Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Averchenko, Valentin A."'
Parametric down-conversion in a nonlinear crystal is a widely employed technique for generating quadrature squeezed light with multiple modes, which finds applications in quantum metrology, quantum information and communication. Here we study the gen
Externí odkaz:
http://arxiv.org/abs/2407.18826
Autor:
Averchenko, Valentin A., Frascella, Gaetano, Kalash, Mahmoud, Cavanna, Andrea, Chekhova, Maria V.
We propose a method for finding 2D spatial modes of thermal field through a direct measurement of the field intensity and an offline analysis of its spatial fluctuations. Using this method, in a simple and efficient way we reconstruct the modes of a
Externí odkaz:
http://arxiv.org/abs/2009.01778
Publikováno v:
Phys. Rev. A 101, 013808 (2020)
We study the generation of single-photon pulses with the tailored temporal shape via nonlocal spectral filtering. A shaped photon is heralded from a time-energy entangled photon pair upon spectral filtering and time-resolved detection of its entangle
Externí odkaz:
http://arxiv.org/abs/1910.03848
Autor:
Averchenko, Valentin A., Schunk, Gerhard, Förtsch, Michael, Fischer, Martin, Strekalov, Dmitry V., Leuchs, Gerd, Marquardt, Christoph
Cavity-assisted spontaneous parametric down-conversion (SPDC) and spontaneous four-wave mixing (SFWM) in nonlinear optical materials are practical and versatile methods to generate narrowband time-energy entangled photon pairs. Time-energy entangled
Externí odkaz:
http://arxiv.org/abs/1805.08467
Publikováno v:
Phys. Rev. A 96, 043822 (2017)
We propose a method to produce pure single photons with an arbitrary designed temporal shape in a heralded, lossless and scalable way. As the indispensable resource, the method uses pairs of time-energy entangled photons. To accomplish the shaping, o
Externí odkaz:
http://arxiv.org/abs/1610.03794
Publikováno v:
Phys. Rev. A 96, 053847 (2017)
Complete control over the properties of light up to the level of single photons is an invaluable tool for quantum information science and fundamental studies of light-matter interaction. The crucial prerequisite is the ability to create a spatio-temp
Externí odkaz:
http://arxiv.org/abs/1605.00023
The subtraction of a single photon from a multimode quantum field is analyzed as the conditional evolution of an open quantum system. We develop a theory describing different subtraction schemes in a unified approach and we introduce the concept of s
Externí odkaz:
http://arxiv.org/abs/1510.04217
Autor:
Schunk, Gerhard, Vogl, Ulrich, Sedlmeir, Florian, Strekalov, Dmitry V., Otterpohl, Alexander, Averchenko, Valentin, Schwefel, Harald G. L., Leuchs, Gerd, Marquardt, Christoph
Publikováno v:
Journal of Modern Optics, 1-16 (2016)
Quantum repeaters rely on an interfacing of flying qubits with quantum memories. The most common implementations include a narrowband single photon matched in bandwidth and central frequency to an atomic system. Previously, we demonstrated the compat
Externí odkaz:
http://arxiv.org/abs/1510.01198
Publikováno v:
Phys. Rev. A 89, 063808 (2014)
We consider theoretically how to extract mode dependent single photons from a time/frequency multimode non-classical beam. To achieve this task, we calculate the properties of sum frequency generation with a pulse shaped pump, taking into account bot
Externí odkaz:
http://arxiv.org/abs/1404.0160
We perform the quantum analysis of the light emitted by a synchronously pumped optical parametric oscillator operating in the above threshold regime, i.e. when the peak power of pulsed pumping exceeds the threshold of continuous generation. We show t
Externí odkaz:
http://arxiv.org/abs/1104.1648