Related papers: Scalable universal quantum gates between nitrogen-vacancy centers in levitated nanodiamonds arrays

Scalable universal quantum gates between nitrogen-vacancy centers in levitated nanodiamonds arrays

URL: http://arxiv.org/abs/2504.08194v1
Date: Fri, 11 Apr 2025 01:40:13 GMT
Title: Scalable universal quantum gates between nitrogen-vacancy centers in levitated nanodiamonds arrays
Authors: Guangyu Zhang, Huaijin Zhang, Zhang-qi Yin,
Abstract summary: Nitrogen-vacancy (NV) centers in nanodiamond offer a promising platform for quantum information processing.<n>We propose a scalable architecture utilizing optically levitated nanodiamond arrays.<n>We achieve a light-induced coupling strength exceeding 119 kHz between torsional modes of the distant levitated nanodiamonds.
Score: 0.8315801422499863
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Nitrogen-vacancy (NV) centers in nanodiamond offer a promising platform for quantum information processing due to their room-temperature spin coherence and optical addressability. However, scalable quantum processors remain limited by the challenge of achieving strong, controllable interactions between distant NV spins. Here, we propose a scalable architecture utilizing optically levitated nanodiamond arrays, where torsional vibrations mediate the coherent coupling between the embedded NV centers. By optimizing the shape of ellipsoidal nanoparticles, we achieve a light-induced coupling strength exceeding 119 kHz between torsional modes of the distant levitated nanodiamonds, which are two orders of magnitude larger than the typical decoherence rates in this system. This strong interaction, combined with magnetic field-enabled spin-torsion coupling, establishes an effective interaction between the spatially separated NV centers in the distant nanodiamonds. Numerical simulations confirm that dynamic decoupling can suppress both thermal noise and spin dephasing, enabling two-qubit gates with fidelity exceeding 99\%. This work provides a foundation for reconfigurable quantum hybrid systems, with potential applications in rotational sensing and programmable quantum processing.

Related papers

Multi-qubit nanoscale sensing with entanglement as a resource [0.18620245012314962]
We describe protocols to use optically unresolved NV center pairs and nuclear spins as multi-qubit sensors for correlated measuring noise. For length scales around 10 nm, we create maximally entangled Bell states through dipole-di coupling two NV centers. This changes the scaling sensitivity with readout noise from quadratic to linear.
arXiv Detail & Related papers (2025-04-16T23:52:27Z)
Methods for transverse and longitudinal spin-photon coupling in silicon quantum dots with intrinsic spin-orbit effect [0.32301042014102566]
This paper examines the theory of both transverse and longitudinal spin-photon coupling. We propose a method of coupling which uses the intrinsic spin-orbit interaction arising from orbital degeneracies in SiMOS qubits. We also evaluate the feasibility of a longitudinal coupling driven by an AC modulation on the qubit.
arXiv Detail & Related papers (2023-08-24T08:04:28Z)
Control of an environmental spin defect beyond the coherence limit of a central spin [79.16635054977068]
We present a scalable approach to increase the size of electronic-spin registers. We experimentally realize this approach to demonstrate the detection and coherent control of an unknown electronic spin outside the coherence limit of a central NV. Our work paves the way for engineering larger quantum spin registers with the potential to advance nanoscale sensing, enable correlated noise spectroscopy for error correction, and facilitate the realization of spin-chain quantum wires for quantum communication.
arXiv Detail & Related papers (2023-06-29T17:55:16Z)
Room Temperature Fiber-Coupled single-photon devices based on Colloidal Quantum Dots and SiV centers in Back Excited Nanoantennas [91.6474995587871]
Directionality is achieved with a hybrid metal-dielectric bullseye antenna. Back-excitation is permitted by placement of the emitter at or in a sub-wavelength hole positioned at the bullseye center.
arXiv Detail & Related papers (2023-03-19T14:54:56Z)
All-Optical Nuclear Quantum Sensing using Nitrogen-Vacancy Centers in Diamond [52.77024349608834]
Microwave or radio-frequency driving poses a significant limitation for miniaturization, energy-efficiency and non-invasiveness of quantum sensors. We overcome this limitation by demonstrating a purely optical approach to coherent quantum sensing. Our results pave the way for highly compact quantum sensors to be employed for magnetometry or gyroscopy applications.
arXiv Detail & Related papers (2022-12-14T08:34:11Z)
Tunable photon-mediated interactions between spin-1 systems [68.8204255655161]
We show how to harness multi-level emitters with several optical transitions to engineer photon-mediated interactions between effective spin-1 systems. Our results expand the quantum simulation toolbox available in cavity QED and quantum nanophotonic setups.
arXiv Detail & Related papers (2022-06-03T14:52:34Z)
Ideal refocusing of an optically active spin qubit under strong hyperfine interactions [0.48730499243678804]
We show that eliminating strain inhomogeneity using lattice-matched GaAs-AlGaAs quantum dot devices prolongs the electron spin coherence by nearly two orders of magnitude. Our findings constitute the basis for highly coherent spin-photon interfaces.
arXiv Detail & Related papers (2022-06-02T18:00:26Z)
Tuning long-range fermion-mediated interactions in cold-atom quantum simulators [68.8204255655161]
Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior. Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
arXiv Detail & Related papers (2022-03-31T13:32:12Z)
Multidimensional cluster states using a single spin-photon interface coupled strongly to an intrinsic nuclear register [48.7576911714538]
Photonic cluster states are a powerful resource for measurement-based quantum computing and loss-tolerant quantum communication. We propose the generation of multi-dimensional lattice cluster states using a single, efficient spin-photon interface coupled strongly to a nuclear register.
arXiv Detail & Related papers (2021-04-26T14:41:01Z)
Electrical Control of Coherent Spin Rotation of a Single-Spin Qubit [0.0]
Nitrogen vacancy (NV) centers, optically-active atomic defects in diamond, have attracted tremendous interest for quantum sensing, network, and computing applications. Here, we report electrical control of the coherent spin rotation rate of a single-spin qubit in NV-magnet based hybrid quantum systems.
arXiv Detail & Related papers (2020-07-15T08:39:37Z)

This list is automatically generated from the titles and abstracts of the papers in this site.