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Xu K, Li HG, Zhu HJ, Liu WM. Inhibiting the self-discharging process of quantum batteries in non-Markovian noises. Phys Rev E 2024; 109:054132. [PMID: 38907473 DOI: 10.1103/physreve.109.054132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 05/08/2024] [Indexed: 06/24/2024]
Abstract
One of the main challenges in developing high-performance quantum batteries is the self-discharging process, where energy is dissipated from a quantum battery into the environment. In this work, we investigate the influence of non-Markovian noises on the performance of a quantum battery. Our results demonstrate that adding auxiliary qubits to a quantum battery system can effectively suppress the self-discharging process, leading to an improvement in both the steady-state energy and extractable work. We reveal that the physical mechanism inhibiting the self-discharging process is the formation of system-environment bound states, rather than an increase in non-Markovianity. Our results could be of both theoretical and experimental interest in exploring the ability of quantum batteries to maintain long stored energy in the environment.
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Affiliation(s)
| | | | | | - Wu-Ming Liu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
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Song WL, Liu HB, Zhou B, Yang WL, An JH. Remote Charging and Degradation Suppression for the Quantum Battery. PHYSICAL REVIEW LETTERS 2024; 132:090401. [PMID: 38489615 DOI: 10.1103/physrevlett.132.090401] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 01/22/2024] [Indexed: 03/17/2024]
Abstract
The quantum battery (QB) makes use of quantum effects to store and supply energy, which may outperform its classical counterpart. However, there are two challenges in this field. One is that the environment-induced decoherence causes the energy loss and aging of the QB, the other is that the decreasing of the charger-QB coupling strength with increasing their distance makes the charging of the QB become inefficient. Here, we propose a QB scheme to realize a remote charging via coupling the QB and the charger to a rectangular hollow metal waveguide. It is found that an ideal charging is realized as long as two bound states are formed in the energy spectrum of the total system consisting of the QB, the charger, and the electromagnetic environment in the waveguide. Using the constructive role of the decoherence, our QB is immune to the aging. Additionally, without resorting to the direct charger-QB interaction, our scheme works in a way of long-range and wireless-like charging. Effectively overcoming the two challenges, our result supplies an insightful guideline to the practical realization of the QB by reservoir engineering.
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Affiliation(s)
- Wan-Lu Song
- Department of Physics, Hubei University, Wuhan 430062, China
| | - Hai-Bin Liu
- Department of Physics, Hubei University, Wuhan 430062, China
| | - Bin Zhou
- Department of Physics, Hubei University, Wuhan 430062, China
| | - Wan-Li Yang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China
| | - Jun-Hong An
- Key Laboratory of Quantum Theory and Applications of MoE, Lanzhou Center for Theoretical Physics, and Key Laboratory of Theoretical Physics of Gansu Province, Lanzhou University, Lanzhou 730000, China
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Mojaveri B, Jafarzadeh Bahrbeig R, Fasihi MA, Babanzadeh S. Enhancing the direct charging performance of an open quantum battery by adjusting its velocity. Sci Rep 2023; 13:19827. [PMID: 37964073 PMCID: PMC10645758 DOI: 10.1038/s41598-023-47193-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 11/10/2023] [Indexed: 11/16/2023] Open
Abstract
The performance of open quantum batteries (QBs) is severely limited by decoherence due to the interaction with the surrounding environment. So, protecting the charging processes against decoherence is of great importance for realizing QBs. In this work we address this issue by developing a charging process of a qubit-based open QB composed of a qubit-battery and a qubit-charger, where each qubit moves inside an independent cavity reservoir. Our results show that, in both the Markovian and non-Markovian dynamics, the charging characteristics, including the charging energy, efficiency and ergotropy, regularly increase with increasing the speed of charger and battery qubits. Interestingly, when the charger and battery move with higher velocities, the initial energy of the charger is completely transferred to the battery in the Markovian dynamics. In this situation, it is possible to extract the total stored energy as work for a long time. Our findings show that open moving-qubit systems are robust and reliable QBs, thus making them a promising candidate for experimental implementations.
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Affiliation(s)
- B Mojaveri
- Department of Physics, Azarbaijan Shahid Madani University, PO Box 51745-406, Tabriz, Iran.
