663 citations · 5.8k across the 130 of their papers we have counts for
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The Schmidt modes of biphoton qutrits: Poincare-sphere representation
M V Chekhova, M V Fedorov
For a general-form polarization biphoton qutrit, physically corresponding to a pair of arbitrarily polarized photons in a single frequency and wavevector mode, we explicitly find p…
Macroscopic Hong-Ou-Mandel interference
Timur Sh. Iskhakov, Kirill Yu. Spasibko, Maria V. Chekhova +1
We report on a Hong-Ou-Mandel (HOM) interference experiment for quantum states with photon numbers per mode as large as 10^6 generated via high-gain parametric down conversion (PDC…
Bell's inequality for Macroscopic Squeezed Vacuum
Maria Chekhova, Georgy Rytikov
A non-dichotomic Bell-type inequality for macroscopic photon numbers in two spatially separated beams is derived from local realistic assumptions. This inequality is shown to be po…
Measurement of two-mode squeezing with photon number resolving multi-pixel detectors
Dmitry A. Kalashnikov, Si-Hui Tan, Timur Sh. Iskhakov +2
The measurement of the two-mode squeezed vacuum generated in an optical parametric amplifier (OPA) was performed with photon number resolving Multi-Pixel Photon Counters (MPPCs). I…
Entanglement Witnesses and Measures for Bright Squeezed Vacuum
Magdalena Stobińska, Falk Töppel, Pavel Sekatski +1
Quantum entanglement is a fascinating phenomenon, especially if it is observed at the macroscopic scale. Importantly, macroscopic quantum correlations can be revealed only by accur…
A Versatile Source of Single Photons for Quantum Information Processing
Michael Förtsch, Josef Fürst, Christoffer Wittmann +6
The quantum state of a single photon stands among the most fundamental and intriguing manifestations of quantum physics. At the same time single photons and pairs of single photons…