-
Magnons, as quasiparticles arising from spin wave excitations in magnetic materials, have demonstrated significant application potential in quantum information technology, spintronics, and microwave engineering in recent years. The cavity magnon optomechanical system, serving as a key platform for investigating magnetooptical interactions, has advanced the exploration of nonlinear dynamical behaviors and the innovative design of quantum devices through strong coupling between magnons, photons, and phonons. However, traditional single-cavity systems face limitations in terms of tunability, long-range interactions, and nonlinear enhancement, making them insufficient for complex quantum control requirements. In recent years, dual-cavity systems have emerged as a research hotspot due to their multidimensional control capabilities enabled by inter-cavity coupling, such as photon mode splitting and enhanced nonlinear Kerr effects. Concurrently, semiconductor quantum dots, owing to their tunable nonlinear response characteristics, offer a novel pathway for regulating magnon dynamics. In this work, we construct a novel coupled quantum system by integrating quantum dots and a dual-cavity architecture, and investigate the bistable phenomena under both forward and backward driving field inputs. By comparing the third-order nonlinear equations governing magnon populations in the two scenarios, we derive the impedance matching condition. When this condition is satisfied, the magnon responses induced by forward and backward driving fields are identical. Conversely, under impedance mismatch, the magnon responses exhibit distinct behaviors. Specifically, when the impedance matching condition is violated, the dual-cavity magnon optomechanical system incorporating three-level quantum dot molecules exhibits a lower bistability threshold compared to its counterpart without quantum dots. This allows transitions from the low to high steady states with reduced driving field intensities, enabling switching functionality at lower input powers. Furthermore, we establish a multiparameter cooperative control model, revealing a three-dimensional parameter space formed by tunneling coupling, cavity-quantum dot coupling, and inter-cavity coupling. By adjusting these coupling strengths, the bistability threshold and hysteresis loop width can be effectively controlled, thereby modulating the driving field intensity required for bistability. This system holds promise for experimental observation of magnonic bistability through vector network analyzer-based detection of abrupt changes in transmission or absorption windows within reflection spectra. Such capabilities could advance data signal transmission, switching devices, and memory technologies, potentially serving as components in large-scale quantum information processing units. Additionally, this research may find important applications in the field of magnetic spintronics.
-
Keywords:
- Cavity optomagnonics /
- Magnonic bistability /
- Quantum dot molecules
-
[1] Chumak A V, Serga A A, Hillebrands B 2014 Nat. Communications, 5 4700
[2] Yuan H Y, Yung M H 2018 Phys. Rev. B 95 060405
[3] Zhang X F, Zou C L, Jiang L, Tang H X 2014 Phys. Rev. Lett. 113 156401
[4] Sharma S, Blanter Y M, Bauer G E W 2018 Phys. Rev. Lett. 121 087205
[5] Wang B, Jia X, Lu X H, Xiong H 2022 Phys. Rev. A 105 053705
[6] Ghasemian E, Rafeie M, Musavi S A S, Kheirabady M S, Tavassoly M K 2024 Eur. Phys. J. Plus, 139 694
[7] Liao Q H, Peng K, Qiu H Y 2023 Chin. Phys. B 32 054205
[8] Liao Q H, Xiao X, Nie W J, Zhou N R 2020 Opt. Express 28 5288
[9] Huang B, Yu J L, Wang W R, Wang J, Xue J Q,Yu Y, Jia S, Yang E Z, 2015 Acta Phys. Sin. 64 094209 (in Chinese) [黄标，于晋龙，王文睿，王菊，薛纪强，于洋，贾石，杨恩泽 2015 64 094209]
[10] Soykal O O, Flatté M E 2010 Phys. Rev. Lett. 104 077202
[11] Soykal O O, Flatté M E 2010 Phys. Rev. B 82 104413
[12] Li H Y 2020 Ceram. Int. 46 15408
[13] Mukherjee K, Jana P C 2023 J. Korean Phys. Soc. 82 356
[14] Bhatt V, Singh M K, Agrawal A, Jha P K, Bhattacherjee A B 2024. J. Opt. Soc. Am. B 41 1187
[15] Li J, Zhu S Y, Agarwal G S 2018 Phys. Rev. Lett. 121 203601
[16] Li J, Wang Y P, You J Q, Zhu S Y 2023 Natl. Sci. Rev. 10 nwac247
[17] Yu M, Shen H, Li J 2020 Phys. Rev. Lett. 124 213604
[18] Fan Z Y, Qiu L, Groblacher S, Li J 2023 Laser & Photonics Rev. 17 2200866
[19] Li H T, Fan Z Y, Zhu H B, Groblacher S, Li J 2024 Laser & Photonics Rev. 19 2401348
[20] Qian H, Fan Z Y, Li J 2022 Quantum Sci. Technol. 8 015022
[21] Fabiha R, Lundquist J, Majumder S 2022 Adv. Sci. 9 2104644
[22] Zhang D K, Luo X Q, Wang Y P, Li T F, You J Q 2017 Nat. Communications 8 1368
[23] Wang Y P, Zhang G Q, Zhang D K, Li T F, Hu C M, You J Q 2018 Phys. Rev. Lett. 120 057202
[24] Ghasemian E, Rafeie M, Musavi S A S, Kheirabady M. S, Tavassoly M K 2024 Eur. Phys. J. Plus 139 694
[25] Wang B, Jia X, Lu X H, Xiong H 2022 Phys. Rev. A 105 053705
[26] Kurizki G, Bertet P, Kubo Y, Molmerc K, Petrosyand D, Rablf P, Schmiedmayer J 2015 PNAS 112 3866.
[27] Aspelmeyer M, Kippenberg T J, Marquardt F 2014 Rev. Mod. Phys. 84 1391
[28] Childress L, Sorensen A S, Lukin M D 2004 Phys. Rev. A, 69 042302
[29] Guo Y, Ma S S, Shu C C 2024 Chin. Phys. B 33 024203
[30] Petroff P M, Lorke A, Imamoglu A 2001 Phys. Today 54 46
[31] Liu G, Xiong W, Ying Z J 2023 Phys. Rev. A 108, 033704
[32] Ullah K 2019 Phys. Lett. A 383 3074
[33] Chen B, Shang L, Wang X F, Chen J B, Xue H B, Liu X, Zhang J 2019 Phys. Rev. A 99 063810
[34] Kong C, Xiong H, Wu Y 2019 Phys. Rev. Appl. 12 034001
[35] Shen R C, Li J, Fan Z Y, Wang Y P, You J Q 2022 Phys. Rev. Lett. 129 123601
[36] Yadav S, Bhattacherjee A B 2023 Phys. Scr. 98 025102
[37] Xu X W, Song L N, Zheng Q, Wang Z H, Li Y 2018 Phys. Rev. A 98 063845
Metrics
- Abstract views: 116
- PDF Downloads: 4
- Cited By: 0
下载:
