State-Dependent Optical Lattices for the Strontium Optical Qubit

Area of Science:

• Atomic, Molecular, and Optical Physics
• Quantum Information Science
• Quantum Simulation

Background:

• Strontium (Sr) optical qubits are promising for quantum technologies.
• Controlling qubit states independently is crucial for scalable quantum computation.
• Inelastic collisions between excited state atoms pose a significant challenge.

Purpose of the Study:

• To demonstrate state-dependent optical lattices for the Sr optical qubit.
• To enable precise control over different atomic states.
• To mitigate inelastic collisions in Sr-based quantum systems.

Main Methods:

• Utilizing tune-out wavelengths for state-selective optical lattices.
• Achieving high-contrast trapping of excited state atoms.
• Minimizing lattice effects on ground state atoms (suppression > 4 orders of magnitude).

Main Results:

• Demonstrated state-dependent optical lattices for the Sr optical qubit.
• Achieved tight trapping of excited state atoms.
• Significantly suppressed lattice interaction for ground state atoms.
• Identified discrepancies in atomic data for Sr optical lattice clocks.

Conclusions:

• State-dependent optical lattices effectively isolate Sr optical qubit states.
• This method removes inelastic excited state collisions as a primary obstacle.
• The findings are critical for advancing Sr optical qubit-based quantum simulation and computation.
• Discrepancies in atomic data necessitate re-evaluation for Sr optical lattice clock calibration.