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13 papers · 2 filters
Absolute calibration of photodetectors: photocurrent multiplication versus photocurrent subtraction
I. N. Agafonov, M. V. Chekhova, T. Sh. Iskhakov +3
We report testing of the new absolute method of photodetectors calibration based on the difference-signal measurement for two-mode squeezed vacuum by comparison with the traditiona…
Accessing photon bunching with photon number resolving multi-pixel detector
Dmitry A. Kalashnikov, Si-Hui Tan, Maria V. Chekhova +1
In quantum optics and its applications, there is an urgent demand for photon-number resolving detectors. Recently, there appeared multi-pixel detectors (MPPC) that are able to dist…
Macroscopic Pure State of Light Free of Polarization Noise
Timur Sh. Iskhakov, Maria V. Chekhova, Georgy O. Rytikov +1
The preparation of completely non-polarized light is seemingly easy: an everyday example is sunlight. The task is much more difficult if light has to be in a pure quantum state, as…
The Locality Problem in Quantum Measurements
D. A. Slavnov
The locality problem of quantum measurements is considered in the framework of the algebraic approach. It is shown that contrary to the currently widespread opinion one can reconci…
On Teleportation in a System of Identical Particles
S. N. Molotkov, S. P. Kulik, S. S. Straupe
The teleportation of an unknown polarization state of one of the photons in a system of identical particles has been considered. It has been shown that spatial degrees of freedom,…
On Preparing Entangled Pairs of Polarization Qubits in the Frequency Non-Degenerate Regime
Stanislav Straupe, Sergey Kulik
The problems associated with practical implementation of the scheme proposed for preparation of arbitrary states of polarization ququarts based on biphotons are discussed. The infl…