Toffoli gate based on a three-body fine-structure-state-changing Förster resonance in Rydberg atoms

Abstract

We have developed an improved scheme of a three-qubit Toffoli gate based on fine structure state changing three-body Stark-tuned Rydberg interaction. This scheme is a substantial improvement of our previous proposal [I.I.Beterov et al., Physical Review A 98, 042704 (2018)]. Due to the use of a different type of three-body Förster resonance we substantially simplified the scheme of laser excitation and phase dynamics of collective three-body states. This type of Förster resonance exists only in systems with more than two atoms, while the two-body resonance is absent. We reduced the sensitivity of the gate fidelity to fluctuations of external electric field and eliminated the necessity to use external magnetic field for fine tuning of the resonant electric field value, compared to the previous scheme of Toffoli gate based on Rydberg atoms. A gate fidelity of >99% was demonstrated in the calculations.

References in corpus (14)

• Quantum Phases of Matter on a 256-Atom Programmable Quantum Simulator
• Single-Spin Addressing in an Atomic Mott Insulator
• Quasiclassical calculations of BBR-induced depopulation rates and effective lifetimes of Rydberg nS, nP and nD alkali-metal atoms with n < 80
• Quantum simulation and computing with Rydberg-interacting qubits
• Consequences of Zeeman Degeneracy for van der Waals Blockade between Rydberg Atoms
• Coherent dipole-dipole coupling between two single atoms at a Förster resonance
• High-fidelity laser-free universal control of two trapped ion qubits
• Enhanced atom-by-atom assembly of arbitrary tweezers arrays
• High fidelity entanglement of neutral atoms via a Rydberg-mediated single-modulated-pulse controlled-PHASE gate
• Manipulation of Single Neutral Atoms in Optical Lattices
• Entanglement purification and protection in a superconducting quantum network
• Three-body Förster resonance of a new type in Rydberg atoms
• Atomic interactions for qubit-error compensations
• Searching optimal conditions for quantum gates application with the new 3-body Förster resonances in Rb and Cs Rydberg atoms

Cited by in corpus (4)

• Long-range $CC\Phi$ gates via radio-frequency-induced Förster resonances
• Speeding up Quantum Annealing with Engineered Dephasing
• Rabi oscillations at three-photon laser excitation of a single rubidium Rydberg atom in an optical dipole trap
• Splitting of the three-body Förster resonance in Rb Rydberg atoms as a measure of dipole-dipole interaction strength