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9 papers · 2 filters
Two destructive effects of decoherence on Bell inequality violation
Fedor Levkovich-Maslyuk
We consider a system of two spin-1/2 particles, initially in an entangled Bell state. If one of the particles is interacting with an environment (e.g. a collection of N independent…
Analysis of the possibility of analog detectors calibration by exploiting Stimulated Parametric Down Conversion
Giorgio Brida, Maria Chekhova, Marco Genovese +1
Spontaneous parametric down conversion (SPDC) has been largely exploited as a tool for absolute calibration of photon-counting detectors, i.e detectors registering very small photo…
Measurements and Mathematical Formalism of Quantum Mechanics
D. A. Slavnov
A scheme for constructing quantum mechanics is given that does not have Hilbert space and linear operators as its basic elements. Instead, a version of algebraic approach is consid…
Two-Photon Polarization Interference for Pulsed SPDC in a PPKTP Waveguide
Malte Avenhaus, Maria V. Chekhova, Leonid A. Krivitsky +2
We study the spectral properties of Spontaneous Parametric Down Conversion in a periodically poled waveguided structure of KTP crystal pumped by ultra-short pulses. Our theoretical…
Preparation and characterization of arbitrary states of four-dimensional qudits based on biphotons
So-Young Baek, Stanislav S. Straupe, Alexander P. Shurupov +2
We report interferometric schemes to prepare arbitrary states of four-dimensional qudits (ququarts) based on biphoton states of ultrafast-pumped frequency-nondegenerate spontaneous…
Fractional Heisenberg Equation
Vasily E. Tarasov
Fractional derivative can be defined as a fractional power of derivative. The commutator (i/h)[H, ], which is used in the Heisenberg equation, is a derivation on a set of observabl…