New Paper: Physical Review A Disorder-assisted graph coloring on quantum annealers

Disorder-assisted graph coloring on quantum annealers


Andrzej Więckowski, Sebastian Deffner, and Bartłomiej Gardas
Phys. Rev. A 100, 062304 (2019)

We are at the verge of a new era, which will be dominated by noisy intermediate-scale quantum devices. Prototypical examples for these new technologies are present-day quantum annealers. In the present work, we investigate to what extent static disorder generated by an external source of noise does not have to be detrimental, but can actually assist quantum annealers in achieving better performance. In particular, we analyze the graph coloring problem that can be solved on a sparse topology (i.e., chimera graph) via suitable embedding. We show that specifically tailored disorder can enhance the fidelity of the annealing process and thus increase the overall performance of the annealer. ]]> Disorder-assisted graph coloring on quantum annealers Andrzej Więckowski, Sebastian Deffner, and Bartłomiej Gardas Phys. Rev. A 100, 062304 (2019) We are at the verge of a new era, which... https://beta.my.umbc.edu/api/v0/pixel/news/88917/guest@my.umbc.edu/2fc9c0ff3307becf2159a5c1424554a3/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Tue, 03 Dec 2019 13:02:24 -0500 New Viewpoint: Equilibration in Quantum Systems Physics 12, 123 (2019) Check out this new Viewpoint on equilibration in quantum systems. ]]> Check out this new Viewpoint on equilibration in quantum systems. https://beta.my.umbc.edu/api/v0/pixel/news/88441/guest@my.umbc.edu/d31c5c7b0263f053d7f2c4a4c79d40f7/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Wed, 13 Nov 2019 13:14:36 -0500 The book is here! It is finally here! The first textbook for an advanced special topics class in Quantum Thermodynamics:

 

Quantum Thermodynamics: An introduction to the thermodynamics of quantum information


Sebastian Deffner and Steve Campbell

This book introduces the emerging field of quantum thermodynamics, with a focus on its relation to quantum information and its implications for quantum computers and next generation quantum technologies. Aimed at graduate level physics students with a working knowledge of quantum mechanics and statistical physics this text introduces the reader to some more state-of-the-art topics in this exciting and rapidly developing research field.

IOP Concise Physics
]]> It is finally here! The first textbook for an advanced special topics class in Quantum Thermodynamics:   Quantum Thermodynamics: An introduction to the thermodynamics of quantum information... https://beta.my.umbc.edu/api/v0/pixel/news/85237/guest@my.umbc.edu/5f71a88abdf827c6538dcfbff391b563/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Tue, 02 Jul 2019 11:35:39 -0400 New graduate student: Akram Touil Starting Summer 2019 Akram Touil has joined the group as graduate student. His research will focus on the thermodynamics of chaotic quantum systems and quantum information scrambling. Welcome to the group! ]]> Starting Summer 2019 Akram Touil has joined the group as graduate student. His research will focus on the thermodynamics of chaotic quantum systems and quantum information scrambling. Welcome to... https://beta.my.umbc.edu/api/v0/pixel/news/85013/guest@my.umbc.edu/18b184c8f74b83f0f149ebe81a203b2c/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Tue, 18 Jun 2019 01:11:49 -0400 New Paper: Quantum to classical transition in an information

Quantum to classical transition in an information ratchet

Phys. Rev. E 99, 042129 (2019)

Josey Stevens and Sebastian Deffner

Recent years have seen a flurry of research activity in the study of minimal and autonomous information ratchets. However, the existing classical and quantum models are somewhat hard to compare and hence quantifying possible quantum supremacy in information ratchets has been elusive. We propose a step towards filling this void between quantum and classical ratchets by introducing a model with continuous variables: a quantum particle in a box coupled to a stream of qubits. The dynamics is solved exactly and we analyze the quantum to classical transition in terms of a natural timescale parameter for the model. ]]> Quantum to classical transition in an information ratchet Phys. Rev. E 99, 042129 (2019) Josey Stevens and Sebastian Deffner Recent years have seen a flurry of research activity in the... https://beta.my.umbc.edu/api/v0/pixel/news/83909/guest@my.umbc.edu/959303b15baf54496e6ac097cfc5583b/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Fri, 19 Apr 2019 14:27:34 -0400 New group member: Priyo Shankar Pal Starting February 2019 Priyo Shankar Pal will be joining the group as Postdoctoral Research Associate. Priyo holds a doctoral degree from the Homi Bhaba National Institute, Mumbai, India, and he has extensive expertise in Stochastic Thermodynamics of Information. During his appointment at UMBC he will be working towards a comprehensive framework for Information Thermodynamics from time-dependent Quantum Field Theories.

Welcome to the Quantum Thermodynamics Group at UMBC.
]]> Starting February 2019 Priyo Shankar Pal will be joining the group as Postdoctoral Research Associate. Priyo holds a doctoral degree from the Homi Bhaba National Institute, Mumbai, India, and he... https://beta.my.umbc.edu/api/v0/pixel/news/81683/guest@my.umbc.edu/767a332e0c4758818cffc579345798a3/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics https://assets1-beta.my.umbc.edu/system/shared/thumbnails/news/000/081/683/a2c991b87ce18146c1b1ab674afe20e6/xxlarge.jpg?1548764713 https://assets3-beta.my.umbc.edu/system/shared/thumbnails/news/000/081/683/a2c991b87ce18146c1b1ab674afe20e6/xlarge.jpg?1548764713 https://assets4-beta.my.umbc.edu/system/shared/thumbnails/news/000/081/683/a2c991b87ce18146c1b1ab674afe20e6/large.jpg?1548764713 https://assets1-beta.my.umbc.edu/system/shared/thumbnails/news/000/081/683/a2c991b87ce18146c1b1ab674afe20e6/medium.jpg?1548764713 https://assets4-beta.my.umbc.edu/system/shared/thumbnails/news/000/081/683/a2c991b87ce18146c1b1ab674afe20e6/small.jpg?1548764713 https://assets1-beta.my.umbc.edu/system/shared/thumbnails/news/000/081/683/a2c991b87ce18146c1b1ab674afe20e6/xsmall.jpg?1548764713 https://assets2-beta.my.umbc.edu/system/shared/thumbnails/news/000/081/683/a2c991b87ce18146c1b1ab674afe20e6/xxsmall.jpg?1548764713 0 0 true Tue, 29 Jan 2019 07:25:59 -0500 New Paper: Scientific Reports

