Coherent control of rare earth 4f shell wavefunctions in the quantum spin liquid Tb2Ti2O7

被引：2

作者：

Mankowsky, R. ^{[1
]}

Mueller, M. ^{[1
]}

Sander, M. ^{[1
]}

Zerdane, S. ^{[1
]}

Liu, X. ^{[1
]}

Babich, D. ^{[1
]}

Ueda, H. ^{[1
]}

Deng, Y. ^{[1
]}

Winkler, R. ^{[2
]}

Strudwick, B. ^{[1
]}

Savoini, M. ^{[2
]}

Giorgianni, F. ^{[1
]}

Johnson, S. L. ^{[1
,2
]}

Pomjakushina, E. ^{[1
]}

Beaud, P. ^{[1
]}

Fennell, T. ^{[1
]}

Lemke, H. T. ^{[1
]}

Staub, U. ^{[1
]}

机构：

[1] Paul Scherrer Inst, Villigen, Switzerland

[2] Swiss Fed Inst Technol, Inst Quantum Elect, Phys Dept, Zurich, Switzerland

来源：

NATURE COMMUNICATIONS | 2024年 / 15卷 / 01期

基金：

瑞士国家科学基金会;

关键词：

DYNAMICS; CRYSTAL;

D O I：

10.1038/s41467-024-51339-0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The resonant excitation of electronic transitions with coherent laser sources creates quantum coherent superpositions of the involved electronic states. Most time-resolved studies have focused on gases or isolated subsystems embedded in insulating solids, aiming for applications in quantum information. Here, we focus on the coherent control of orbital wavefunctions in the correlated quantum material Tb2Ti2O7, which forms an interacting spin liquid ground state. We show that resonant excitation with a strong THz pulse creates a coherent superposition of the lowest energy Tb 4f states. The coherence manifests itself as a macroscopic oscillating magnetic dipole, which is detected by ultrafast resonant x-ray diffraction. We envision the coherent control of orbital wavefunctions demonstrated here to become a new tool for the ultrafast manipulation and investigation of quantum materials.

引用

页数：6

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