Decoherence induced by anisotropic hyperfine interaction in Si spin qubits

Abstract

We study Si:P donor electron spin decoherence due to anisotropic hyperfine (AHF) interaction with the surrounding nuclear spin bath. In particular, we clarify the electron spin echo envelope modulation (ESEEM) in the Si:P system and the resonancelike contributions from nuclear spins in various shells away from the P atoms. We suggest an approach to minimize AHF-induced decoherence by avoiding the resonances and orienting an applied magnetic field along directions that can periodically eliminate contributions from the dominant nearest neighbor atoms. Our remarkable agreement with experiment demonstrates nearly complete understanding of electron spin decoherence in Si:P when combining ESEEM, spectral diffusion, instantaneous diffusion, and spin-lattice relaxation.

References in corpus (4)

• Fault-Tolerant Quantum Dynamical Decoupling
• Restoring Coherence Lost to a Slow Interacting Mesoscopic Bath
• Electron spin phase relaxation of phosphorus donors in nuclear spin enriched silicon
• Non-ideality of quantum operations with the electron spin of a 31P donor in a Si crystal due to interaction with a nuclear spin system

Cited by in corpus (6)

• Electron Spin Dephasing due to Hyperfine Interactions with a Nuclear Spin Bath
• Pure quantum dephasing of a solid state electron spin qubit in a large nuclear spin bath coupled by long-range hyperfine-mediated interactions
• Nuclear Spins in Nanostructures
• Universal pulse sequence to minimize spin dephasing in the central spin decoherence problem
• Long-time electron spin storage via dynamical suppression of hyperfine-induced decoherence in a quantum dot
• Wavefunction considerations for the central spin decoherence problem in a nuclear spin bath