Controlled Nonreciprocal Magnon and Photon Blockade Using Barnett Effects in a Spinning Microwave Magnomechanical System Mohamed Amazioug, S. Abdel‐Khalek, Muhammad Asjad Annalen Der Physik, 2025 Unconventional magnon and photon blockade have attracted significant research interest for their ability to generate single‐particle sources in hybrid quantum systems, particularly in cavity magnonics. In this work, a scheme is presented to investigate the effect of Barnett effects in the nonreciprocal blocked of magnons and photons within a spinning microwave magnomechanical system with a squeezed input drive of the magnonic mode. The effects of thermal noise, the amplitude of a probe field, and the magnetic‐dipole coupling strength are realized using the weak‐coupling regime. Using the Mandel parameter, the nonclassicality of the system is discussed. Additionally, the time evolution of the second‐order correlation function is examined.
Entanglement between surface-plasmon-polariton modes and its application to long-distance quantum communication Jia-Xin Peng, Baiqiang Zhu, Muhammad Asjad Physical Review A, 2025 We propose a scheme for achieving quantum entanglement between surface-plasmon-polariton (SPP) modes in a hybrid plasmonic-graphene waveguide system. We then demonstrate that the entanglement of two SPP modes can serve as a useful resource for quantum communication of continuous-variable light signals over a long distance, mediated by concatenated swap operations. The teleportation fidelity of an unknown coherent state has strong robustness to loss and imperfect detection at relatively strong effective optical-microwave coupling. Our study opens the way for continuous-variable quantum communication and quantum information based on hybrid plasmonic-graphene systems.
If dark matter with milli-charge bonded to ordinary matter existed, quantum effects should be observed Muhammad Asjad, Paolo Tombesi New Journal of Physics, 2025 We propose a quantum optomechanical method to probe the potential existence of dark matter particles possessing an infinitesimal electric charge, known as milli-charged particles (mCPs), when bound to ordinary matter. In our setup, a charged fused silica nanosphere (NS) is optically levitated within a Fabry–Perot cavity and subjected to an additional electrostatic field produced by a charged metallic ring. If mCPs exist and are embedded in the NS as relics of early Universe matter, their presence would generate a tiny but measurable deviation from a purely thermal output spectrum. Specifically, the output light from the cavity would exhibit quadrature squeezing even at room temperature, and the NS center-of-mass motion could become entangled with the optical field. These quantum effects are absent when there are no residual infinitesimal charges in the NS. We provide a theoretical framework for this proposal, including the system Hamiltonian and linearized quantum Langevin dynamics, and show how measurements of squeezing and entanglement in the cavity output can reveal the presence of bound mCPs.
Entanglement and quantum coherence of two YIG spheres in a hybrid Laguerre–Gaussian cavity optomechanics Abdelkader Hidki, Jia-Xin Peng, S. K. Singh, M. Khalid, M. Asjad Scientific Reports, 2024 We theoretically investigate continuous variable entanglement and macroscopic quantum coherence in the hybrid L–G rotational cavity optomechanical system containing two YIG spheres. In this system, a single L–G cavity mode and both magnon modes (which are due to the collective excitation of spins in two YIG spheres) are coupled through the magnetic dipole interaction whereas the L–G cavity mode can also exchange orbital angular momentum (OAM) with the rotating mirror (RM). We study in detail the effects of various physical parameters like cavity and both magnon detunings, environment temperature, optorotational and magnon coupling strengths on the bipartite entanglement and the macroscopic quantum coherence as well. We also explore parameter regimes to achieve maximum values for both of these quantum correlations. We also observed that the parameters regime for achieving maximum bipartite entanglement is completely different from macroscopic quantum coherence. So, our present study shall provide a method to control various nonclassical quantum correlations of macroscopic objects in the hybrid L–G rotational cavity optomechanical system and have potential applications in quantum sensing, quantum meteorology, and quantum information science.
