Indirect Control of the $\rm {}^{29}SiV^{-}$ Nuclear Spin in Diamond

• URL: http://arxiv.org/abs/2203.10283v2
• Date: Fri, 13 May 2022 02:02:26 GMT
• Title: Indirect Control of the $\rm {}^{29}SiV^{-}$ Nuclear Spin in Diamond
• Authors: Hyma H. Vallabhapurapu, Chris Adambukulam, Andre Saraiva, Arne Laucht
• Abstract summary: Coherent control and optical readout of the electron spin of the $29$SiV$-$ center in diamond has been demonstrated. Nuclear spins may be even better suited for many applications in quantum information processing due to their long coherence times.
• Score: 0.8793721044482612
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Coherent control and optical readout of the electron spin of the $^{29}$SiV$^{-}$ center in diamond has been demonstrated in literature, with exciting prospects for implementations as memory nodes and spin qubits. Nuclear spins may be even better suited for many applications in quantum information processing due to their long coherence times. Control of the $^{29}$SiV$^{-}$ nuclear spin using conventional NMR techniques is feasible, albeit at slow kilohertz rates due to the nuclear spin's low gyromagnetic ratio. In this work we theoretically demonstrate how indirect control using the electron spin-orbit effect can be employed for high-speed, megahertz control of the $^{29}$Si nuclear spin. We discuss the impact of the nuclear spin precession frequency on gate times and the exciting possibility of all optical nuclear spin control.

Related papers

• Control of solid-state nuclear spin qubits using an electron spin-1/2 [0.0]
  We show improved control of single nuclear spins by an electron spin-1/2 using Dynamically Decoupled Radio Frequency gates. Our work provides key insights into the challenges and opportunities for nuclear spin control in electron spin-1/2 systems.
  arXiv  Detail & Related papers  (2024-09-13T16:51:16Z)
• Measuring nuclear spin qubits by qudit-enhanced spectroscopy in Silicon Carbide [0.0]
  Nuclear spins with hyperfine coupling to single electron spins are highly valuable quantum bits. In this work we probe and characterise the particularly rich nuclear spin environment around single silicon vacancy color-centers (V2) in 4H-SiC.
  arXiv  Detail & Related papers  (2023-10-24T06:59:39Z)
• Robust Nuclear Spin Polarization via Ground-State Level Anti-Crossing of Boron Vacancy Defects in Hexagonal Boron Nitride [6.181926071859319]
  Nuclear spin polarization plays a crucial role in quantum information processing and quantum sensing. We show that GSLAC-assisted nuclear polarization can be achieved with significantly lower laser power than excited-state level anti-crossing.
  arXiv  Detail & Related papers  (2023-06-28T06:48:42Z)
• Spin-orbit torque on nuclear spins exerted by a spin accumulation via hyperfine interactions [49.1574468325115]
  This article demonstrates that the hyperfine coupling, which consists of Fermi contact and dipolar interactions, can mediate the application of spin-orbit torques acting on nuclear spins. The reactions to the equilibrium and nonequilibrium components of the spin density is a torque on the nucleus with field-like and damping-like components. This nuclear spin-orbit torque is a step toward stabilizing and controlling nuclear magnetic momenta, in magnitude and direction, and realizing nuclear spintronics.
  arXiv  Detail & Related papers  (2023-05-21T08:05:23Z)
• Computational Insights into Electronic Excitations, Spin-Orbit Coupling Effects, and Spin Decoherence in Cr(IV)-based Molecular Qubits [63.18666008322476]
  We provide insights into key properties of Cr(IV)-based molecules aimed at assisting chemical design of efficient molecular qubits. We find that the sign of the uniaxial zero-field splitting (ZFS) parameter is negative for all considered molecules. We quantify (super)hyperfine coupling to the $53$Cr nuclear spin and to the $13C and $1H nuclear spins.
  arXiv  Detail & Related papers  (2022-05-01T01:23:10Z)
• Tunable Gyromagnetic Augmentation of Nuclear Spins in Diamond [0.0]
  This work identifies regimes in which we are able to implement fast quantum control of dark nuclear spins. It lays the foundations for further inquiry into rapid control of long-lived spin qubits at room temperature.
  arXiv  Detail & Related papers  (2021-09-28T06:14:51Z)
• Quantum control of nuclear spin qubits in a rapidly rotating diamond [62.997667081978825]
  Nuclear spins in certain solids couple weakly to their environment, making them attractive candidates for quantum information processing and inertial sensing. We demonstrate optical nuclear spin polarization and rapid quantum control of nuclear spins in a diamond physically rotating at $1,$kHz, faster than the nuclear spin coherence time. Our work liberates a previously inaccessible degree of freedom of the NV nuclear spin, unlocking new approaches to quantum control and rotation sensing.
  arXiv  Detail & Related papers  (2021-07-27T03:39:36Z)
• Electrically tuned hyperfine spectrum in neutral Tb(II)(Cp$^{\rm{iPr5}}$)$_2$ single-molecule magnet [64.10537606150362]
  Both molecular electronic and nuclear spin levels can be used as qubits. In solid state systems with dopants, an electric field was shown to effectively change the spacing between the nuclear spin qubit levels. This hyperfine Stark effect may be useful for applications of molecular nuclear spins for quantum computing.
  arXiv  Detail & Related papers  (2020-07-31T01:48:57Z)
• Entanglement and control of single quantum memories in isotopically engineered silicon carbide [89.42372489576658]
  Nuclear spins in the solid state are both a cause of decoherence and a valuable resource for spin qubits. We demonstrate control of isolated 29Si nuclear spins in silicon carbide (SiC) to create an entangled state between an optically active divacancy spin and a strongly coupled nuclear register.
  arXiv  Detail & Related papers  (2020-05-15T15:45:34Z)
• Hyperfine and quadrupole interactions for Dy isotopes in DyPc$_2$ molecules [77.57930329012771]
  Nuclear spin levels play an important role in understanding magnetization dynamics and implementation and control of quantum bits in lanthanide-based single-molecule magnets. We investigate the hyperfine and nuclear quadrupole interactions for $161$Dy and $163$Dy nucleus in anionic DyPc$.
  arXiv  Detail & Related papers  (2020-02-12T18:25:31Z)

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

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.