Optically loaded Strontium lattice clock with a single multi-wavelength reference cavity

Abstract

We report on the realization of a new compact strontium optical clock using a 2-D magneto-optical-trap (2D-MOT) as cold atomic source and a multi-wavelength cavity as the frequency stabilization system. All needed optical frequencies are stabilized to a zero-thermal expansion high-finesse optical resonator and can be operated without frequency adjustments for weeks. We present the complete characterization of the apparatus. Optical control of the atomic source allows us to perform low-noise clock operation without atomic signal normalization. Long- and short-term stability tests of the clock have been performed for the 88 Sr bosonic isotope by means of interleaved clock operation. Finally, we present the first preliminary accuracy budget of the system.

References in corpus (22)

• Systematic evaluation of an atomic clock at 2e-18 total uncertainty
• Geodesy and metrology with a transportable optical clock
• Resolving the gravitational redshift within a millimeter atomic sample
• Ultra-stable optical clock with two cold-atom ensembles
• A Fermi-degenerate three-dimensional optical lattice clock
• Multipolar theory of black-body radiation shift of atomic energy levels and its implications for optical lattice clocks
• Magnetic field-induced spectroscopy of forbidden optical transitions with application to lattice-based optical atomic clocks
• 8E-17 fractional laser frequency instability with a long room-temperature cavity
• Rabi Spectroscopy and Excitation Inhomogeneity in a 1D Optical Lattice Clock
• Laser frequency stabilization to a single ion
• An atomic array optical clock with single-atom readout
• Collisional losses, decoherence, and frequency shifts in optical lattice clocks with bosons
• Scattering of Cold Atom Coherences by Hot Atoms: Frequency Shifts from Background Gas Collisions
• Long term measurement of the ${}^{87}$Sr clock frequency at the limit of primary Cs clocks
• Lattice-induced photon scattering in an optical lattice clock
• Providing 1E-16 short-term stability of a 1.5 μm laser to optical clocks
• Isotope-shift spectroscopy of the ${}^1{S}_0\to {}^3{P}_1$ and ${}^1{S}_0\to {}^3{P}_0$ transitions in strontium
• Rugged mHz-Linewidth Superradiant Laser Driven by a Hot Atomic Beam
• A Sideband-Enhanced Cold Atomic Source For Optical Clocks
• A high stability semiconductor laser system for a ${}^{88}$Sr-based optical lattice clock
• Robust frequency stabilization of multiple spectroscopy lasers with large and tunable offset frequencies
• Toward a quantum-enhanced strontium optical lattice clock at INRIM