85 citations · 1.5k across the 77 of their papers we have counts for
6 papers · 1 filter
Optimal two-qubit tomography based on local and global measurements: Maximal robustness against errors as described by condition numbers
Adam Miranowicz, Karol Bartkiewicz, Jan Perina +3
We present an error analysis of various tomographic protocols based on the linear inversion for the reconstruction of an unknown two-qubit state. We solve the problem of finding a…
Nonclassical properties of a contradirectional nonlinear optical coupler
Kishore Thapliyal, Anirban Pathak, Biswajit Sen +1
We investigate the nonclassical properties of output fields propagated through a contradirectional asymmetric nonlinear optical coupler consisting of a linear waveguide and a nonli…
Spatial properties of twin-beam correlations at low- to high-intensity transition
Radek Machulka, Ondrej Haderka, Jan Perina +3
It is shown that spatial correlation functions measured for correlated photon pairs at the single-photon level correspond to speckle patterns visible at high intensities. This corr…
Coherence properties of high-gain twin beams generated in pump-depletion regime
Alessia Allevi, Ottavia Jedrkiewicz, Enrico Brambilla +4
Twin-beam coherence properties are analyzed both in the spatial and spectral domains at high-gain regime including pump depletion. The increase of the size of intensity auto- and c…
Higher order nonclassicalities in a codirectional nonlinear optical coupler: Quantum entanglement, squeezing and antibunching
Kishore Thapliyal, Anirban Pathak, Biswajit Sen +1
Higher order nonclassical properties of fields propagating through a codirectional asymmetric nonlinear optical coupler which is prepared by combining a linear wave guide and a non…
Absolute calibration of photon-number-resolving detectors with an analog output using twin beams
Jan Perina, Ondrej Haderka, Alessia Allevi +1
A method for absolute calibration of a photon-number resolving detector producing analog signals as the output is developed using a twin beam. The method gives both analog-to-digit…