High-visibility multi-photon interference of Hanbury Brown - Twiss type for classical light

Difference-phase (or Hanbury Brown - Twiss type) intensity interference of classical light is considered in higher orders in the intensity. It is shown that, while the visibility of sum-phase (NOON-type) interference for classical sources drops with the order of interference, the visibility of difference-phase interference has opposite behavior. For three-photon and four-photon interference of two coherent sources, the visibility can be as high as 81.8% and 94.4%, respectively. High-visibility three-photon and four-photon interference of space-time and polarization types has been observed in experiment, for both coherent and pseudo-thermal light.Comment: 11 pages, 9 figure

Super-bunched bright squeezed vacuum state

In this paper we experimentally study the statistical properties of a bright squeezed vacuum state containing up to 10^13 photons per mode (10 uJ per pulse), produced via high gain parametric down conversion (PDC). The effects of bunching and superbunching of photons were observed for a single mode PDC radiation by second-order intensity correlation function measurements with analog detectors.Comment: 4 pages, 3 figures, submitted to Optics Letter

Nonlinear interferometer for tailoring the frequency spectrum of bright squeezed vacuum

We propose a method for tailoring the frequency spectrum of bright squeezed vacuum by generating it in a nonlinear interferometer, consisting of two down-converting nonlinear crystals separated by a dispersive medium. Due to a faster dispersive spreading of higher-order Schmidt modes, the spectral width of the radiation at the output is reduced as the length of the dispersive medium is increased. Preliminary results show 30\% spectral narrowing.Comment: 9 pages, 6 figure

Raman-free, noble-gas-filled PCF source for ultrafast, very bright twin-beam squeezed vacuum

We report a novel source of twin beams based on modulational instability in high-pressure argon-filled hollow-core kagom\'e-style photonic-crystal fibre. The source is Raman-free and manifests strong photon-number correlations for femtosecond pulses of squeezed vacuum with a record brightness of ~2500 photons per mode. The ultra-broadband (~50 THz) twin beams are frequency tunable and contain one spatial and less than 5 frequency modes

Measurement of two-mode squeezing with photon number resolving multi-pixel detectors

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). Implementation of the MPPCs allows for the observation of noise reduction in a broad dynamic range of the OPA gain, which is inaccessible with standard single photon avalanche photodetectors.Comment: Accepted for Optics Letter

Клінічний випадок ендоваскулярного лікування хронічної артеріальної недостатності головного мозку у пацієнтів з критичною ішемією нижніх кінцівок

The article describes the case of one-stage stenting of the internal carotid artery and balloon angioplasty of the tibial arteries in a patient with multifocal atherosclerosis.В статье приводится описание случая одномоментного стентирования внутренней сонной артерии и баллонной ангиопластики берцовых артерий у пациента с мультифокальным атеросклерозом.У статті наведено опис випадку одномоментного стентування внутрішньої сонної артерії та балонної ангіопластики гомілкових артерій у пацієнта з мультифокальним атеросклерозом

Вплив L-карнітину на показники ендотеліальної дисфункції і фактори запалення в пацієнтів із гострим інфарктом міокарда без зубця Q

Aim: To evaluate the influence of L-carnitine on inflammatory markers and indicators of endothelial function in patients with acute myocardial infarction without the Q wave.Materials and Methods: 40 patients with verified diagnosis of AMI without Q-wave. All the patients were matched by sex, age, weight and duration of the underlying disease. The patients were randomized into 2 groups. The first group ofpatients were on a standard basic therapy and additionally administered L- carnitine at a dose 5g/day, II- group consisted of patients who did not receive drugs with metabolic action. In dynamics (on the 1st and 10th day of the treatment) the parameters of endothelium vasodilation and markers of inflammation were evaluated.Results: On the background of the basic therapy in both groups an improvement in endothelial function resulting in an increase of brachial artery diameter was observed. However, the L- carnitine vasodilator effect was more pronounced and persistent as compared to group II. In the dynamics, CRP levels and plasma fibrinogen were more pronounced in the Ist group.С целью оценки влияния L-карнитина на маркеры воспаления и показатели эндотелиальной функции у пациентов с острым инфарктом миокарда(ОИМ) без зубца Q обследовано 40 пациентов с соответствующим диагнозом. Выявлен более выраженный вазодилатирующий эффект в группе L-карнитина с параллельным снижением уровня маркеров системного воспаления. З метою оцінки впливу L-карнітину на маркери запалення та показники ендотеліальної функції в пацієнтів із гострим інфарктом міокарда(ГІМ) без зубця Q обстежено 40 пацієнтів з відповідним діагнозом. Виявлений більш виражений вазодилатуючий ефект у групі L-карнітину з паралельним зниженням рівня маркерів системного запалення

Symbiosis of chemotherapy and aggressive cancer surgery in improving the results of treatment for locally advanced cancer of the cervix uteri

By arming gynecologic oncology with current chemotherapy regimens and aggressive cancer surgery elements, we can have larger numbers of cured patients with locally advanced cancer of the cervix uteri, by improving the early and late results of treatment