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I analyze electron transport through a Y-junction formed by helical edge states of a two-dimensional topological insulator (2DTI), focusing on the strongly interacting regime. An experimentally motivated device geometry and a…

Mesoscale and Nanoscale Physics · Physics 2025-09-09 E. Novais

We present an electrically-driven scheme for spin-photon quantum interfaces used in quantum networks. Through modulating the motion of a nano cantilever with voltages, optomechanical coupling and spin-mechanical coupling can be…

Quantum Physics · Physics 2024-12-17 Fang-Yu Hong

We experimentally emulate interaction induced blockade and local spin freezing in two and three qubit Nuclear Magnetic Resonance (NMR) architecture. These phenomena are identical to the Rydberg blockade and Rydberg biased freezing. In…

Quantum Physics · Physics 2021-07-14 V. R. Krithika , Soham Pal , Rejish Nath , T. S. Mahesh

Skyrmion nucleation induced by spin-transfer torques at an interface of a topological insulator and a ferromagnetic insulator is investigated. Due to strong spin-orbit coupling on a surface of topological insulators, which enhances the…

Mesoscale and Nanoscale Physics · Physics 2022-11-16 Daichi Kurebayashi , Oleg A. Tretiakov

The quasicrystal Al-Pd-Mn is a model system for an experimental study of the competition between Ruderman-Kittel-Kasuya-Yoshida (RKKY) and Kondo interactions. First, specific of such alloys, only a few Mn atoms carry an effective spin and…

Strongly Correlated Electrons · Physics 2009-11-11 J. J. Prejean , E. Lhotel , A. Sulpice , F. Hippert

We study the prospect of using magnetic nanoparticles for the diluted magnetic seminconductors. The Ruderman-Kittel-Kasuya-Yosida formula is modified by explicitly taking into account the role of charge carriers inside the nanoparticles in…

Materials Science · Physics 2008-01-24 C. H. Chang , T. M. Hong

We present a theoretical method for the design and optimization of quantum corrals with specific electronic properties. Taking advantage that spins are subject to a RKKY interaction that is directly controlled by the scattering of the…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Alfredo A. Correa , Fernando A. Reboredo , C. A. Balseiro

We consider RKKY interaction between two magnetic impurities in graphene. The consideration is based on the perturbation theory for the thermodynamic potential in the imaginary time representation. We analyze the symmetry of the RKKY…

Mesoscale and Nanoscale Physics · Physics 2017-12-29 E. Kogan

Spin-orbit coupling induced anisotropies of plasmon dynamics are investigated in two-dimensional semiconductor structures. The interplay of the linear Bychkov-Rashba and Dresselhaus spin-orbit interactions drastically affects the plasmon…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 S. M. Badalyan , A. Matos-Abiague , G. Vignale , J. Fabian

Arrays of highly excited Rydberg atoms can be used as powerful quantum simulation platforms. Here, we introduce an approach that makes it possible to implement fully controllable effective spin interactions in such systems. We show that…

Quantum Physics · Physics 2022-12-01 Xiaoling Wu , Fan Yang , Shuo Yang , Klaus Mølmer , Thomas Pohl , Meng Khoon Tey , Li You

We propose and experimentally measure an entropy that quantifies the volume of correlations among qubits. The experiment is carried out on a nearly isolated quantum system composed of a central spin coupled and initially uncorrelated with…

Quantum Physics · Physics 2021-08-25 Mohamad Niknam , Lea F. Santos , David G. Cory

Interfacial engineering enables various emergent effects such as spin reorientations and transport anisotropy. Noncollinear spin textures are essential for realizing many emergent quantum transport phenomena. However, driving such spin…

We present a non-perturbative calculation of indirect exchange interaction between two paramagnetic impurities via 2D free carriers gas separated by a tunnel barrier. The new method accounts for the impurity attractive potential producing a…

Mesoscale and Nanoscale Physics · Physics 2013-11-13 I. V. Rozhansky , I. V. Kraynov , N. S. Averkiev , E. Lahderanta

Strong long-range coupling between distant spins is crucial for spin-based quantum information processing. However, achieving such a strong spin-spin coupling remains challenging. Here we propose to realize a strong coupling between two…

Quantum Physics · Physics 2022-06-30 Wei Xiong , Miao Tian , Guo-Qiang Zhang , J. Q. You

One pillar of quantum magnonics is the exploration of the utilization of the mediation role of magnons in different platforms to develop quantum technologies. The efficient coupling between magnons and various quantum entities is a…

Quantum Physics · Physics 2023-11-29 Feng-Zhou Ji , Jun-Hong An

We develop a self-consistent theory for current-induced spin wave excitations in normal metal-magnetic insulator bilayer systems, thereby establishing the relation between spin wave excitation and the experimentally controlled parameters.…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 Yan Zhou , Hu-jun Jiao , Yan-ting Chen , Gerrit E. W. Bauer , Jiang Xiao

We propose versatile materials based on the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction in a zigzag silicene nanoribbon (ZSNR) on half filling in the presence of an out-of-plane electric field. We show that the topological phase…

Mesoscale and Nanoscale Physics · Physics 2016-08-04 Moslem Zare , Fariborz Parhizgar , Reza Asgari

Using the Landauer-B\"utikker formalism, we study the graphene magneto-transport in the presence of Rashba spin-orbit interaction (RSOI). We show that the angle resolved transmission probability in the proposed structures can be tuned by…

Mesoscale and Nanoscale Physics · Physics 2018-12-05 Razieh Beiranvand , Hossein Hamzehpour

Current typical methods to realize nuclear-nuclear quantum gates require a sequence of electronnuclear quantum gates by using dynamical decoupling techniques, which are implemented at low temperature because of short decoherence and…

Quantum Physics · Physics 2022-04-27 Jiawen Jiang , Q. Chen

We consider the spin dynamics of a normal metal-ferromagnet heterostructure, with emphasis on spin-nutation terms arising from a dynamical Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction. We find that the spin-nutation term is anisotropic…

Mesoscale and Nanoscale Physics · Physics 2025-04-30 Christian Svingen Johnsen , Asle Sudbø