Effect of Inter-System Coupling on Heat Transport in a Microscopic Collision Model

Tian, Feng; Zou, Jian; Li, Lei; Li, Hai; Shao, Bin

doi:10.3390/e23040471

Cited by 4 publications

(3 citation statements)

References 76 publications

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“…While the approximation of considering that the system interacts with a reduced portion of the bath at a time instead of all the normal modes at once, seems rather drastic, applications have been found in a wide range of systems. While referring to the relevant reviews [334,335] for a detailed list of applications, significant examples are e.g., in quantum thermalisation [333,337], quantum transport [338,339] or in state preparation [340] among others.…”

Section: Collisional Modelsmentioning

confidence: 99%

Atomic Quantum Technologies for Quantum Matter and Fundamental Physics Applications

Yago Malo,

Lepori,

Gentini

et al. 2024

Technologies

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Physics is living an era of unprecedented cross-fertilization among the different areas of science. In this perspective review, we discuss the manifold impact that state-of-the-art cold and ultracold-atomic platforms can have in fundamental and applied science through the development of platforms for quantum simulation, computation, metrology and sensing. We illustrate how the engineering of table-top experiments with atom technologies is engendering applications to understand problems in condensed matter and fundamental physics, cosmology and astrophysics, unveil foundational aspects of quantum mechanics, and advance quantum chemistry and the emerging field of quantum biology. In this journey, we take the perspective of two main approaches, i.e., creating quantum analogues and building quantum simulators, highlighting that independently of the ultimate goal of a universal quantum computer to be met, the remarkable transformative effects of these achievements remain unchanged. We wish to convey three main messages. First, this atom-based quantum technology enterprise is signing a new era in the way quantum technologies are used for fundamental science, even beyond the advancement of knowledge, which is characterised by truly cross-disciplinary research, extended interplay between theoretical and experimental thinking, and intersectoral approach. Second, quantum many-body physics is unavoidably taking center stage in frontier’s science. Third, quantum science and technology progress will have capillary impact on society, meaning this effect is not confined to isolated or highly specialized areas of knowledge, but is expected to reach and have a pervasive influence on a broad range of society aspects: while this happens, the adoption of a responsible research and innovation approach to quantum technologies is mandatory, to accompany citizens in building awareness and future scaffolding. Following on all the above reflections, this perspective review is thus aimed at scientists active or interested in interdisciplinary research, providing the reader with an overview of the current status of these wide fields of research where cold and ultracold-atomic platforms play a vital role in their description and simulation.

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Section: Collisional Modelsmentioning

confidence: 99%

Atomic Quantum Technologies for Quantum Matter and Fundamental Physics Applications

Yago Malo,

Lepori,

Gentini

et al. 2024

Technologies

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“…The goal is to study the effect of interaction between the system and a hierarchically structured environment (HSE), on the steady state heat flux. Collision models have proven to be effective in the thermodynamic analysis of a network of qubits between two thermal baths [ 55 ], a qubit coupled to a structured environment [ 56 ] and a system of qubits interacting with a thermal and a coherent thermal bath [ 57 ]. Moreover, coupling with an HSE is demonstrated to have a profound effect on coherent exciton transfer [ 58 ].…”

Section: Introductionmentioning

confidence: 99%

Environment-Assisted Modulation of Heat Flux in a Bio-Inspired System Based on Collision Model

Ali

Çakmak

Müstecaplıoğlu

2022

Entropy

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The high energy transfer efficiency of photosynthetic complexes has been a topic of research across many disciplines. Several attempts have been made in order to explain this energy transfer enhancement in terms of quantum mechanical resources such as energetic and vibration coherence and constructive effects of environmental noise. The developments in this line of research have inspired various biomimetic works aiming to use the underlying mechanisms in biological light harvesting complexes for the improvement of synthetic systems. In this article, we explore the effect of an auxiliary hierarchically structured environment interacting with a system on the steady-state heat transport across the system. The cold and hot baths are modeled by a series of identically prepared qubits in their respective thermal states, and we use a collision model to simulate the open quantum dynamics of the system. We investigate the effects of system-environment, inter-environment couplings and coherence of the structured environment on the steady state heat flux and find that such a coupling enhances the energy transfer. Our calculations reveal that there exists a non-monotonic and non-trivial relationship between the steady-state heat flux and the mentioned parameters.

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“…However, it is noted that the multifunctional devices designed in previous investigations have a similar structure of electronic-like transistor where three independent thermal baths with different temperatures are connected to the quantum device, and many dynamic parameters are usually involved to carry out the thermal control of a certain function. In addition, the quantum effects influencing the dynamics of thermal system, such as quantum coherence or entanglement completely come from the system itself due to the coherent interactions among subsystems [20,67]. Therefore, of particular interest to us is whether a quantum device can operate as a multifunctional thermal machine with two baths, and execute the flexible switching among multiple functions by fewer controllable parameters or even a single one.…”

Section: Introductionmentioning

confidence: 99%

Heat Modulation on Target Thermal Bath via Coherent Auxiliary Bath

et al. 2021

Entropy

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We study a scheme of thermal management where a three-qubit system assisted with a coherent auxiliary bath (CAB) is employed to implement heat management on a target thermal bath (TTB). We consider the CAB/TTB being ensemble of coherent/thermal two-level atoms (TLAs), and within the framework of collision model investigate the characteristics of steady heat current (also called target heat current (THC)) between the system and the TTB. It demonstrates that with the help of the quantum coherence of ancillae the magnitude and direction of heat current can be controlled only by adjusting the coupling strength of system-CAB. Meanwhile, we also show that the influences of quantum coherence of ancillae on the heat current strongly depend on the coupling strength of system—CAB, and the THC becomes positively/negatively correlated with the coherence magnitude of ancillae when the coupling strength below/over some critical value. Besides, the system with the CAB could serve as a multifunctional device integrating the thermal functions of heat amplifier, suppressor, switcher and refrigerator, while with thermal auxiliary bath it can only work as a thermal suppressor. Our work provides a new perspective for the design of multifunctional thermal device utilizing the resource of quantum coherence from the CAB.

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Effect of Inter-System Coupling on Heat Transport in a Microscopic Collision Model

Cited by 4 publications

References 76 publications

Atomic Quantum Technologies for Quantum Matter and Fundamental Physics Applications

Atomic Quantum Technologies for Quantum Matter and Fundamental Physics Applications

Environment-Assisted Modulation of Heat Flux in a Bio-Inspired System Based on Collision Model

Heat Modulation on Target Thermal Bath via Coherent Auxiliary Bath

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