Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

International Journal of Modern Physics B

Manipulation of the topology and solid-state spin using a mechanic-based hybrid system

Wentao Huang, Dong‐Yan Lü, Xinke Li, Long Jin, Hong-Tao Ren, Yuan Zhou

Published Mar 10, 2022• 1 citation
Publisher

Abstract

In this paper, a three-body hybrid quantum system with the solid-state spin and topological qubit both mediated by a torsional nanomechanical resonator (NMR) is built by taking advantage of two different coupling mechanisms, the so-called strain and the magnetism, respectively. Two basic quantum manipulation (QM) schemes with respect to the quantum interface for arbitrary-state transfer and two-qubit Mølmer–Sørensen (MS) gate are also studied here. Then the efficiency for both QM processes is also systematically estimated, even under the influence of all kinds of adverse factors such as dissipation, decoherence and dephasing. This work may provide an extensible route towards a wider range of applications in quantum manipulation.

DOI
10.1142/s0217979222500667

Related papers

Strong coupling between a topological qubit and a nanomechanical resonator

Fang-Yu Hong, Huiqin Qian, Jing-Li Fu +2 more

We describe a scheme that enables a strong coherent coupling between a topological qubit and the quantized motion of a magnetized nanomechanical resonator. This coupling is achieved by attaching an array of magnetic tips to a namomechanical resonator under a quantum phase controller which coherently controls the energy gap of a topological qubit. Combined with single-qubit rotations the strong coupling enables arbitrary unitary transformations on the hybrid system of topological and mechanical qubits and may pave the way for the quantum information transfer between topological and optical qubits. Numerical simulations show that quantum-state transfer and entanglement distributing between the topological and mechanical qubits may be accomplished with high fidelity.

arXiv:1301.4987•Physical Review A•Mar 29, 2013•1 citation

Interfacing a Topological Qubit with a Spin Qubit in a Hybrid Quantum System

Bo Li, Fuli Li, Yuan Zhou +3 more

Research into hybrid quantum systems featuring both conventional and topological qubits is of keen interest for quantum information processing, and a key challenge is to realize a coherent interface between such qubits of different nature. The authors find that a topological qubit can be interfaced to a single nitrogen-vacancy center via a magnetized torsional cantilever. Topology-torsion couplings are induced by the magneto-Josephson effect, while spin-torsion couplings are realized by the exquisite preparation of dressed spin states. These coherent interactions can reach the strong-coupling regime, and enable a mechanically-dark-state protocol for quantum state conversion.

arXiv:1904.00383•Physical Review Applied•Apr 9, 2019•24 citations

Coupling a single NV center to a superconducting flux qubit via a nanomechanical resonator

Xinke Li, Sheng-li Ma, Ya-long Ren +2 more

We investigate the hybrid quantum system of a superconducting flux qubit, a single electronic spin associated with a negatively charged nitrogen vacancy (NV) center in diamond, and a high-quality magnetized nanomechanical resonator (NAMR). It is shown that the quantized motion of the NAMR can strongly couple to both the NV spin and the flux qubit. We estimate that the coupling strength of the NAMR to both the NV spin and the flux qubit can be about 2 π × 100 kHz, which is one order of magnitude larger than direct spin–qubit coupling. This enables the quantum state transfer to be faster and more robust against decoherence. The present work may provide an appealing way for quantum information processing based on hybrid solid-state quantum systems.

Journal of the Optical Society of America B•Nov 16, 2021•5 citations

Tripartite hybrid quantum systems: Skyrmion-mediated quantum interactions between single nitrogen-vacancy centers and superconducting qubits

Xue‐Feng Pan, Fuli Li

Nitrogen-vacancy (NV) centers in diamond and superconducting qubits are two promising solid-state quantum systems for quantum science and technology, but the realization of controlled interfaces between individual solid-state spins and superconducting qubits remains fundamentally challenging. Here, we propose and analyze a hybrid quantum system consisting of a magnetic skyrmion, an NV center, and a superconducting qubit, where the solid-state qubits are both positioned in proximity to the skyrmion structure in a thin magnetic disk. We show that it is experimentally feasible to achieve strong (coherent or dissipative) coupling between the NV center and the superconducting qubit by using the as an intermediary. This allows coherent information transfer and nonreciprocal responses between the NV center and the superconducting qubit at the single quantum level with high controllability. The proposed platform provides a scalable pathway for implementing quantum protocols that synergistically exploit the complementary advantages of spin-based quantum memories, microwave-frequency superconducting circuits, and topologically protected magnetic excitations.

