| Atomic clock performance beyond the geodetic limit WF McGrew, X Zhang, RJ Fasano, SA Schäffer, K Beloy, D Nicolodi, ... Nature 564, 87-90, 2018 | 814* | 2018 |
| Frequency ratio measurements with 18-digit accuracy using a network of optical clocks K Beloy, MI Bodine, T Bothwell, SM Brewer, SL Bromley, JS Chen, ... Nature 591, 564–569, 2021 | 389* | 2021 |
| AEDGE: atomic experiment for dark matter and gravity exploration in space YA El-Neaj, C Alpigiani, S Amairi-Pyka, H Araújo, A Balaž, A Bassi, ... EPJ Quantum Technology 7 (1), 1-27, 2020 | 363* | 2020 |
| Towards the optical second: verifying optical clocks at the SI limit WF McGrew, X Zhang, H Leopardi, RJ Fasano, D Nicolodi, K Beloy, J Yao, ... Optica 6 (4), 448-454, 2019 | 146 | 2019 |
| Cold atoms in space: community workshop summary and proposed road-map I Alonso, C Alpigiani, B Altschul, H Araújo, G Arduini, J Arlt, L Badurina, ... EPJ Quantum Technology 9 (1), 1-55, 2022 | 72 | 2022 |
| Lasing on a narrow transition in a cold thermal strontium ensemble SA Schäffer, M Tang, MR Henriksen, AA Jørgensen, BTR Christensen, ... Physical Review A 101 (1), 013819, 2020 | 68 | 2020 |
| Optical-Clock-Based Time Scale J Yao, JA Sherman, T Fortier, H Leopardi, T Parker, W McGrew, X Zhang, ... Physical Review Applied 12 (4), 044069, 2019 | 48 | 2019 |
| Nonlinear spectroscopy of Sr atoms in an optical cavity for laser stabilization BTR Christensen, MR Henriksen, SA Schäffer, PG Westergaard, D Tieri, ... Physical Review A 92 (5), 053820, 2015 | 45 | 2015 |
| Optical atomic clock comparison through turbulent air MI Bodine, JD Deschênes, IH Khader, WC Swann, H Leopardi, K Beloy, ... Physical Review Research 2 (3), 033395, 2020 | 33 | 2020 |
| Faraday-shielded dc Stark-shift-free optical lattice clock K Beloy, X Zhang, WF McGrew, N Hinkley, TH Yoon, D Nicolodi, ... Physical review letters 120 (18), 183201, 2018 | 24 | 2018 |
| Dynamics of bad-cavity enhanced interaction with cold Sr atoms for laser stabilization SA Schäffer, BTR Christensen, MR Henriksen, JW Thomsen Physical Review A 96, 013847, 2017 | 24 | 2017 |
| Cavity-immune spectral features in the pulsed superradiant crossover regime M Tang, SA Schäffer, AA Jørgensen, MR Henriksen, BTR Christensen, ... Physical Review Research 3 (3), 033258, 2021 | 16* | 2021 |
| Progress on optical‐clock‐based time scale at NIST: Simulations and preliminary real‐data analysis J Yao, J Sherman, T Fortier, H Leopardi, T Parker, J Levine, J Savory, ... Navigation: Journal of The Institute of Navigation 65 (4), 601-608, 2018 | 15* | 2018 |
| Collectively enhanced Ramsey readout by cavity sub-to superradiant transition EA Bohr, SL Kristensen, C Hotter, SA Schäffer, J Robinson-Tait, ... Nature Communications 15 (1), 1084, 2024 | 12 | 2024 |
| Prospects of a superradiant laser based on a thermal or guided beam of M Tang, SA Schäffer, JH Müller Physical Review A 106 (6), 063704, 2022 | 9 | 2022 |
| Towards passive and active laser stabilization using cavity-enhanced atomic interaction SA Schäffer, BTR Christensen, SM Rathmann, MH Appel, MR Henriksen, ... Journal of Physics: Conference Series 810 (1), 012002, 2017 | 9 | 2017 |
| Optical frequency measurements at 1× 10− 18 uncertainty with ytterbium optical lattice clocks AD Ludlow, WF McGrew, X Zhang, D Nicolodi, RJ Fasano, SA Schaffer, ... 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018), 1-2, 2018 | 7 | 2018 |
| Large waist cavity for ultra-narrow transition spectroscopy SA Schäffer, SS Adsersen, BTR Christensen, JW Thomsen Frequency Control Symposium & the European Frequency and Time Forum (FCS …, 2015 | 4 | 2015 |
| Towards a continuous superradiant laser on the strontium 1S0-3P0 transition C Beli Silva, F Famà, S Zhou, S Alaric Schäffer, G A Kazakov, B Pasquiou, ... Bulletin of the American Physical Society 66, 2021 | 3 | 2021 |
| Cavity-Enhanced Optical Clocks SA Schäffer Niels Bohr Institute, Universtiy of Copenhagen, 2019 | 3* | 2019 |
Robert FasanoNIST, University of ColoradoVerified email at colorado.edu