102 citations · 229 across the 17 of their papers we have counts for
17 papers
Quantum magnonics with engineered dissipative and coherent interactions
Debsuvra Mukhopadhyay, Jayakrishnan M. P. Nair, Girish S. Agarwal
Cavity magnonics is moving beyond the conventional paradigm of coherent spin--photon hybridization toward the controlled engineering of dissipative and coherent interactions, Floqu…
Asymmetric Floquet-Engineered Mode Coupling in Hybrid Magnonics
Amin Pishehvar, Jayakrishnan M. P. Nair, Zixin Yan +3
In hybrid magnonic systems, linear magnon--photon hybridization inherently produces symmetric, reciprocal interactions, precluding asymmetric mode coupling. Floquet driving can tai…
Experimental Realization of Synthetic Magnonic Lattice via Floquet Engineering
Amin Pishehvar, Jayakrishnan M. P. Nair, Zhaoyou Wang +5
Magnonic systems, which exploit spin-wave excitations in magnetic materials, offer a promising platform for coherent information processing due to their low dissipation, strong non…
Observation and Control of Spontaneous Magnon Emission from Spin Ensembles in 2D Hexagonal Boron Nitride
Ling-Jie Zhou, Jayakrishnan M. P. Nair, Senlei Li +10
Hybrid systems consisting of color centers and magnetic materials provide an appealing solid-state platform for advancing the burgeoning quantum technological revolution. Exploring…
Generating single- and many-body quantum magnonic states
Violet Williams, Jayakrishnan M. P. Nair, Yaroslav Tserkovnyak +1
The growing interest in quantum magnonics is driving the development of advanced techniques for generating, controlling, and detecting non-classical magnonic states. Here, we explo…
Engineering long-lived entanglement through dissipation in quantum hybrid solid-state platforms
Jayakrishnan M. P. Nair, Benedetta Flebus
Spin squeezing, a form of many-body entanglement, is a crucial resource in quantum metrology and information processing. While experimentally viable protocols for generating stable…
The role of excitation vector fields and all-polarisation state control of cavity magnonics
Alban Joseph, Jayakrishnan M. P. Nair, Mawgan A. Smith +8
Recently the field of cavity magnonics, a field focused on controlling the interaction between magnons and confined microwave photons within microwave resonators, has drawn signifi…
Magnon-Photon Coupling in an Opto-Electro-Magnonic Oscillator
Yuzan Xiong, Jayakrishnan M. P. Nair, Andrew Christy +5
The opto-electronic oscillators (OEOs) hosting self-sustained oscillations by a time delayed mechanism are of particular interest in long-haul signal transmission and processing. O…
Topological transitions in dissipatively coupled Su-Schrieffer-Heeger models
Jayakrishnan M. P. Nair, Marlan O. Scully, Girish S. Agarwal
Non-Hermitian topological phenomena have gained much interest among physicists in recent years. In this paper, we expound on the physics of dissipatively coupled Su-Schrieffer-Heeg…
Engineering bound states in continuum via nonlinearity induced extra dimension
Qingtian Miao, Jayakrishnan M. P. Nair, Girish S. Agarwal
Bound states in continuum (BICs) are localized states of a system possessing significantly large life times with applications across various branches of science. In this work, we p…
Nonlinear construction of topological SSH models
Jayakrishnan M. P. Nair
The Su-Schrieffer-Heeger (SSH) model describes a paradigmatic one-dimensional (1-D) system that exhibits a non-trivial band topology. In this paper, we foreground a new scheme invo…
Quantum amplification of spin currents in cavity magnonics by a parametric drive induced long-lived mode
Debsuvra Mukhopadhyay, Jayakrishnan M. P. Nair, G. S. Agarwal
Cavity-mediated magnon-magnon coupling can lead to a transfer of spin-wave excitations between two spatially separated magnetic samples. We enunciate how the application of a two-p…
Cavity mediated level attraction and repulsion between magnons
Jayakrishnan M. P. Nair, Debsuvra Mukhopadhyay, Girish S. Agarwal
We characterize some of the distinctive hallmarks of magnon-magnon interaction mediated by the intracavity field of a microwave cavity, along with their testable ramifications. In…
Anti-PT-symmetry-enhanced interconversion between microwave and optical fields
Debsuvra Mukhopadhyay, Jayakrishnan M. P. Nair, Girish S. Agarwal
The intrinsic dissipation of systems into a shared reservoir introduces coherence between two systems, enabling anti-Parity-Time (anti-PT) symmetry. In this paper, we propose an an…
Ultralow threshold bistability and generation of long-lived mode in a dissipatively coupled nonlinear system: application to magnonics
Jayakrishnan M. P. Nair, Debsuvra Mukhopadhyay, Girish S. Agarwal
The prospect of a system possessing two or more stable states for a given excitation condition is of topical interest with applications in information processing networks. In this…
Enhanced sensing of weak anharmonicities through coherences in dissipatively coupled anti-PT symmetric systems
Jayakrishnan M. P. Nair, Debsuvra Mukhopadhyay, G. S. Agarwal
In the last few years, the great utility of PT-symmetric systems in sensing small perturbations has been recognized. Here, we propose an alternate method relevant to dissipative sy…
Nonlinear Spin Currents
Jayakrishnan M. P. Nair, Zhedong Zhang, Marlan O. Scully +1
The cavity mediated spin current between two ferrite samples has been reported by Bai et. al. [Phys. Rev. Lett. 118, 217201 (2017)]. This experiment was done in the linear regime o…