arXiv:2505.00266•Physical Review Research•Nov 18, 2025•1 citation

Optomechanical-interface-induced strong spin-magnon coupling

Wei Xiong, Mingfeng Wang, Guo-Qiang Zhang +1 more

Strong long-distance spin-magnon coupling is essential for solid-state quantum information processing and single-qubit manipulation. Here, we propose an approach to realize strong spin-magnon coupling in a hybrid optomechanical cavity-spin-magnon system, where the optomechanical system, consisting of two cavities coupled to a common high-frequency mechanical resonator, acts as quantum interface. By eliminating the mechanical mode, position-position coupling and two-mode squeezing of two cavities are induced. In the squeezing representation, the spin-photon, magnon-photon, and photon-photon coupling strengths are exponentially amplified, thus lower- and upper-branch polaritons (LBP and UBP) are generated by strongly coupled squeezed modes of two cavities. Utilizing the critical property of the LBP, the coupling between the spin qubit (magnon) and LBP is greatly enhanced, while the coupling between the spin qubit (magnon) and UBP is fully suppressed. In the dispersive regime, strong and tunable spin-magnon coupling is induced by the virtual LBP, allowing quantum state exchange between them. Our proposal provides a promising platform to construct magnon-based hybrid systems and realize solid-state quantum information processing with optomechanical interfaces.

arXiv:2208.12988•Physical Review A•Mar 22, 2023•28 citations

High fidelity quantum state transfer in electromechanical systems with intermediate coupling

Jian Zhou, Yong Hu, Zhang-qi Yin +3 more

Hybrid quantum systems usually consist of two or more subsystems, which may take the advantages of the different systems. Recently, the hybrid system consisting of circuit electromechanical subsystems have attracted great attention due to its advanced fabrication and scalable integrated photonic circuit techniques. Here, we propose a scheme for high fidelity quantum state transfer between a superconducting qubit and a nitrogen-vacancy center in diamond, which are coupled to a superconducting transmission-line resonator with coupling strength g1 and a nanomechanical resonator with coupling strength g2, respectively. Meanwhile, the two resonators are parametrically coupled with coupling strength J. The system dynamics, including the decoherence effects, is numerical investigated. It is found that both the small (J<<{g1,g2}) and large (J>>{g1,g2}) coupling regimes of this hybrid system can not support high fidelity quantum state transfer before significant technique advances. However, in the intermediate coupling regime (J ~ g1 ~ g2), in contrast to a conventional wisdom, high fidelity quantum information transfer can be implemented, providing a promising route towards high fidelity quantum state transfer in similar coupled resonators systems.