Optomechanical cooling with simultaneous intracavity and extracavity squeezed light S. S. Zheng, F. X. Sun, M. Asjad, G. W. Zhang, J. Huo, J. Li, J. Zhou, Z. Ma, Q. Y. He Physical Review A, 2024 We propose an alternative experimentally feasible approach to achieve high-efficiency ground-state cooling of a mechanical oscillator in an optomechanical system under the deeply unresolved sideband condition with the assistance of both intracavity and extracavity squeezing. In the scheme, a degenerate optical parametric amplifier is placed inside the optical cavity, generating the intracavity squeezing; in addition, the optical cavity is driven by the extracavity squeezed light, namely the extracavity squeezing. The quantum interference effect generated by intracavity squeezing and extracavity squeezing can completely suppress the nonresonant Stokes heating process while greatly enhancing the anti-Stokes cooling process. Therefore, the joint-squeezing scheme is capable of cooling the mechanical oscillators to their quantum ground state in a regime far away from the resolved sideband condition. Compared with other traditional optomechanical cooling schemes, the single-photon cooling rate in this joint-squeezing scheme can be tremendously enlarged by nearly three orders of magnitude. At the same time, the coupling strength required to achieve ground-state cooling can be significantly reduced. This scheme is promising for cooling large-mass and low-frequency mechanical oscillators, which provides a prerequisite for preparing and manipulating nonclassical states in macroscopic quantum systems and lays a significant foundation for quantum manipulation.
Enhancement of quantum effects via periodic modulation in a cavity magnomechanical system Rong Li, Jia-Xin Peng, Xun-Li Feng, Muhammad Asjad Physical Review Applied, 2024 The cavity magnomechanical (CMM) system offers a new platform for studying macroscopic quantum effects. In previous studies of CMM systems, quantum effects have mainly been studied in the resolved-sideband regime, which presents challenges for experimental implementation. Here, we propose a scheme to enhance quantum effects in the CMM system by applying a Floquet field to periodically modulate the magnon mode. To verify the effectiveness of the scheme, we examine several key phenomena, including quantum entanglement, mechanical squeezing, and ground-state cooling of the mechanical mode. More importantly, with the assistance of periodic modulation, these phenomena can be observed in the unresolved-sideband regime. This relaxes the requirements for the implementation of quantum effects in experimental CMM systems. Our proposed periodic modulation mechanism for CMM systems is quite general and can also be applied to enhance and generate other quantum effects in the unresolved-sideband regime.
Controlled nonreciprocal magnon and photon blockade using barnett effects in a spinning microwave magnomechanical system M Amazioug, S Abdel‐Khalek, M Asjad Annalen der Physik 537 (12), e00289 , 2025 2025 Citations: 5
Entanglement between surface-plasmon-polariton modes and its application to long-distance quantum communication JX Peng, B Zhu, M Asjad Physical Review A 112 (4), 042606 , 2025 2025 Citations: 3
Quantum sensing enhanced via periodic modulation JX Peng, M Asjad Physical Review Applied 24 (3), 034042 , 2025 2025 Citations: 1
If dark matter with milli-charge bonded to ordinary matter existed, quantum effects should be observed M Asjad, P Tombesi New Journal of Physics 27 (7), 074508 , 2025 2025 Citations: 1
