Landauer's principle in qubit-cavity quantum-field-theory interaction in vacuum and thermal states

Xu，Hao1; Ong，Yen Chin1,2; Yung，Man Hong3,4,5,6

2022

10.1103/PhysRevA.105.012430

Physical Review A   影响因子和分区

2469-9926

2469-9934

Landauer's principle has seen a boom of interest in the last few years due to the growing interest in quantum information sciences. However, its relevance and validity in the contexts of quantum field theory (QFT) remain surprisingly unexplored. In the present paper, we consider Landauer's principle in qubit-cavity QFT interaction perturbatively, in which the initial state of the cavity QFT is chosen to be a vacuum or thermal state. In the vacuum case, the QFT always absorbs heat and jumps to excited states. For the qubit at rest, its entropy decreases, whereas if the qubit accelerates it may also gain energy and it increases its entropy due to the Unruh effect. For the thermal state, the QFT can both absorb and release heat, depending on its temperature and the initial state of the qubit, and the higher-order perturbations can excite or deexcite the initial state to a higher or lower state. Landauer's principle is valid in all the cases we consider. We hope that this paper will pave the way for future explorations of Landauer's principle in QFT and gravity theories.

SCI ; EI

英语

其他

Natural Science Foundation of the Jiangsu Higher Education Institutions of China[20KJD140001] ; National Natural Science Foundation of China[11922508,11875160,"U1801661"] ; Nat-ural Science Foundation of Guangdong Province[2017B030308003] ; Key-Area Research and De-velopment Program of Guangdong province[2018B030326001] ; Science, Technology, and Innova-tion Commission of Shenzhen Municipality["JCYJ20170412152620376","JCYJ20170817105046702","KYTDPT20181011104202253"] ; Economy, Trade, and Information Commis-sion of Shenzhen Municipality[201901161512] ; Guangdong Provincial Key Laboratory[2019B121203002]

Optics ; Physics

Optics ; Physics, Atomic, Molecular & Chemical

WOS:000773381700003

AMER PHYSICAL SOC

20220611608556

Quantum optics ; Qubits

Thermodynamics:641.1 ; Light, Optics and Optical Devices:741 ; Light/Optics:741.1 ; Nanotechnology:761 ; Quantum Theory; Quantum Mechanics:931.4

PHYSICS

2-s2.0-85124121685

Scopus

1.Center for Gravitation and Cosmology,College of Physical Science and Technology,Yangzhou University,Yangzhou,180 Siwangting Road, Jiangsu Province,225002,China
2.Shanghai Frontier Science Center for Gravitational Wave Detection,Shanghai Jiao Tong University,Shanghai,200240,China
3.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
4.Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
5.Guangdong Provincial Key Laboratory of Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
6.Shenzhen Key Laboratory of Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Xu，Hao,Ong，Yen Chin,Yung，Man Hong. Landauer's principle in qubit-cavity quantum-field-theory interaction in vacuum and thermal states[J]. Physical Review A,2022,105(1).

Xu，Hao,Ong，Yen Chin,&Yung，Man Hong.(2022).Landauer's principle in qubit-cavity quantum-field-theory interaction in vacuum and thermal states.Physical Review A,105(1).

Xu，Hao,et al."Landauer's principle in qubit-cavity quantum-field-theory interaction in vacuum and thermal states".Physical Review A 105.1(2022).