wunderlich, J. M. Raimond, and S. Haroche, "Observing the progressive decoherence of the 'meter' in a quantum measurement," Phys. Rev. Lett. 77, 4887-4890 (1996).
9. B. Yurke and D. Stoler, "Generating quantum mechanical superpositions of macroscopically distinguishable states via amplitude dispersion," Phys. Rev. Lett. 57, 13-16 (1986).
10. W. Schleich, M. Pernigo, and F. L. Kien, "Nonclassical state from two pseudoclassical states," Phys. Rev. A 44, 2172-2187 (1991).
11. G. W. Gardiner and P. Zoller, Quantum Noise, 3rd ed. (Springer-Verlag, 2004).
12. M. S. Kim and V. Bužek, "Schrodinger-cat states at finite temperature: influence of a finite-temperature heat bath on quantum interferences," Phys. Rev. A 46, 4239-4251 (1992).
13. H. J. Carmichael, "Quantum future," in Proceedings of the Xth Max Born Symposium, Poland, Ph. Blanchard and A. Jadczyk, eds. (Springer, 1999), pp. 15-36.
14. H. Jeong, J. Lee, and M. S. Kim, "Dynamics of nonlocality for a two-mode squeezed state in a thermal environment," Phys. Rev. A 61, 052101 (2000).
15. H. Jeong and T. C. Ralph, "Transfer of nonclassical properties from a microscopic superposition to macroscopic thermal states in the high temperature limit," Phys. Rev. Lett. 97, 100401 (2006).
16. E. Schrödinger, "The constant crossover of micro- to macro-mechanics," Naturwiss. 14, 664-666 (1926).
17. i -α), where the normalization factor is omitted and is arbitrary, while we choose =π for convenience. However, all the conclusions in this paper remain the same regardless of the choice of.
18. A. Ourjoumtsev, H. Jeong, R. Tualle-Brouri, and P. Grangier, "Generation of optical 'Schrodinger cats' from photon number states," Nature 448, 784-786 (2007).
19. E. P. Wigner, "On the quantum correction for thermodynamic equilibrium," Phys. Rev. 40, 749-759 (1932).
20. D. F. Walls and G. J. Milburn, Quantum Optics (Springer-Verlag, 1994).
21. M. Hillery, R. F. O'Connell, M. O. Scully, and E. P. Wigner, "Distribution functions in physics: fundamentals," Phys. Rep. 106, 121-167 (1984).
22. S. J. D. Phoenix, "Wave-packet evolution in the damped oscillator," Phys. Rev. A 41, 5132-5138 (1990).
23. S. M. Barnett and P. M. Radmore, Methods in Theoretical Quantum Optics (Oxford U. Press, 1997).
24. M. Paternostro, H. Jeong, and M. S. Kim, "Entanglement of mixed macroscopic superpositions: an entangling-power study," Phys. Rev. A 73, 012338 (2006).