Boosting quantum battery performance by structure engineering

• URL: http://arxiv.org/abs/2104.06522v1
• Date: Tue, 13 Apr 2021 21:34:55 GMT
• Title: Boosting quantum battery performance by structure engineering
• Authors: Junjie Liu and Dvira Segal
• Abstract summary: Quantum coherences, correlations and collective effects can be harnessed to the advantage of quantum batteries. We introduce a feasible structure engineering scheme that is applicable to spin-based open quantum batteries.
• Score: 6.211723927647019
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Quantum coherences, correlations and collective effects can be harnessed to the advantage of quantum batteries. Here, we introduce a feasible structure engineering scheme that is applicable to spin-based open quantum batteries. Our scheme, which builds solely upon a modulation of spin energy gaps, allows engineered quantum batteries to exploit spin-spin correlations for mitigating environment-induced aging. As a result of this advantage, an engineered quantum battery can preserve relatively more energy as compared with its non-engineered counterpart over the course of the storage phase. Particularly, the excess in stored energy is independent of system size. This implies a scale-invariant passive protection strategy, which we demonstrate on an engineered quantum battery with staggered spin energy gaps. Our findings establish structure engineering as a useful route for advancing quantum batteries, and bring new perspectives on efficient quantum battery designs.

Related papers

• Expressibility, entangling power and quantum average causal effect for causally indefinite circuits [37.69303106863453]
  We implement parameterized quantum circuits with definite and indefinite causal order. One of these is the expressibility, which measures how uniformly a given quantum circuit can reach the whole Hilbert space. We find a correlation between the quantum average causal effect and the entangling power.
  arXiv  Detail & Related papers  (2024-11-13T13:53:02Z)
• Harnessing Nth Root Gates for Energy Storage [30.733286944793527]
  We explore the use of fractional control-not gates in quantum thermodynamics. Nth-root gate allows for a paced application of two-qubit operations. We apply it in quantum thermodynamic protocols for charging a quantum battery.
  arXiv  Detail & Related papers  (2024-09-16T14:57:55Z)
• Solving an Industrially Relevant Quantum Chemistry Problem on Quantum Hardware [31.15746974078601]
  We calculate the lowest energy eigenvalue of active space Hamiltonians of industrially relevant and strongly correlated metal chelates on trapped ion quantum hardware. We are able to achieve chemical accuracy by training a variational quantum algorithm on quantum hardware, followed by a classical diagonalization in the subspace of states measured as outputs of the quantum circuit.
  arXiv  Detail & Related papers  (2024-08-20T12:50:15Z)
• Coupled vertical double quantum dots at single-hole occupancy [37.69303106863453]
  We control vertical double quantum dots confined in a double quantum well, silicon-germanium heterostructure. We sense individual charge transitions with a single-hole transistor. tuning the vertical double quantum dot to the (1,1) charge state confines a single hole in each quantum well beneath a single plunger gate.
  arXiv  Detail & Related papers  (2024-01-15T14:46:40Z)
• Nonreciprocal Quantum Batteries [0.0]
  We introduce nonreciprocity through reservoir engineering during the charging process, resulting in a substantial increase in energy accumulation. Despite local dissipation, the nonreciprocal approach demonstrates a fourfold increase in battery energy. In a broader context, the concept of nonreciprocal charging has significant implications for sensing, energy capture, and storage technologies.
  arXiv  Detail & Related papers  (2024-01-10T11:50:03Z)
• A quantum battery with quadratic driving [0.0]
  Quantum batteries are energy storage devices built using quantum mechanical objects. We study theoretically a bipartite quantum battery model, composed of a driven charger connected to an energy holder.
  arXiv  Detail & Related papers  (2023-11-04T15:01:36Z)
• Variational-quantum-eigensolver-inspired optimization for spin-chain work extraction [39.58317527488534]
  Energy extraction from quantum sources is a key task to develop new quantum devices such as quantum batteries. One of the main issues to fully extract energy from the quantum source is the assumption that any unitary operation can be done on the system. We propose an approach to optimize the extractable energy inspired by the variational quantum eigensolver (VQE) algorithm.
  arXiv  Detail & Related papers  (2023-10-11T15:59:54Z)
• Quantum data learning for quantum simulations in high-energy physics [55.41644538483948]
  We explore the applicability of quantum-data learning to practical problems in high-energy physics. We make use of ansatz based on quantum convolutional neural networks and numerically show that it is capable of recognizing quantum phases of ground states. The observation of non-trivial learning properties demonstrated in these benchmarks will motivate further exploration of the quantum-data learning architecture in high-energy physics.
  arXiv  Detail & Related papers  (2023-06-29T18:00:01Z)
• Enhancing the efficiency of open quantum batteries via adjusting the classical driving field [0.0]
  The study of open quantum batteries is motivated by the fact that real-world quantum systems are almost never perfectly isolated from their environment. The charging process of open quantum batteries under the influence of dissipative environment will be studied.
  arXiv  Detail & Related papers  (2023-03-31T08:41:04Z)
• Vacuum enhanced charging of a quantum battery [0.0]
  We show how a purely quantum effect related to the vacuum of the electromagnetic field can enhance the charging of a quantum battery. In particular, we demonstrate how an anti-Jaynes Cummings interaction can be used to increase the stored energy of an effective two-level atom.
  arXiv  Detail & Related papers  (2023-01-31T13:54:14Z)
• Quantum advantage of two-level batteries in self-discharging process [0.0]
  We study the decoherence effects that lead to charge leakage to the surrounding environment. The quantum advantage concerning the classical counterpart is highlighted for single- and multi-cell quantum batteries.
  arXiv  Detail & Related papers  (2020-12-22T13:38:09Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.