WANG Genyan,LI Shiyan,ZHU Aidong.Squeezing of magnons in a coupled cavity - magnonic system[J].Journal of Yanbian University,2021,47(04):303-308,339.
耦合腔磁系统中磁子的压缩
- Title:
- Squeezing of magnons in a coupled cavity - magnonic system
- 文章编号:
- 1004-4353(2021)04-0303-07
- 分类号:
- O413.2
- 文献标志码:
- A
- 摘要:
- 提出了一个在耦合腔 - 磁系统中制备磁子压缩态的方案.该系统由两个内部分别嵌入钇铁石榴石球的微波腔通过超导传输线相互耦合组成,磁子与微波腔之间存在磁偶极相互作用.利用弱压缩真空场驱动其中一个微波腔能够产生磁子压缩态.数值计算结果表明,相比于克尔非线性机制的方案,该方案产生的磁子压缩度更高.该方案可为研究多个磁子的压缩提供参考.
- Abstract:
- We propose a scheme to prepare magnon squeezed states in a coupled cavity magnonic system. The system consists of two microwave cavities embedded with two macroscopic yttrium iron garnet spheres, respectively, coupled with each other through a superconducting transmission line. The magnon interacts with the cavity via the magnetic dipole interaction. By using a weak squeezed vacuum field to drive one of the cavities, the magnon squeezed state can be produced. The numerical results show that compared with scheme with Kerr nonlinearity, the current scheme has a higher squeezing degree. This scheme can provide references for the study of squeezing for multiple magnons.
参考文献/References:
[1] MARKUS A, TOBIAS J K, FLORIAN M.Cavity optomechanics[J].Reviews of Modern Physics, 2014,86:1391.
[2] WOLLMAN E E, LEI C U, WEINSTEIN A J, et al.Quantum squeezing of motion in a mechanical resonator[J].Science, 2015,349(6251):952 - 955.
[3] HOU K, ZHU C J, YANG Y P, et al.Interfering pathways for photon blockade in cavity QED with one and two qubits[J].Physical Reviews A, 2019,100:063817.
[4] RIEDINGER R, WALLUCKS A, MARINKOVIC L, et al.Remote quantum entanglement between two micromechanical oscillators[J].Nature, 2018,556:473 - 477.
[5] OCKELOEN C F, DAMSKAGG E, PIRKKALAINEN J M, et al.Stabilized entanglement of massive mechanical oscillators[J].Nature, 2018,556:478 - 482.
[6] SOYKAL O O, FLATTE M E.Size dependence of strong coupling between nanomagnets and photonic cavities[J].Physical Review B, 2010,82(10):104413.
[7] HAIGH J A, NUNNENKAMP A, RAMSAY A J, et al.Triple - resonant brillouin light scattering in magneto - optical cavities[J].Physical Review Letters, 2016,117(13):133602.
[8] ZHANG D K, WANG X M, LI T F, et al.Cavity quantum electrodynamics with ferromagnetic magnons in a small yttrium - iron - garnet sphere[J].NPJ Quantum Information, 2015,1:15014.
[9] CHEREPANOV V, KOLOKOLOVB L, LVOV V.The saga of YIG: spectra, thermodynamics, interaction and relaxation of magnons in a complex magnet[J].Physics Reports, 1993,229(3):81 - 144.
[10] ZHANG X F, ZOU C L, TANG H X, et al.Strongly coupled magnons and cavity microwave photons[J].Physical Review Letters, 2014,113:156401.
[11] BOURHILL J, KOSTYLEV N, GORYACHEV M, et al.Ultrahigh cooperativity interactions between magnons and resonant photons in a YIG sphere[J].Physical Reviews B, 2016,93:144420.
[12] LI J, ZHU S Y, AGARWAL G S.Squeezed states of magnons and phonons in cavity magnomechanics[J].Physical Reviews A, 2019,99:0261801.
[13] HOLSTEIN T, PRIMAKOFF H.Field dependence of the intrinsic domain magnetization of a ferromagnet[J].Physical Review Journals Archive, 1940,58:1098.
[14] GARDINER C W.Inhibition of atomic phase decays by squeezed light: a direct effect of squeezing[J].Physical Review Letters, 1986,56:1917.
[15] PARKS P C, HAHN V.Stability Theory[M].Newyork: Prentice Hall, 1993.
[16] DEJESUS E X, KAUFMAN C.Routh - hurwitz criterion in the examination of eigenvalues of a system of nonlinear ordinary differential equations[J].Physical Reviews A, 1987,35(12):5288 - 5290.
[17] ZHANG X F, ZOU C L, TANG H X, et al.Cavity magnomechanics[J].Science Advances, 2016,2:e1501286.
[18] YANG Z B, JIN H, JIN J W, et al.Bistability of squeezing and entanglement in cavity magnonics[J].Physical Review Research, 2021,3:023126.
备注/Memo
收稿日期: 2021-04-28
基金项目: 国家自然科学基金(11564041)
第一作者: 王根艳(1996—),女,在读硕士,研究方向为量子光学.
通信作者: 朱爱东(1968—),女,博士,教授,研究方向为量子信息学和量子光学.