| | - R Jafarzadeh Bahrbeig
- Department of Physics, Azarbaijan Shahid Madani University, PO Box 51745-406, Tabriz, Iran
| | - M A Fasihi
- Department of Physics, Azarbaijan Shahid Madani University, PO Box 51745-406, Tabriz, Iran
| | - S Babanzadeh
- Department of Physics, Azarbaijan Shahid Madani University, PO Box 51745-406, Tabriz, Iran
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Šafránek D, Rosa D, Binder FC. Work Extraction from Unknown Quantum Sources. PHYSICAL REVIEW LETTERS 2023; 130:210401. [PMID: 37295083 DOI: 10.1103/physrevlett.130.210401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 04/07/2023] [Indexed: 06/12/2023]
Abstract
Energy extraction is a central task in thermodynamics. In quantum physics, ergotropy measures the amount of work extractable under cyclic Hamiltonian control. As its full extraction requires perfect knowledge of the initial state, however, it does not characterize the work value of unknown or untrusted quantum sources. Fully characterizing such sources would require quantum tomography, which is prohibitively costly in experiments due to the exponential growth of required measurements and operational limitations. Here, we therefore derive a new notion of ergotropy applicable when nothing is known about the quantum states produced by the source, apart from what can be learned by performing only a single type of coarse-grained measurement. We find that in this case the extracted work is defined by the Boltzmann and observational entropy in cases where the measurement outcomes are, or are not, used in the work extraction, respectively. This notion of ergotropy represents a realistic measure of extractable work, which can be used as the relevant figure of merit to characterize a quantum battery.
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Affiliation(s)
- Dominik Šafránek
- Center for Theoretical Physics of Complex Systems, Institute for Basic Science (IBS), Daejeon - 34126, Korea
| | - Dario Rosa
- Center for Theoretical Physics of Complex Systems, Institute for Basic Science (IBS), Daejeon - 34126, Korea
- Basic Science Program, Korea University of Science and Technology (UST), Daejeon-34113, Korea
| | - Felix C Binder
- School of Physics, Trinity College Dublin, Dublin 2, Ireland
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Zhang W, Wang S, Wu C, Wang G. Quantum battery based on dipole-dipole interaction and external driving field. Phys Rev E 2023; 107:054125. [PMID: 37329039 DOI: 10.1103/physreve.107.054125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 05/02/2023] [Indexed: 06/18/2023]
Abstract
The Dicke model is a fundamental model in quantum optics, which describes the interaction between quantum cavity field and a large ensemble of two-level atoms. In this work, we propose an efficient charging quantum battery achieved by considering an extension Dicke model with dipole-dipole interaction and an external driving field. We focus on the influence of the atomic interaction and the driving field on the performance of the quantum battery during the charging process and find that the maximum stored energy exhibits a critical phenomenon. The maximum stored energy and maximum charging power are investigated by varying the number of atoms. When the coupling between atoms and cavity is not very strong, compared to the Dicke quantum battery, such quantum battery can achieve more stable and faster charging. In addition, the maximum charging power approximately satisfies a superlinear scaling relation P_{max}∝βN^{α}, where the quantum advantage α=1.6 can be reached via optimizing the parameters.
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Affiliation(s)
- Wuji Zhang
- Center for Quantum Sciences and School of Physics, Northeast Normal University, Changchun 130024, China
| | - Shuyue Wang
- Center for Quantum Sciences and School of Physics, Northeast Normal University, Changchun 130024, China
| | - Chunfeng Wu
- Science, Mathematics and Technology, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore
| | - Gangcheng Wang
- Center for Quantum Sciences and School of Physics, Northeast Normal University, Changchun 130024, China
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Bhandari B, Czupryniak R, Erdman PA, Jordan AN. Measurement-Based Quantum Thermal Machines with Feedback Control. ENTROPY (BASEL, SWITZERLAND) 2023; 25:204. [PMID: 36832571 PMCID: PMC9955564 DOI: 10.3390/e25020204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 01/13/2023] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Abstract
We investigated coupled-qubit-based thermal machines powered by quantum measurements and feedback. We considered two different versions of the machine: (1) a quantum Maxwell's demon, where the coupled-qubit system is connected to a detachable single shared bath, and (2) a measurement-assisted refrigerator, where the coupled-qubit system is in contact with a hot and cold bath. In the quantum Maxwell's demon case, we discuss both discrete and continuous measurements. We found that the power output from a single qubit-based device can be improved by coupling it to the second qubit. We further found that the simultaneous measurement of both qubits can produce higher net heat extraction compared to two setups operated in parallel where only single-qubit measurements are performed. In the refrigerator case, we used continuous measurement and unitary operations to power the coupled-qubit-based refrigerator. We found that the cooling power of a refrigerator operated with swap operations can be enhanced by performing suitable measurements.
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Affiliation(s)
- Bibek Bhandari
- Institute for Quantum Studies, Chapman University, Orange, CA 92866, USA
| | - Robert Czupryniak
- Institute for Quantum Studies, Chapman University, Orange, CA 92866, USA
- Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA
- Center for Coherence and Quantum Optics, University of Rochester, Rochester, NY 14627, USA
| | - Paolo Andrea Erdman
- Department of Mathematics and Computer Science, Freie Universität Berlin, Arnimallee 6, 14195 Berlin, Germany
| | - Andrew N. Jordan
- Institute for Quantum Studies, Chapman University, Orange, CA 92866, USA
- Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA
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