Coherence of Spin-Polarized Fermions Interacting with a Clock Laser in a Stark-Shift-Free Optical Lattice

Abstract

We investigated the coherence of spin-polarized ^{87}Sr atoms trapped in a light-shift-free one-dimensional optical lattice during their interaction with a clock laser on the ^1S_0-^3P_0 transition. Collapses and revivals appeared for more than 50 Rabi cycles, attributed to the thermal distribution of discrete vibrational states in the lattice potential. The population oscillation in the clock states lasted more than 1s, demonstrating high immunity from decoherence. This long atomic coherence suggests the feasibility of Pauli blocking of collisions in optical clock excitation.

arXiv comment10 pages, 4 figures

References in corpus (15)

• Cold bosonic atoms in optical lattices
• The cold atom Hubbard toolbox
• Sr lattice clock at 1x10^{-16} fractional uncertainty by remote optical evaluation with a Ca clock
• High-temperature superfluidity of fermionic atoms in optical lattices
• Controlled exchange interaction between pairs of neutral atoms in an optical lattice
• Radio-Frequency Spectroscopy of Ultracold Fermions
• Observation of photon-assisted tunneling in optical lattices
• An Optical Clock with Ultracold Neutral Atoms
• Pauli Blocking of Collisions in a Quantum Degenerate Atomic Fermi Gas
• Collisionally Induced Transport in Periodic Potentials
• Improved frequency measurement of a one-dimensional optical lattice clock with a spin-polarized fermionic ${}^{87}$Sr isotope
• Defect-Suppressed Atomic Crystals in an Optical Lattice
• Properties of metastable alkaline-earth-metal atoms calculated using an accurate effective core potential
• Controlling the cold collision shift in high precision atomic interferometry
• Efficient and robust initialization of a qubit register with fermionic atoms

Cited by in corpus (6)

• Colloquium: Physics of optical lattice clocks
• Decoherence and Collisional Frequency Shifts of Trapped Bosons and Fermions
• Many-body treatment of the collisional frequency shift in fermionic atoms
• Dual-Mode Operation of an Optical Lattice Clock Using Strontium and Ytterbium Atoms
• Plane-selective manipulations of nuclear spin qubits in a three-dimensional optical tweezer array
• Decomposed description of Ramsey spectra under atomic interactions