Towards a Molecular Lattice Clock: Magic-Wavelength Vibrational Spectroscopy of Sr $_{\mathrm{2}}$ Towards a Molecular Lattice Clock: Magic-Wavelength Vibrational Spectroscopy of Sr$_{\mathrm{2}}$

Kon H. Leung, Chih-Hsi Lee, Stanimir Kondov +2 more

Bulletin of the American Physical SocietyMay 29, 20180 citations

Cavity enhanced spectroscopy on the clock transition in $^{87}$ SrCavity enhanced spectroscopy on the clock transition in $^{87}$Sr

Juan A. Muniz, Julia Cline, Dylan J. Young +1 more

Bulletin of the American Physical SocietyMay 28, 20190 citations

Systematic Study of the $^{87}$ Sr Clock Transition in an Optical LatticeSystematic Study of the $^{87}$Sr Clock Transition in an Optical Lattice

Martin M. Boyd, Andrew D. Ludlow, Tanya Zelevinsky +5 more

Bulletin of the American Physical SocietyMay 18, 200658 citations

SR OPTICAL CLOCK WITH HIGH STABILITY AND ACCURACY

Andrew D. Ludlow, Sebastian Blatt, M. BOYD +12 more

We report on our recent evaluations of stability and accuracy of the JILA Sr optical lattice clock. We discuss precision tools for the lattice clock, including a stabilized clock laser with sub-Hz linewidth, fs-comb based technology allowing accurate clock comparison in both the microwave and optical domains, and clock transfer over optical fiber in an urban environment. High resolution spectroscopy (Q > 2 × 10^14) of lattice-confined, spin-polarized strontium atoms is used for both a high-performance optical clock and atomic structure measurement. Using a Ca optical standard for comparison, the overall systematic uncertainty of the Sr clock is reduced to < 2 × 10^−16We report on our recent evaluations of stability and accuracy of the JILA Sr optical lattice clock. We discuss precision tools for the lattice clock, including a stabilized clock laser with sub-Hz linewidth, fs-comb based technology allowing accurate clock comparison in both the microwave and optical domains, and clock transfer over optical fiber in an urban environment. High resolution spectroscopy (Q > 2 × 10^14) of lattice-confined, spin-polarized strontium atoms is used for both a high-performance optical clock and atomic structure measurement. Using a Ca optical standard for comparison, the overall systematic uncertainty of the Sr clock is reduced to < 2 × 10^−16

Laser SpectroscopyApr 1, 20080 citations

Probing many-body spin interactions with an optical lattice clock

Ana María Rey, Michael J. Martin, Matthew D. Swallows +6 more

Advances in ultra-stable lasers now permit sub-Hz resolution of optical atomic transitions. At this level, weak interactions by any ordinary scale can in fact dominate the dynamics of the interrogated atoms, even for spin polarized fermions at ultralow temperatures. Contrary to results obtained in radio frequency spectroscopy of alkali fermionic atoms, optical spectroscopy of 87 Sr and 171 Yb has revealed density dependent frequency shifts of the 1 S0 - 3 P 0 “clock” transition. Understanding interactions in these systems is necessary to improve their accuracy and stability. Moreover, such an understanding will enable optical lattice clock systems to serve as quantum simulators for open, driven, strongly-interacting quantum systems at the mesoscopic scale. In this talk we presented our progress towards a comprehensive evaluation and understanding of the interactions present during spectroscopy of the 87 Sr clock transition under various operating conditions. Our studies indicate that a mean-field solution of a master equation is sufficient to capture the many-body dynamics of alkaline earth atom clocks. Entering the regime in which a treatment beyond mean-field is required for a proper description of the clock dynamics is under immediate experimental reach.Advances in ultra-stable lasers now permit sub-Hz resolution of optical atomic transitions. At this level, weak interactions by any ordinary scale can in fact dominate the dynamics of the interrogated atoms, even for spin polarized fermions at ultralow temperatures. Contrary to results obtained in radio frequency spectroscopy of alkali fermionic atoms, optical spectroscopy of 87 Sr and 171 Yb has revealed density dependent frequency shifts of the 1 S0 - 3 P 0 “clock” transition. Understanding interactions in these systems is necessary to improve their accuracy and stability. Moreover, such an understanding will enable optical lattice clock systems to serve as quantum simulators for open, driven, strongly-interacting quantum systems at the mesoscopic scale. In this talk we presented our progress towards a comprehensive evaluation and understanding of the interactions present during spectroscopy of the 87 Sr clock transition under various operating conditions. Our studies indicate that a mean-field solution of a master equation is sufficient to capture the many-body dynamics of alkaline earth atom clocks. Entering the regime in which a treatment beyond mean-field is required for a proper description of the clock dynamics is under immediate experimental reach.

Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS)May 1, 20121 citation

Precision Measurements with an 87Sr Optical Lattice Clock

Travis Nicholson, Gretchen K. Campbell, Sebastian Blatt +6 more

Bulletin of the American Physical SocietyMay 23, 20090 citations

Ultra-high resolution spectroscopy with a

^{87}

Sr lattice clock

Towards a Molecular Lattice Clock: Magic-Wavelength Vibrational Spectroscopy of Sr

_{\mathrm{2}}

Cavity enhanced spectroscopy on the clock transition in

^{87}

Systematic Study of the

^{87}

Sr Clock Transition in an Optical Lattice