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17 papers · 2 filters
Orbital angular momentum modes of high-gain parametric down-conversion
Lina Beltran, Gaetano Frascella, Angela M. Perez +6
Light beams with orbital angular momentum (OAM) are convenient carriers of quantum information. They can be also used for imparting rotational motion to particles and provide high…
Time-resolved spectroscopy with entangled photons
Dmitry A. Kalashnikov, Elizaveta V. Melik-Gaykazyan, Alexey A. Kalachev +3
Interaction of light with media often occurs with a femtosecond response time. Its measurement by conventional techniques requires the use of femtosecond lasers and sophisticated t…
Experimental adaptive process tomography
Ivan Pogorelov, Gleb Struchalin, Stanislav Straupe +3
Adaptive measurements were recently shown to significantly improve the performance of quantum state tomography. Utilizing information about the system for the on-line choice of opt…
Analysis of coherent quantum cryptography protocol vulnerability to an active beam-splitting attack
D. A. Kronberg, E. O. Kiktenko, A. K. Fedorov +1
We consider a new type of attack on a coherent quantum key distribution protocol [coherent one-way (COW) protocol]. The main idea of the attack consists in measuring individually t…
Test of a hypothesis of realism in quantum theory using a bayesian approach
N. Nikitin, K. Toms
In this paper we propose a time-independent \textit{equality} and time-dependent \textit{inequality}, suitable for an experimental test of the hypothesis of realism. The derivation…
Scalable, chip-based optically-controlled gates for quantum information processing
I. A. Burenkov, O. V. Tikhonova, S. V. Polyakov
Here we present a simple and robust method to build on-the-fly configurable quantum gates based on a photonic exchange between quantum nodes. The idea is based on a high reflectivi…