Quantum fluctuation theorem for error diagnostics in quantum annealers

Bartłomiej Gardas & Sebastian Deffner

Sci. Rep. 8, 17191 (2018)

Near term quantum hardware promises unprecedented computational advantage. Crucial in its development is the characterization and minimization of computational errors. We propose the use of the quantum fluctuation theorem to benchmark the accuracy of quantum annealers. This versatile tool provides simple means to determine whether the quantum dynamics are unital, unitary, and adiabatic, or whether the system is prone to thermal noise. Our proposal is experimentally tested on two generations of the D-Wave machine, which illustrates the sensitivity of the fluctuation theorem to the smallest aberrations from ideal annealing. In addition, for the optimally operating D-Wave machine, our experiment provides the first experimental verification of the integral fluctuation in an interacting, many-body quantum system. ]]> Quantum fluctuation theorem for error diagnostics in quantum annealers Bartłomiej Gardas & Sebastian Deffner Sci. Rep. 8, 17191 (2018) Near term quantum hardware promises unprecedented... https://www.nature.com/articles/s41598-018-35264-z https://beta.my.umbc.edu/api/v0/pixel/news/80577/guest@my.umbc.edu/ed86af563bb1a68f9bf9d244d5726e50/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 1 0 true Thu, 22 Nov 2018 17:37:43 -0500 New Paper: Entropy

Efficiency of Harmonic Quantum Otto Engines at Maximal Efficiency

Sebastian Deffner

Entropy 20, 875 (2018)

Recent experimental breakthroughs produced the first nano heat engines that have the potential to harness quantum resources. An instrumental question is how their performance measures up against the efficiency of classical engines. For single ion engines undergoing quantum Otto cycles it has been found that the efficiency at maximal power is given by the Curzon–Ahlborn efficiency. This is rather remarkable as the Curzon–Alhbron efficiency was originally derived for endoreversible Carnot cycles. Here, we analyze two examples of endoreversible Otto engines within the same conceptual framework as Curzon and Ahlborn’s original treatment. We find that for endoreversible Otto cycles in classical harmonic oscillators the efficiency at maximal power is, indeed, given by the Curzon–Ahlborn efficiency. However, we also find that the efficiency of Otto engines made of quantum harmonic oscillators is significantly larger. ]]> Efficiency of Harmonic Quantum Otto Engines at Maximal Efficiency Sebastian Deffner Entropy 20, 875 (2018) Recent experimental breakthroughs produced the first nano heat engines that... https://www.mdpi.com/1099-4300/20/11/875 https://beta.my.umbc.edu/api/v0/pixel/news/80456/guest@my.umbc.edu/ac768321bcb88db6849ecfb44782d3a1/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 1 0 true Fri, 16 Nov 2018 05:36:39 -0500 Fri, 16 Nov 2018 05:38:09 -0500 New Article: Physik Journal Dämonische Qubits Dämonische Qubits: Experimente zur Thermodynamik der Quantencomputer machen vielversprechende Fortschritte (in German)
Sebastian Deffner
Physik Journal 17 (2018) 24 ]]> Dämonische Qubits: Experimente zur Thermodynamik der Quantencomputer machen vielversprechende Fortschritte (in German) Sebastian Deffner Physik Journal 17 (2018) 24 https://beta.my.umbc.edu/api/v0/pixel/news/79141/guest@my.umbc.edu/8cf8861ba838c4c77c8b5add85d8fd49/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Thu, 04 Oct 2018 07:27:49 -0400 Thu, 04 Oct 2018 07:28:05 -0400 New Paper: Phys. Rev. E Minimal dissipation in processes far from equilibrium Minimal dissipation in processes far from equilibrium
Marcus V. S. Bonança and Sebastian Deffner
Phys. Rev. E 98, 042103 (2018)

A central goal of thermodynamics is to identify optimal processes during which the least amount of energy is dissipated into the environment. Generally, even for simple systems, such as the parametric harmonic oscillator, optimal control strategies are mathematically involved and contain peculiar and counterintuitive features. We show that optimal driving protocols determined by means of linear-response theory exhibit the same step and δ-peak-like structures that were previously found from solving the full optimal control problem. However, our method is significantly less involved, since only a minimum of a quadratic form has to be determined. In addition, our findings suggest that optimal protocols from linear-response theory are applicable far outside their actual range of validity. ]]> Minimal dissipation in processes far from equilibrium Marcus V. S. Bonança and Sebastian Deffner Phys. Rev. E 98, 042103 (2018) A central goal of thermodynamics is to identify optimal... https://journals.aps.org/pre/abstract/10.1103/PhysRevE.98.042103 https://beta.my.umbc.edu/api/v0/pixel/news/79088/guest@my.umbc.edu/465f5165d41c2bfc318774eec53992f3/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Tue, 02 Oct 2018 18:10:57 -0400 Tue, 02 Oct 2018 18:11:20 -0400