Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Schmied, Roman"'
Autor:
Li, Zeyang, Colombo, Simone, Shu, Chi, Velez, Gustavo, Pilatowsky-Cameo, Saúl, Schmied, Roman, Choi, Soonwon, Lukin, Mikhail, Pedrozo-Peñafiel, Edwin, Vuletić, Vladan
Publikováno v:
Science 380, 1381-1384 (2023)
Quantum scrambling describes the spreading of local information into many degrees of freedom in quantum systems. This provides the conceptual connection among diverse phenomena ranging from thermalizing quantum dynamics to models of black holes. Here
Externí odkaz:
http://arxiv.org/abs/2212.13880
Publikováno v:
Phys. Rev. A 95, 052347 (2017)
How to detect quantum correlations in bi-partite scenarios using a split many-body system and collective measurements on each party? We address this question by deriving entanglement witnesses using either only first or first and second order moments
Externí odkaz:
http://arxiv.org/abs/1702.08668
Autor:
Wagner, Sebastian, Schmied, Roman, Fadel, Matteo, Treutlein, Philipp, Sangouard, Nicolas, Bancal, Jean-Daniel
Publikováno v:
Phys. Rev. Lett. 119, 170403 (2017)
A recent experiment reported the first violation of a Bell correlation witness in a many-body system [Science 352, 441 (2016)]. Following discussions in this paper, we address here the question of the statistics required to witness Bell correlated st
Externí odkaz:
http://arxiv.org/abs/1702.03088
We discuss the design and optimisation of two types of junctions between surface-electrode radiofrequency ion-trap arrays that enable the integration of experiments with sympathetically cooled molecular ions on a monolithic chip device. A detailed de
Externí odkaz:
http://arxiv.org/abs/1701.06408
Publikováno v:
Rev. Mod. Phys. 90, 035005 (2018)
Quantum technologies exploit entanglement to revolutionize computing, measurements, and communications. This has stimulated the research in different areas of physics to engineer and manipulate fragile many-particle entangled states. Progress has bee
Externí odkaz:
http://arxiv.org/abs/1609.01609
Autor:
Schmied, Roman, Bancal, Jean-Daniel, Allard, Baptiste, Fadel, Matteo, Scarani, Valerio, Treutlein, Philipp, Sangouard, Nicolas
Publikováno v:
Science vol. 352, issue 6284, p. 441 (2016)
Characterizing many-body systems through the quantum correlations between their constituent particles is a major goal of quantum physics. Although entanglement is routinely observed in many systems, we report here the detection of stronger correlatio
Externí odkaz:
http://arxiv.org/abs/1604.06419
Publikováno v:
Phys. Rev. A 93, 043624 (2016)
We use Rabi spectroscopy to explore the low-energy excitation spectrum of a finite-temperature Bose gas of rubidium atoms across the phase transition to a Bose-Einstein condensate (BEC). To record this spectrum, we coherently drive the atomic populat
Externí odkaz:
http://arxiv.org/abs/1603.04699
Autor:
Mielenz, Manuel, Kalis, Henning, Wittemer, Matthias, Hakelberg, Frederick, Schmied, Roman, Blain, Matthew, Maunz, Peter, Leibfried, Dietrich, Warring, Ulrich, Schaetz, Tobias
A custom-built and precisely controlled quantum system may offer access to a fundamental understanding of another, less accessible system of interest. A universal quantum computer is currently out of reach, but an analog quantum simulator that makes
Externí odkaz:
http://arxiv.org/abs/1512.03559
Publikováno v:
Phys. Rev. A 92, 012102 (2015)
Uncertainty relations (URs) like the Heisenberg-Robertson or the time-energy UR are often considered to be hallmarks of quantum theory. Here, a simple derivation of these URs is presented based on a single classical inequality from estimation theory,
Externí odkaz:
http://arxiv.org/abs/1409.4440