arXiv:1408.7015•Scientific Reports•Aug 29, 2014•27 citations
In this paper, a three-body hybrid quantum system with the solid-state spin and topological qubit both mediated by a torsional nanomechanical resonator (NMR) is built by taking advantage of two different coupling mechanisms, the so-called strain and the magnetism, respectively. Two basic quantum manipulation (QM) schemes with respect to the quantum interface for arbitrary-state transfer and two-qubit Mølmer–Sørensen (MS) gate are also studied here. Then the efficiency for both QM processes is also systematically estimated, even under the influence of all kinds of adverse factors such as dissipation, decoherence and dephasing. This work may provide an extensible route towards a wider range of applications in quantum manipulation.
We describe a scheme that enables a strong coherent coupling between a topological qubit and the quantized motion of a magnetized nanomechanical resonator. This coupling is achieved by attaching an array of magnetic tips to a namomechanical resonator under a quantum phase controller which coherently controls the energy gap of a topological qubit. Combined with single-qubit rotations the strong coupling enables arbitrary unitary transformations on the hybrid system of topological and mechanical qubits and may pave the way for the quantum information transfer between topological and optical qubits. Numerical simulations show that quantum-state transfer and entanglement distributing between the topological and mechanical qubits may be accomplished with high fidelity.
Research into hybrid quantum systems featuring both conventional and topological qubits is of keen interest for quantum information processing, and a key challenge is to realize a coherent interface between such qubits of different nature. The authors find that a topological qubit can be interfaced to a single nitrogen-vacancy center via a magnetized torsional cantilever. Topology-torsion couplings are induced by the magneto-Josephson effect, while spin-torsion couplings are realized by the exquisite preparation of dressed spin states. These coherent interactions can reach the strong-coupling regime, and enable a mechanically-dark-state protocol for quantum state conversion.
We investigate the hybrid quantum system of a superconducting flux qubit, a single electronic spin associated with a negatively charged nitrogen vacancy (NV) center in diamond, and a high-quality magnetized nanomechanical resonator (NAMR). It is shown that the quantized motion of the NAMR can strongly couple to both the NV spin and the flux qubit. We estimate that the coupling strength of the NAMR to both the NV spin and the flux qubit can be about 2 π × 100 kHz, which is one order of magnitude larger than direct spin–qubit coupling. This enables the quantum state transfer to be faster and more robust against decoherence. The present work may provide an appealing way for quantum information processing based on hybrid solid-state quantum systems.
Nitrogen-vacancy (NV) centers in diamond and superconducting qubits are two promising solid-state quantum systems for quantum science and technology, but the realization of controlled interfaces between individual solid-state spins and superconducting qubits remains fundamentally challenging. Here, we propose and analyze a hybrid quantum system consisting of a magnetic skyrmion, an NV center, and a superconducting qubit, where the solid-state qubits are both positioned in proximity to the skyrmion structure in a thin magnetic disk. We show that it is experimentally feasible to achieve strong (coherent or dissipative) coupling between the NV center and the superconducting qubit by using the as an intermediary. This allows coherent information transfer and nonreciprocal responses between the NV center and the superconducting qubit at the single quantum level with high controllability. The proposed platform provides a scalable pathway for implementing quantum protocols that synergistically exploit the complementary advantages of spin-based quantum memories, microwave-frequency superconducting circuits, and topologically protected magnetic excitations.
Strong long-distance spin-magnon coupling is essential for solid-state quantum information processing and single-qubit manipulation. Here, we propose an approach to realize strong spin-magnon coupling in a hybrid optomechanical cavity-spin-magnon system, where the optomechanical system, consisting of two cavities coupled to a common high-frequency mechanical resonator, acts as quantum interface. By eliminating the mechanical mode, position-position coupling and two-mode squeezing of two cavities are induced. In the squeezing representation, the spin-photon, magnon-photon, and photon-photon coupling strengths are exponentially amplified, thus lower- and upper-branch polaritons (LBP and UBP) are generated by strongly coupled squeezed modes of two cavities. Utilizing the critical property of the LBP, the coupling between the spin qubit (magnon) and LBP is greatly enhanced, while the coupling between the spin qubit (magnon) and UBP is fully suppressed. In the dispersive regime, strong and tunable spin-magnon coupling is induced by the virtual LBP, allowing quantum state exchange between them. Our proposal provides a promising platform to construct magnon-based hybrid systems and realize solid-state quantum information processing with optomechanical interfaces.
Hybrid quantum systems usually consist of two or more subsystems, which may take the advantages of the different systems. Recently, the hybrid system consisting of circuit electromechanical subsystems have attracted great attention due to its advanced fabrication and scalable integrated photonic circuit techniques. Here, we propose a scheme for high fidelity quantum state transfer between a superconducting qubit and a nitrogen-vacancy center in diamond, which are coupled to a superconducting transmission-line resonator with coupling strength g1 and a nanomechanical resonator with coupling strength g2, respectively. Meanwhile, the two resonators are parametrically coupled with coupling strength J. The system dynamics, including the decoherence effects, is numerical investigated. It is found that both the small (J<<{g1,g2}) and large (J>>{g1,g2}) coupling regimes of this hybrid system can not support high fidelity quantum state transfer before significant technique advances. However, in the intermediate coupling regime (J ~ g1 ~ g2), in contrast to a conventional wisdom, high fidelity quantum information transfer can be implemented, providing a promising route towards high fidelity quantum state transfer in similar coupled resonators systems.