Macroscopic Quantum Coherence and Quantum Complete Synchronization in Molecular Optomechanical System JX Peng, C Zhao, P Djorwe, KB Emale, ZW Yu, M Asjad Chaos, Solitons & Fractals 197, 116473 , 2025 2025 Citations: 8
Driven Magnon-Photon System as a Tunable Quantum Heat Rectifier CO Edet, K Słowik, N Ali, M Asjad, O Abah arXiv preprint arXiv:2503.06301 , 2025 2025
Emergence and enhancement of feedback control-induced quantum entanglement M Amazioug, JX Peng, D Dutykh, M Asjad The European Physical Journal Plus 140 (2), 1-9 , 2025 2025 Citations: 21
Optomechanical cooling with simultaneous intracavity and extracavity squeezed light SS Zheng, FX Sun, M Asjad, GW Zhang, J Huo, J Li, J Zhou, Z Ma, QY He Physical Review A 110 (6), 063520 , 2024 2024 Citations: 5
Entropy production rate and correlations of cavity magnomechanical system CO Edet, M Asjad, D Dutykh, N Ali, O Abah Physical Review Research 6 (3), 033037 , 2024 2024 Citations: 19
Parametrically enhancing sensor sensitivity at an exceptional point P Djorwé, M Asjad, Y Pennec, D Dutykh, B Djafari-Rouhani Physical Review Research 6 (3), 033284 , 2024 2024 Citations: 33
Compasslike states in a thermal reservoir and fragility of their nonclassical features N Akhtar, X Yang, M Asjad, JX Peng, G Xianlong, Y Chen Physical Review A 109 (5), 053718 , 2024 2024 Citations: 9
Entanglement and quantum coherence of two YIG spheres in a hybrid Laguerre–Gaussian cavity optomechanics A Hidki, JX Peng, SK Singh, M Khalid, M Asjad Scientific Reports 14 (1), 11204 , 2024 2024 Citations: 34
Auxiliary-cavity-enhanced quantum estimation of optorotational-coupling strength JX Peng, ZX Liu, M Asjad, N Akhtar Optics Letters 49 (9), 2249-2252 , 2024 2024 Citations: 8
Enhancement of quantum effects via periodic modulation in a cavity magnomechanical system R Li, JX Peng, XL Feng, M Asjad Physical Review Applied 22 (4), 044081 , 2024 2024 Citations: 6
Vector photon-magnon-phonon coherence in a polarized microwave driven cavity magnomechanical system JX Peng, A Kundu, ZX Liu, A Rahman, N Akhtar, M Asjad Physical Review B 109 (6), 064412 , 2024 2024 Citations: 19
Quantum teleportation network using a system of electronically enabled graphene waveguides MYA Qasymeh, H El Euch, M Asjad US Patent 12,149,292 , 2024 2024
QUANTUM TELEPORTATION NETWORK SYSTEM USING ELECTRONICALLY DRIVEN GRAPHENE WAVEGUIDES MYA Qasymeh, H El Euch, M Asjad US Patent App. 18/950,916 , 2024 2024
Nonlinear optovibronics in molecular systems Q Zhang, M Asjad, M Reitz, C Sommer, B Gurlek, C Genes Physical Review A 109 (2), 023714 , 2024 2024 Citations: 1
Achieving Strong Magnon Blockade through Magnon Squeezing in a Cavity Magnetomechanical System M Amazioug, D Dutykh, B Teklu, M Asjad Annalen der Physik 536 (4), 2300357 , 2023 2023 Citations: 41
Irreversibility in an optical parametric driven optomechanical system O Abah, CO Edet, N Ali, B Teklu, M Asjad Annalen der Physik 536 (3), 2300400 , 2023 2023 Citations: 2
MOST CITED SCHOLAR PUBLICATIONS
Stabilized entanglement of massive mechanical oscillators CF Ockeloen-Korppi, E Damskägg, JM Pirkkalainen, M Asjad, AA Clerk, ... Nature 556 (7702), 478-482 , 2018 2018 Citations: 719
Robust stationary mechanical squeezing in a kicked quadratic optomechanical system M Asjad, GS Agarwal, MS Kim, P Tombesi, GD Giuseppe, D Vitali Physical Review A 89 (2), 023849 , 2014 2014 Citations: 152
Magnon squeezing enhanced ground-state cooling in cavity magnomechanics M Asjad, J Li, SY Zhu, JQ You Fundamental Research 3 (1), 3 , 2023 2023 Citations: 92
