Versatile Control of ^{9}Be^{+} Ions Using a Spectrally Tailored UV Frequency Comb

Area of Science:

• Quantum Information Science
• Atomic Physics
• Laser Spectroscopy

Background:

• Precise control of atomic ions is crucial for quantum computing and simulation.
• Optical frequency combs offer unique capabilities for high-resolution spectroscopy and laser manipulation.

Purpose of the Study:

• To demonstrate quantum control of 9Be+ ions using a novel optical frequency comb technique.
• To develop a spectrally tailored frequency comb for efficient ion manipulation.
• To enable quantum logic and information experiments in Penning traps.

Main Methods:

• Numerical simulations of 9Be+ ion dynamics in various magnetic fields.
• Generation of a spectrally tailored, narrow-bandwidth optical frequency comb near 313 nm.
• Stimulated Raman manipulation of internal and motional states of 9Be+ ions.

Main Results:

• Demonstrated wide applicability of spectral comb control for 9Be+ ions.
• Achieved selective and efficient generation of a tailored optical frequency comb.
• Experimentally demonstrated internal state control and internal-motional state coupling of 9Be+ ions.

Conclusions:

• The pulsed laser approach using a spectrally optimized optical frequency comb is effective for quantum control of 9Be+ ions.
• This technique is a key enabler for quantum logic and quantum information experiments.
• The method shows broad applicability across different magnetic field regimes.