Related papers: Quantum battery based on superabsorption

Quantum battery based on superabsorption

URL: http://arxiv.org/abs/2205.03823v1
Date: Sun, 8 May 2022 09:35:59 GMT
Title: Quantum battery based on superabsorption
Authors: Yudai Ueki, Shunsuke Kamimura, Yuichiro Matsuzaki, Kyo Yoshida and Yasuhiro Tokura
Abstract summary: We propose a quantum battery with a charger system composed of $N$ qubits by utilizing a collective effect called a superabsorption. Our results open the path to ultra-fast charging of a quantum battery.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: A quantum battery is a device where an energy is charged by using a quantum effect. Here, we propose a quantum battery with a charger system composed of $N$ qubits by utilizing a collective effect called a superabsorption. Importantly, the coupling strength between the quantum battery and charger system can be enhanced due to an entanglement. While the charger time scales as $\Theta\left(N^{-1/2}\right)$ by applying a conventional scheme, we can achieve a charging time $\Theta\left(N^{-1}\right)$ in our scheme. Our results open the path to ultra-fast charging of a quantum battery.

Related papers

Scrambling in the Charging of Quantum Batteries [3.5621685463862356]
This Letter investigates the role of quantum scrambling in quantum batteries and its effect on optimal power and charging times. By analyzing the dynamics of out-of-time-order correlators, our findings indicate that quantum scrambling does not necessarily lead to faster charging, despite its potential for accelerating the process.
arXiv Detail & Related papers (2024-09-16T16:11:55Z)
Dual-cavity controllable quantum battery [0.0]
We propose a controllable dual-cavity quantum battery which can increase the charging power without diminishing capacity of the quantum batteries. This control method can effectively adjust the charging power of quantum batteries from $N2$ times to $N2.5$ times, and even to $N3$ times.
arXiv Detail & Related papers (2024-06-10T15:43:51Z)
Hyperbolic enhancement of a quantum battery [0.0]
We show how one can circumvent the problem of energy loss by proposing a quantum battery model. Namely, charging the battery quadratically with a short temporal pulse induces a hyperbolic enhancement in the stored energy. We show that when the driving is strong enough the useful work which can be extracted from the quantum battery, that is the ergotropy, is exactly equal to the stored energy.
arXiv Detail & Related papers (2024-05-19T20:13:04Z)
Many-body quantum register for a spin qubit [31.114245664719455]
We demonstrate a functional quantum register in a semiconductor quantum dot. Our work establishes how many-body physics can add step-change functionality to quantum devices.
arXiv Detail & Related papers (2024-04-30T16:13:01Z)
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)
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)
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)
Field-deployable Quantum Memory for Quantum Networking [62.72060057360206]
We present a quantum memory engineered to meet real-world deployment and scaling challenges. The memory technology utilizes a warm rubidium vapor as the storage medium, and operates at room temperature. We demonstrate performance specifications of high-fidelity retrieval (95%) and low operation error $(10-2)$ at a storage time of 160 $mu s$ for single-photon level quantum memory operations.
arXiv Detail & Related papers (2022-05-26T00:33:13Z)
Quantum thermodynamic methods to purify a qubit on a quantum processing unit [68.8204255655161]
We report on a quantum thermodynamic method to purify a qubit on a quantum processing unit equipped with identical qubits. Our starting point is a three qubit design that emulates the well known two qubit swap engine. We implement it on a publicly available superconducting qubit based QPU, and observe a purification capability down to 200 mK.
arXiv Detail & Related papers (2022-01-31T16:13:57Z)
Quantum speed-up in collisional battery charging [0.0]
We present a collision model for the charging of a quantum battery by identical nonequilibrium qubit units. We show that coherent protocols can yield higher charging power than any possible incoherent strategy.
arXiv Detail & Related papers (2021-05-05T04:28:43Z)
A Frequency-Multiplexed Coherent Electro-Optic Memory in Rare Earth Doped Nanoparticles [94.37521840642141]
Quantum memories for light are essential components in quantum technologies like long-distance quantum communication and distributed quantum computing. Recent studies have shown that long optical and spin coherence lifetimes can be observed in rare earth doped nanoparticles. We report on coherent light storage in Eu$3+$:Y$$O$_3$ nanoparticles using the Stark Echo Modulation Memory (SEMM) quantum protocol.
arXiv Detail & Related papers (2020-06-17T13:25:54Z)

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