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- A. Baust, E. Hoffmann, +17 authors R. Gross
- 2016

A. Baust,1,2,3 E. Hoffmann,1,2 M. Haeberlein,1,2 M. J. Schwarz,1,2,3 P. Eder,1,2,3 J. Goetz,1,2 F. Wulschner,1,2 E. Xie,1,2 L. Zhong,1,2,3 F. Quijandrı́a,4 D. Zueco,5,6 J.-J. Garcı́a Ripoll,7 L. Garcı́a-Álvarez,8 G. Romero,8,9 E. Solano,8,10 K. G. Fedorov,1,2 E. P. Menzel,1,2 F. Deppe,1,2,3,* A. Marx,1 and R. Gross1,2,3,† 1Walther-Meißner-Institut,… (More)

- K. G. Fedorov, Andrey L. Pankratov, Bernardo Spagnolo
- I. J. Bifurcation and Chaos
- 2008

Josephson junctions are physical systems with nonlinear dynamics, which are interesting to investigate both from experimental and theoretical points of view. This is also in view of numerous applications of superconductive devices based on Josephson junctions, such as RSFQ devices, qubits, SQUIDs, etc.. [Barone & Paternò, 1982; Likharev, 1986]. There are,… (More)

- Kirill G Fedorov, L Zhong, +16 authors R Gross
- Physical review letters
- 2016

Displacement of propagating quantum states of light is a fundamental operation for quantum communication. It enables fundamental studies on macroscopic quantum coherence and plays an important role in quantum teleportation protocols with continuous variables. In our experiments, we have successfully implemented this operation for propagating squeezed… (More)

- Kirill G Fedorov, Andrey L Pankratov
- Physical review letters
- 2009

The computer simulations of fluctuational dynamics of an annular system governed by the sine-Gordon model with a white noise source are performed. It is demonstrated that the mean escape time (MET) of a phase string for an annular structure can be much larger than for a linear one and has a strongly pronounced maximum as a function of system's length. The… (More)

- Kirill G Fedorov, Anastasia V Shcherbakova, Michael J Wolf, Detlef Beckmann, Alexey V Ustinov
- Physical review letters
- 2014

An experiment demonstrating a link between classical single-flux quantum digital logic and a superconducting quantum circuit is reported. We implement coupling between a moving Josephson vortex (fluxon) and a flux qubit by reading out of a state of the flux qubit through a frequency shift of the fluxon oscillations in an annular Josephson junction. The… (More)

- A. Baust, E. Hoffmann, +16 authors R. Gross
- 2015

A. Baust,1,2,3,*,† E. Hoffmann,1,2,† M. Haeberlein,1,2 M. J. Schwarz,1,2,3 P. Eder,1,2,3 J. Goetz,1,2 F. Wulschner,1,2 E. Xie,1,2,3 L. Zhong,1,2,3 F. Quijandrı́a,4 B. Peropadre,5,6 D. Zueco,4,7 J.-J. Garcı́a Ripoll,5 E. Solano,8,9 K. Fedorov,1,2 E. P. Menzel,1,2 F. Deppe,1,2,3 A. Marx,1 and R. Gross1,2,3,‡ 1Walther-Meißner-Institut, Bayerische Akademie der… (More)

- S Butz, A K Feofanov, +7 authors A V Ustinov
- Physical review letters
- 2014

In a coupled system of one classical and one quantum mechanical degree of freedom, the quantum degree of freedom can facilitate the escape of the whole system. Such unusual escape characteristics have been theoretically predicted as the "Münchhausen effect." We implement such a system by shunting one of the two junctions of a dc SQUID with an additional… (More)

- J Goetz, S Pogorzalek, +7 authors R Gross
- Physical review letters
- 2017

In experiments with superconducting quantum circuits, characterizing the photon statistics of propagating microwave fields is a fundamental task. We quantify the n^{2}+n photon number variance of thermal microwave photons emitted from a blackbody radiator for mean photon numbers, 0.05≲n≲1.5. We probe the fields using either correlation measurements or a… (More)

- U Las Heras, R Di Candia, K G Fedorov, F Deppe, M Sanz, E Solano
- Scientific reports
- 2017

In quantum illumination entangled light is employed to enhance the detection accuracy of an object when compared with the best classical protocol. On the other hand, cloaking is a stealth technology based on covering a target with a material deflecting the light around the object to avoid its detection. Here, we propose a quantum illumination protocol… (More)

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