Abstract
The proposal of using Macroscopic Quantum Coherence in a SQUID as a test of the validity of Quantum Mechanics (QM) for macroscopic systems (Leggett A., 1980; Leggett A. and Garg A. 1985) is considered. We note that if only Macroscopic Realism (MR) is assumed but the requirement that the flux measurement is non invasive (NIM) is dropped, only the measurement of the charge would discriminate between QM and MR. This discrimination however depends critically on the experimental parameters. There is a threshold above which QM is consistent with MR but the measurement is invasive as in QM.
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References
Cini, M. (1983). ‘Quantum Theory of Measurement without Wave Packet Collapse’, Nuovo Cimento ,73B (27).
Cini, M. and Serva, M. (1990). Where is an object before you look at it?‘ Found. of Phys. Lett. 3,129
Cini M. and Serva M. (1992). ‘Measurement in quantum mechanics and classical statistical mechanics’ , Phys. Lett. A, 167 (319).
Cosmelli, C., Diambrini-Palazzi, G., Di Cosimo, G., Di Domenico, A., Castellano, M.G., Leoni, R., Carelli, P., Cirillo, M., Chiatti, L., Scaramuzzi, F. (1993). ‘Proposal for an Experiment for detecting Macroscopic Quantum Coherence with a System of SQUIDs’.
Leggett, A.J. (1980). ‘Macroscopic Quantum Systems and the Quantum Theory of Measurement’. Suppl. Prog. Theor. Phys. ,69 (80).
Leggett, A.J. (1986). ‘Quantum Mechanics at the Macroscopic Level’, in Directions in Condensed Matter Physics ,edited by Grinstein, G. and Mazenko, G. (World Scientific, Singapore), p. 189.
Leggett, A.J. (1987). ‘Macroscopic Quantum Tunneling and Related Matters’, in Proc.l8th Int. Conf. on Low Temperature Physics, Kyoto, Japan. Jour. Appl. Phys. ,26,1986 Suppl. 26-3.
Leggett, A.J. and Garg, A. (1985). ‘Quantum Mechanics versus Macroscopic Realism: Is the Flux There when Nobody Looks?’, Phys. Rev. Lett. ,54 (857).
Tesche, C.D. (1987). ‘Schrödinger’s Cat: a Realization in Superconducting Devices’, in Proc. 18th Int. Conf. on Low Temperature Physics, Kyoto, Jap Jour Appl. Phys. ,26, Suppl. 26-3.
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© 1995 Springer Science+Business Media Dordrecht
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Chiatti, L., Cini, M., Serva, M. (1995). Macroscopic Quantum Coherence as a Test of Quantum Mechanics. In: Garola, C., Rossi, A. (eds) The Foundations of Quantum Mechanics — Historical Analysis and Open Questions. Fundamental Theories of Physics, vol 71. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0029-8_13
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DOI: https://doi.org/10.1007/978-94-011-0029-8_13
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