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77950841143
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One may find it somewhat strange that it is the two unitary steps which are usually called "Von Neumann measurements."
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One may find it somewhat strange that it is the two unitary steps which are usually called "Von Neumann measurements."
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8
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77950786852
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Detectors being big, what we have in mind here is a detector with a narrow slit in front, scanning together along z, or a high-resolution detector array.
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Detectors being big, what we have in mind here is a detector with a narrow slit in front, scanning together along z, or a high-resolution detector array.
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9
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38949186535
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SCIEAS 0036-8075 10.1126/science.1152697
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O. Hosten and P. Kwiat, Science SCIEAS 0036-8075 10.1126/science.1152697 319, 787 (2008).
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Kwiat, P.2
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P. B. Dixon, D. J. Starling, A. N. Jordan, and J. C. Howell, Phys. Rev. Lett. PRLTAO 0031-9007 10.1103/PhysRevLett.102.173601 102, 173601 (2009).
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77950804172
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It is worth mentioning that signal amplification through postselection is a genuine experimental advantage; to achieve the same enhancement of accuracy by more extensive data acquisition might require an unrealistic level of temporal stability of the measuring apparatus.
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It is worth mentioning that signal amplification through postselection is a genuine experimental advantage; to achieve the same enhancement of accuracy by more extensive data acquisition might require an unrealistic level of temporal stability of the measuring apparatus.
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12
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0000218732
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This is a clear case for "latent coherence," the term having been apparently first used in physics by, FNDPA4 0015-9018 10.1007/BF00731905
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This is a clear case for "latent coherence," the term having been apparently first used in physics by D. M. Greenberger and A. YaSin, Found. Phys. FNDPA4 0015-9018 10.1007/BF00731905 19, 679 (1988).
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Greenberger, D.M.1
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More than a mathematical accident, there is a general algebraic reason behind this result: step Eq. (5) contains two complementary projections in the spin subspace, adding up to unity even if squared.
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More than a mathematical accident, there is a general algebraic reason behind this result: step Eq. (5) contains two complementary projections in the spin subspace, adding up to unity even if squared.
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14
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28844448739
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This has been already noticed by, PLRAAN 1050-2947 10.1103/PhysRevA.72. 052111
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This has been already noticed by Y. Aharonov and A. Botero, Phys. Rev. A PLRAAN 1050-2947 10.1103/PhysRevA.72.052111 72, 052111 (2005), who carry on their analysis in terms of the interesting concept of "quantum averages of weak values."
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Aharonov, Y.1
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This also indicates that measurement of z and postselection in ξ are interchangeable (L. Diósi, private communication). The nontrivial point about it is that the relative phases carried by the spin amplitudes and rendered visible by postselection, being the same for each z, are not lost upon measuring z.
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This also indicates that measurement of z and postselection in ξ are interchangeable (L. Diósi, private communication). The nontrivial point about it is that the relative phases carried by the spin amplitudes and rendered visible by postselection, being the same for each z, are not lost upon measuring z.
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16
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77950824731
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With the factors i in Eq. (14), our definition of Δ coincides with that of Hosten and Kwiat [7].
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With the factors i in Eq. (14), our definition of Δ coincides with that of Hosten and Kwiat [7].
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77950800456
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(private communication).
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L. Vaidman (private communication).
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Alternatively, that phase difference can be interpreted in terms of a geometrical phase; see, NJOPFM 1367-2630 10.1088/1367-2630/11/9/093025
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Alternatively, that phase difference can be interpreted in terms of a geometrical phase; see S. Tamate, H. Kobayashi, T. Nakanishi, K. Sugiyama, and M. Kitano, New J. Phys. NJOPFM 1367-2630 10.1088/1367-2630/11/9/093025 11, 093025 (2009).
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Another related emblematic postselection protocol, the "quantum eraser," first proposed by PLRAAN 1050-2947 10.1103/PhysRevA.25.2208
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Another related emblematic postselection protocol, the "quantum eraser," first proposed by M. O. Scully and K. Drühl, Phys. Rev. A PLRAAN 1050-2947 10.1103/PhysRevA.25.2208 25, 2208 (1982), acts just the opposite way. To adapt the idea to the present case, destructive interference is first made latent by spin labeling and then recovered by projecting spins onto uniform, that is, nonlabeling basis states.
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For a recent review, see, CTPHAF 0010-7514 10.1080/00107510601101934
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The combination of unsharp quantum measurement and sharp postselection is analyzed in detail by in edited by J.-P. Françoise G. L. Naber, and S. T. Tsou Elsevier, Oxford
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The combination of unsharp quantum measurement and sharp postselection is analyzed in detail by L. Diósi, in Encyclopedia of Mathematical Physics, edited by, J.-P. Françoise, G. L. Naber, and, S. T. Tsou, (Elsevier, Oxford, 2006), Vol. 4, p. 276.
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