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- Marcus Huber, Julio I de Vicente
- Physical review letters
- 2013

We explore the structure of multipartite quantum systems which are entangled in multiple degrees of freedom. We find necessary and sufficient conditions for the characterization of tripartite systems and necessary conditions for any number of parties. Furthermore we develop a framework of multilevel witnesses for efficient discrimination and quantification… (More)

- Mario Krenn, Marcus Huber, Robert Fickler, Radek Lapkiewicz, Sven Ramelow, Anton Zeilinger
- Proceedings of the National Academy of Sciences…
- 2014

Entangled quantum systems have properties that have fundamentally overthrown the classical worldview. Increasing the complexity of entangled states by expanding their dimensionality allows the implementation of novel fundamental tests of nature, and moreover also enables genuinely new protocols for quantum information processing. Here we present the… (More)

- Marcus Huber, Florian Mintert, Andreas Gabriel, Beatrix C Hiesmayr
- Physical review letters
- 2010

We derive a general framework to identify genuinely multipartite entangled mixed quantum states in arbitrary-dimensional systems and show in exemplary cases that the constructed criteria are stronger than those previously known. Our criteria are simple functions of the given quantum state and detect genuine multipartite entanglement that had not been… (More)

- Karen V Hovhannisyan, Martí Perarnau-Llobet, Marcus Huber, Antonio Acín
- Physical review letters
- 2013

We consider reversible work extraction from identical quantum systems. From an ensemble of individually passive states, work can be produced only via global unitary (and thus entangling) operations. However, we show here that there always exists a method to extract all possible work without creating any entanglement, at the price of generically requiring… (More)

- Gael Sentís, Christopher Eltschka, Otfried Gühne, Marcus Huber, Jens Siewert
- Physical review letters
- 2016

The Schmidt coefficients capture all entanglement properties of a pure bipartite state and therefore determine its usefulness for quantum information processing. While the quantification of the corresponding properties in mixed states is important both from a theoretical and a practical point of view, it is considerably more difficult, and methods beyond… (More)

- Tobias Moroder, Oleg Gittsovich, Marcus Huber, Otfried Gühne
- Physical review letters
- 2014

Quantum correlations are at the heart of many applications in quantum information science and, at the same time, they form the basis for discussions about genuine quantum effects and their difference to classical physics. On one hand, entanglement theory provides the tools to quantify correlations in information processing and many results have been… (More)

- Nicolas Brunner, Marcus Huber, Noah Linden, Sandu Popescu, Ralph Silva, Paul Skrzypczyk
- Physical review. E, Statistical, nonlinear, and…
- 2014

Small self-contained quantum thermal machines function without external source of work or control but using only incoherent interactions with thermal baths. Here we investigate the role of entanglement in a small self-contained quantum refrigerator. We first show that entanglement is detrimental as far as efficiency is concerned-fridges operating at… (More)

- Anton Plech, Uwe Klemradt, Markus Aspelmeyer, Marcus Huber, Johann Peisl
- Physical review. E, Statistical, nonlinear, and…
- 2002

The liquid-solid interface between a silicon substrate and the binary mixture perfluoromethylcyclohexane (PFMC) and 2-propanol (IP) is examined by x-ray specular reflectivity and diffuse scattering under grazing angles. The wetting films between the PFMC-rich phase and the substrate are characterized with respect to the density profile and lateral… (More)

- Marcus Huber, Ritabrata Sengupta
- Physical review letters
- 2014

We derive a general framework that lifts any set of bipartite to multipartite entanglement witnesses and we show how positive maps can naturally be incorporated into this framework. We show that some previous approaches for multipartite entanglement detection are intimately connected to the witnesses derived from partial transposition and that such criteria… (More)

- Martí Perarnau-Llobet, Karen V Hovhannisyan, Marcus Huber, Paul Skrzypczyk, Jordi Tura, Antonio Acín
- Physical review. E, Statistical, nonlinear, and…
- 2015

Passive states are defined as those states that do not allow for work extraction in a cyclic (unitary) process. Within the set of passive states, thermal states are the most stable ones: they maximize the entropy for a given energy, and similarly they minimize the energy for a given entropy. Here we find the passive states lying in the other extreme, i.e.,… (More)