Electric field manipulation enhanced by strong spin-orbit coupling: promoting rare-earth ions as qubits
arXiv:1908.09274 · doi:10.1093/nsr/nwaa148
Abstract
Quantum information processing based on magnetic ions are considered potential candidates for applications because they can be modified and scaled up by a variety of chemical methods. For these systems to achieve individual spin addressability and high energy efficiency, we exploited the electric field as a tool to manipulate their quantum behaviours, functioning via spin-orbit coupling. A Ce:YAG single crystal was employed due to that rare-earth ions have strong spin-orbit coupling and with considerations regarding the dynamics and the symmetry requirements. The Stark effect of the Ce3+ ion was observed and measured. When demonstrated as a quantum phase gate, the electric field manipulation exhibited high efficiency which allowed up to 57 π/2 operations before decoherence with optimized field directions. It was also utilized to carry out quantum bang-bang control, as a method of dynamic decoupling, and the refined Deutsch-Jozsa algorithm. Our experiments highlighted rare-earth ions as potentially applicable qubits since they offer enhanced spin-electric coupling which enables high-efficiency quantum manipulation.
References in corpus (20)
- Quantum Mechanics helps in searching for a needle in a haystack
- Quantum Computing in Molecular Magnets
- Dynamical suppression of decoherence in two-state quantum systems
- Driven coherent oscillations of a single electron spin in a quantum dot
- Sensing electric fields using single diamond spins
- Coherent control of a single electron spin with electric fields
- A solid state light-matter interface at the single photon level
- Decoherence in Crystals of Quantum Molecular Magnets
- Bang-bang control of fullerene qubits using ultra-fast phase gates
- Coherent properties of single rare-earth spin qubits
- Room-temperature implementation of the Deutsch-Jozsa algorithm with a single electronic spin in diamond
- Deutsch-Jozsa algorithm as a test of quantum computation
- Coherent electrical control of a single high-spin nucleus in silicon
- Electric field control of spins in molecular magnets
- Stark Tuning of Donor Electron Spins in Silicon
- Electric Dipole Induced Spin Resonance in Disordered Semiconductors
- Coherent spin control by electrical manipulation of the magnetic anisotropy
- Conditional control of donor nuclear spins in silicon using Stark shifts
- NMR analogues of the quantum Zeno effect
- Stark shift and field ionization of arsenic donors in Si-SOI structures