Extracting work from correlations

By M. Perarnau-Llobet, K. Hovhannisyan, Marcus Huber, Paul Skrzypczyk, Nicolas Brunner, Antonio Acín. 2014

145 citations recorded by the source corpus.

We consider the problem of extracting work from isolated quantum systems composed of $n$ subsystems. In this scenario the work can be naturally divided into two contributions: a local contribution from each subsystem, and a global contribution originating from correlations between subsystems. Here we focus on the latter and consider quantum systems which are locally thermal, thus from which work can only be extracted from correlations. We derive bounds on the extractable work for general quantum states, separable states, and states with fixed entropy. Our results show that while entanglement gives an advantage for small quantum systems, this gain vanishes for a large number of subsystems.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/1a4e2f057a2d1096379e7636cf345aa5e394d07c

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

1. A. Imamoğlu
2. John Goold
3. Kavan Modi
4. Sebastian Deffner
5. Steve Campbell
6. Michael J. Hartmann

In Atomic and Molecular Physics, and Optics

1. A. Imamoğlu
2. John Goold
3. Kavan Modi
4. Michael J. Hartmann

In Statistical and Nonlinear Physics

1. John Goold
2. Kavan Modi
3. Sebastian Deffner
4. Steve Campbell

Citations in the corpus

• Quantacell: powerful charging of quantum batteries (2015, background): “This line of reasoning has been extended to explore thework cost in the creation or erasure ofmore general correlations (Perarnau-Llobet et al 2014, Bruschi et al 2015, Giorgi andCampbell 2015,Huber et al 2015).”
• Squeezed Thermal Reservoirs as a Resource for a Nanomechanical Engine beyond the Carnot Limit (2017, background): “By employing nonequilibrium reservoirs, it is expected that the efficiency of work generation can surpass standard thermodynamic bounds, as has been theoretically suggested for quantum coherent [12], quantum correlated [13,14], quantum-measurement-induced [15–17], and squeezed thermal reservoirs [18”