Measurement of geometric phase for mixed states using single photon interferometry

Physical Review Letters

Volumn 94, Issue 5, 2005, Pages

  Ericsson, Marie ^a   Achilles, Daryl ^a   Barreiro, Julio T ^a   Branning, David ^a,b   Peters, Nicholas A ^a   Kwiat, Paul G ^a  

^a University of Illinois at Urbana Champaign   (United States)

^b ROSE HULMAN INSTITUTE OF TECHNOLOGY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

DYNAMICAL PHASE SHIFT; GEOMETRIC PHASE; MIXED STATES; SINGLE PHOTON INTERFEROMETRY;

BIREFRINGENCE; DATA ACQUISITION; EIGENVALUES AND EIGENFUNCTIONS; HAMILTONIANS; INTERFEROMETRY; MATHEMATICAL MODELS; PHASE SHIFT; PIEZOELECTRIC TRANSDUCERS; POLARIZATION;

PHOTONS;

EID: 18244404817     PISSN: 00319007     EISSN: 10797114     Source Type: Journal    
DOI: 10.1103/PhysRevLett.94.050401     Document Type: Article

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28. The adjustable wave plate must not be wedged, or the path overlap will be ruined when the wave plate is rotated.
29. Because the voltage applied to the PZT creates a nonlinear increase in the path length, we fit our data to a sinusoid with nonlinear dependence on the argument. The PZT nonlinear fit parameters were determined by measuring dynamical phase fringes in our interferometer.
30. To reduce the effect of dynamical phase drift, the reference data is taken both before and after each geometric phase-generating HWP setting. The data for each specific wave plate setting is used to calculate the geometric phase relative to both the initial and final reference data; the reported result is the average of the two calculations.
31. The r = 0.04 initial state was prepared more right-circular polarized than left, opposite of the initial states for the r = 0.38 and r = 0.57 trials. Therefore, for ease of comparison with these curves, the r = 0.04 data curve is displayed flipped about the horizontal.
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