Enhancement of magnon-photon-phonon entanglement in a cavity magnomechanics with coherent feedback loop M Amazioug, B Teklu, M Asjad Scientific Reports 13 (1), 3833 , 2023 2023 Citations: 80
Entanglement and coherence in a hybrid Laguerre–Gaussian rotating cavity optomechanical system with two-level atoms SK Singh, JX Peng, M Asjad, M Mazaheri Journal of Physics B: Atomic, Molecular and Optical Physics 54 (21), 215502 , 2021 2021 Citations: 76
Optomechanical cooling with intracavity squeezed light M Asjad, N Etehadi Abari, S Zippilli, D Vitali Optics express 27 (22), 32427-32444 , 2019 2019 Citations: 67
Feedback control of two-mode output entanglement and steering in cavity optomechanics M Asjad, P Tombesi, D Vitali Physical Review A 94 (5), 052312 , 2016 2016 Citations: 59
Mechanical Einstein-Podolsky-Rosen entanglement with a finite-bandwidth squeezed reservoir M Asjad, S Zippilli, D Vitali Physical Review A 93 (6), 062307 , 2016 2016 Citations: 56
Tunable optical response in a hybrid quadratic optomechanical system coupled with single semiconductor quantum well SK Singh, M Asjad, CHR Ooi Quantum Information Processing 21, 47 , 2022 2022 Citations: 55
Feedback control of quantum correlations in a cavity magnomechanical system with magnon squeezing M Amazioug, S Singh, B Teklu, M Asjad Entropy 25 (10), 1462 , 2023 2023 Citations: 54
Suppression of Stokes scattering and improved optomechanical cooling with squeezed light M Asjad, S Zippilli, D Vitali Physical Review A 94 (5), 051801 , 2016 2016 Citations: 52
Steady-state entanglement of a Bose-Einstein condensate and a nanomechanical resonator M Asjad, F Saif Physical Review A 84 (3), 033606 , 2011 2011 Citations: 46
Reservoir engineering of a mechanical resonator: generating a macroscopic superposition state and monitoring its decoherence M Asjad, D Vitali Journal of Physics B: Atomic, Molecular and Optical Physics 47 (4), 045502 , 2014 2014 Citations: 45
Achieving Strong Magnon Blockade through Magnon Squeezing in a Cavity Magnetomechanical System M Amazioug, D Dutykh, B Teklu, M Asjad Annalen der Physik 536 (4), 2300357 , 2023 2023 Citations: 41
Strong photon antibunching effect in a double cavity optomechanical system with intracavity squeezed light M Amazioug, M Daoud, SK Singh, M Asjad Quantum Information Processing 22, 301 , 2023 2023 Citations: 41
Tunable optical response and fast (slow) light in optomechanical system with phonon pump SK Singh, M Parvez, T Abbas, JX Peng, M Mazaheri, M Asjad Physics Letters A 442, 128181 , 2022 2022 Citations: 41
Joint quantum estimation of loss and nonlinearity in driven-dissipative Kerr resonators M Asjad, B Teklu, MGA Paris Physical Review Research 5 (1), 013185 , 2023 2023 Citations: 40
Enhanced weak force sensing based on atom-based coherent quantum noise cancellation in a hybrid cavity optomechanical system SK Singh, M Mazaheri, JX Peng, A Sohail, M Khalid, M Asjad Frontiers in Physics 11, 245 , 2022 2022 Citations: 40
Normal mode splitting and optical squeezing in a linear and quadratic optomechanical system with optical parametric amplifier SK Singh, M Mazaheri, JX Peng, A Sohail, Z Gu, M Asjad Quantum Information Processing 22, 198 , 2022 2022 Citations: 39
Magneto-transport and thermal properties of the Yukawa potential in cosmic string space-time CO Edet, PO Nwbabuzor, EB Ettah, CA Duque, N Ali, AN Ikot, S Mahmoud, ... Results in Physics 39, 105749 , 2022 2022 Citations: 38
