Electric dipole spin resonance with linear and cubic spin-orbit interaction

• URL: http://arxiv.org/abs/2407.20632v1
• Date: Tue, 30 Jul 2024 08:20:03 GMT
• Title: Electric dipole spin resonance with linear and cubic spin-orbit interaction
• Authors: Yasuhiro Tokura,
• Abstract summary: We consider the electric dipole spin resonance (EDSR) with using the spin-orbit interaction (SOI) in GaAs and Ge based quantum dots formed in a quantum well. We find that the cubic SOI makes the Rabi frequency non-linear with the applied microwave amplitude.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: We consider the electric dipole spin resonance (EDSR) with using the spin-orbit interaction (SOI) in GaAs and Ge based quantum dots formed in a quantum well. We use Schrieffer-Wolff transformation and rotating frame to derive the effective Hamiltonian of EDSR. We treat the couplings of the orbital motion with the environment with Gorini-Kossakowski-Sudarshan-Lindblad (GKSL) master equation. We found that the cubic SOI makes the Rabi frequency non-linear with the applied microwave amplitude. At the same time, the fidelity of the spin manipulations becomes worse since the residual spin-orbital couplings induces spin relaxation.

Related papers

• Microwave Control of the Tin-Vacancy Spin Qubit in Diamond with a Superconducting Waveguide [0.38367845064465667]
  Group-IV color centers in diamond are promising candidates for quantum networks. We demonstrate coherent spin manipulation and obtain a coherence time of up to $T = 430,mu$s. A nearby coupling $13mathrmC$ spin may serve as a quantum memory.
  arXiv  Detail & Related papers  (2024-03-01T13:30:39Z)
• 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)
• Longitudinal coupling between electrically driven spin-qubits and a resonator [0.0]
  We study spin qubits confined in quantum dots at zero magnetic fields that are driven periodically by electrical fields and are coupled to a microwave resonator. We find both transverse and longitudinal couplings between the Floquet spin qubit and the resonator, which can be selectively activated by modifying the driving frequency.
  arXiv  Detail & Related papers  (2023-01-24T17:42:41Z)
• Probing dynamics of a two-dimensional dipolar spin ensemble using single qubit sensor [62.997667081978825]
  We experimentally investigate individual spin dynamics in a two-dimensional ensemble of electron spins on the surface of a diamond crystal. We show that this anomalously slow relaxation rate is due to the presence of strong dynamical disorder. Our work paves the way towards microscopic study and control of quantum thermalization in strongly interacting disordered spin ensembles.
  arXiv  Detail & Related papers  (2022-07-21T18:00:17Z)
• Scrambling and quantum feedback in a nanomechanical system [1.224954637705144]
  The out-of-time ordered correlator (OTOC) is a quantitative measure of the entanglement spreading process. We show that NV spins cannot exert quantum feedback on classical nonlinear oscillators.
  arXiv  Detail & Related papers  (2022-02-04T19:05:43Z)
• Anisotropic electron-nuclear interactions in a rotating quantum spin bath [55.41644538483948]
  Spin-bath interactions are strongly anisotropic, and rapid physical rotation has long been used in solid-state nuclear magnetic resonance. We show that the interaction between electron spins of nitrogen-vacancy centers and a bath of $13$C nuclear spins introduces decoherence into the system. Our findings offer new insights into the use of physical rotation for quantum control with implications for quantum systems having motional and rotational degrees of freedom that are not fixed.
  arXiv  Detail & Related papers  (2021-05-16T06:15:00Z)
• Geometrical Hall effect and momentum-space Berry curvature from spin-reversed band pairs [0.0]
  nanometric, noncoplanar spin textures with scalar spin chirality (SSC) are coupled to itinerant electrons. The resulting deflection of moving charge carriers is termed geometrical (or topological) Hall effect. We show that SOC mixes electronic bands with equal or opposite spin, while SSC is much more effective for opposite spin band pairs.
  arXiv  Detail & Related papers  (2020-10-19T14:10:03Z)
• 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)
• Effect of phonons on the electron spin resonance absorption spectrum [62.997667081978825]
  We model the effect of phonons and temperature on the electron spin resonance (ESR) signal in magnetically active systems. We find that the suppression of ESR signals is due to phonon broadening but not based on the common assumption of orbital quenching.
  arXiv  Detail & Related papers  (2020-04-22T01:13:07Z)
• Effective dynamics for a spin-1/2 particle constrained to a space curve in an electric and magnetic field [4.6145327012456425]
  We consider the dynamics of a spin-1/2 particle constrained to move in an arbitrary space curve with an external electric and magnetic field applied. With the aid of gauge theory, we successfully decouple the tangential and normal dynamics and derive the effective Hamiltonian. A new type of quantum potential called SU(2) Zeeman interaction appears, which is induced by the electric field and couples spin and intrinsic orbital angular momentum.
  arXiv  Detail & Related papers  (2020-02-12T10:03:26Z)
• Spin current generation and control in carbon nanotubes by combining rotation and magnetic field [78.72753218464803]
  We study the quantum dynamics of ballistic electrons in rotating carbon nanotubes in the presence of a uniform magnetic field. By suitably combining the applied magnetic field intensity and rotation speed, one can tune one of the currents to zero while keeping the other one finite, giving rise to a spin current generator.
  arXiv  Detail & Related papers  (2020-01-20T08:54:56Z)

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.