Superradiant phase transition with graphene embedded in one dimensional optical cavity
We theoretically investigate the cavity QED of graphene embedded in an optical cavity under perpendicular magnetic field. We consider the coupling of cyclotron transition and a multimode cavity described by a multimode Dicke model. This model exhibits a superradiant quantum phase transition, which w...
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sg-ntu-dr.10356-814832020-03-07T12:31:23Z Superradiant phase transition with graphene embedded in one dimensional optical cavity Li, Benliang Liu, Tao Hewak, Daniel W. Wang, Qi Jie School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences The Photonics Institute Centre for OptoElectronics and Biophotonics Centre for Disruptive Photonic Technologies Engineering::Electrical and electronic engineering Graphene Superradiant Phase Transition We theoretically investigate the cavity QED of graphene embedded in an optical cavity under perpendicular magnetic field. We consider the coupling of cyclotron transition and a multimode cavity described by a multimode Dicke model. This model exhibits a superradiant quantum phase transition, which we describe exactly in an effective Hamiltonian approach. The complete excitation spectrum in both the normal phase and superradiant phase regimes is given. In contrast to the single mode case, multimode coupling of cavity photon and cyclotron transition can greatly reduce the critical vacuum Rabi frequency required for quantum phase transition, and dramatically enhance the superradiant emission by fast modulating the Hamiltonian. Our work paves a way to experimental explorations of quantum phase transitions in solid state systems. 2019-11-12T08:44:27Z 2019-12-06T14:31:58Z 2019-11-12T08:44:27Z 2019-12-06T14:31:58Z 2017 Journal Article Li, B., Liu, T., Hewak, D. W., & Wang, Q. J. (2018). Superradiant phase transition with graphene embedded in one dimensional optical cavity. Superlattices and Microstructures, 113, 401-408. doi:10.1016/j.spmi.2017.11.020 0749-6036 https://hdl.handle.net/10356/81483 http://hdl.handle.net/10220/50392 10.1016/j.spmi.2017.11.020 en Superlattices and Microstructures © 2017 Elsevier Ltd. All rights reserved. This paper was published in Superlattices and Microstructures and is made available with permission of Elsevier Ltd. |
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Engineering::Electrical and electronic engineering Graphene Superradiant Phase Transition Li, Benliang Liu, Tao Hewak, Daniel W. Wang, Qi Jie Superradiant phase transition with graphene embedded in one dimensional optical cavity |
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We theoretically investigate the cavity QED of graphene embedded in an optical cavity under perpendicular magnetic field. We consider the coupling of cyclotron transition and a multimode cavity described by a multimode Dicke model. This model exhibits a superradiant quantum phase transition, which we describe exactly in an effective Hamiltonian approach. The complete excitation spectrum in both the normal phase and superradiant phase regimes is given. In contrast to the single mode case, multimode coupling of cavity photon and cyclotron transition can greatly reduce the critical vacuum Rabi frequency required for quantum phase transition, and dramatically enhance the superradiant emission by fast modulating the Hamiltonian. Our work paves a way to experimental explorations of quantum phase transitions in solid state systems. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Li, Benliang Liu, Tao Hewak, Daniel W. Wang, Qi Jie |
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Article |
author |
Li, Benliang Liu, Tao Hewak, Daniel W. Wang, Qi Jie |
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Li, Benliang |
title |
Superradiant phase transition with graphene embedded in one dimensional optical cavity |
title_short |
Superradiant phase transition with graphene embedded in one dimensional optical cavity |
title_full |
Superradiant phase transition with graphene embedded in one dimensional optical cavity |
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Superradiant phase transition with graphene embedded in one dimensional optical cavity |
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Superradiant phase transition with graphene embedded in one dimensional optical cavity |
title_sort |
superradiant phase transition with graphene embedded in one dimensional optical cavity |
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2019 |
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https://hdl.handle.net/10356/81483 http://hdl.handle.net/10220/50392 |
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