Guidelines for developing optical clocks with 10−18 fractional frequency uncertainty
OC18 consortium, arXiv (2019)

A pyramid MOT with integrated optical cavities as a cold atom platform for an optical lattice clock
W. Bowden, R. Hobson, I.R. Hill, A. Vianello, M. Schioppo, A. Silva, H.S. Margolis, P.E.G. Baird and P. Gill,
Scientific Reports 9, 11704 (2019)

Optical clock comparison for Lorentz symmetry testing
Chr. Sanner, N. Huntemann, R. Lange, Chr. Tamm, E. Peik, M.S. Safronova and S.G. Porsev,
Nature 567, 204 (2019)

Towards an optical clock for space: Compact, high-performance optical lattice clock based on bosonic atoms
S. Origlia, M.S. Pramod, S. Schiller, Y. Singh, K. Bongs, R. Schwarz, A. Al-Masoudi, S. Dörscher, S. Herbers, S. Häfner, U. Sterr and Chr. Lisdat,
Physical Review A 98, 053443 (2018)

Highly charged ions: optical clocks and applications in fundamental physics
M.G. Kozlov, M.S. Safronova, J.R. Crespo López-Urrutia and P.O. Schmidt,
Reviews of Modern Physics 90, 045005 (2018)

946-nm Nd:YAG digital-locked laser at 1.1 × 10−16 in 1 s and transfer-locked to a cryogenic silicon cavity
A. Didier, S. Ignatovich, E. Benkler, M. Okhapkin and T.E. Mehlstäubler,
Optics Letters 44, 1781 (2019)

Tailored design of mode-locking dynamics for low-noise frequency comb generation
Ç. Şenel, R. Hamid, C. Erdoğan, M. Çelik and F.Ő. Ilday,
Physical Review Applied 10, 024027 (2018)

Lattice-induced photon scattering in an optical lattice clock
S. Dörscher, R. Schwarz, A. Al-Masoudi, S. Falke, U. Sterr and Chr. Lisdat,
Physical Review A 97, 063419 (2018)

Atomic clocks for geodesy
T.E. Mehlstäubler, G. Grosche, Chr. Lisdat, P.O. Schmidt and H. Denker,
Reports on Progress in Physics 81, 064401 (2018)

New bounds on dark matter coupling from a global network of optical atomic clocks
P. Wcisło, P. Ablewski, K. Beloy, S. Bilicki, M. Bober, R. Brown, R. Fasano, R. Ciuryło, H. Hachisu, T. Ido, J. Lodewyck, A. Ludlow, W. McGrew, P. Morzyński, D. Nicolodi, M. Schioppo, M. Sekido, R. Le Targat, P. Wolf, X. Zhang, B. Zjawin and M. Zawada,
Science Advances 4, eaau4869 (2018)

Optical lattice clocks with weakly bound molecules
M. Borkowski,
Physical Review Letters 120, 083202 (2018)

Phase-noise cancellation in polarisation maintaining fibre links
B. Rauf, M.C. Vélez López, P. Thoumany, M. Pizzocaro and D. Calonico,
Review of Scientific Instruments 89, 033103 (2018)

Dynamics of bad-cavity-enhanced interaction with cold Sr atoms for laser stabilization
S.A. Schäffer, B.T.R. Christensen, M.R. Henriksen, and J.W. Thomsen,
Physical Review A 96, 013847 (2017)

1.5 μm lasers with sub-10 mHz linewidth
D.G. Matei, T. Legero, S. Häfner, C. Grebing, R. Weyrich, W. Zhang, L. Sonderhouse, J.M. Robinson, J. Ye, F. Riehle, and U. Sterr,
Physical Review Letters 118, 263202 (2017)

Ultrastable silicon cavity in a continuously operating closed-cycle cryostat at 4 K
W. Zhang, J.M. Robinson, L. Sonderhouse, E. Oelker, C. Benko, J.L. Hall, T. Legero, D.G. Matei, F. Riehle, U. Sterr and J. Ye,
Physical Review Letters 119, 243601 (2017)

Absolute frequency measurement of the 2S1/22F7/2 optical clock transition in
171Yb+ with an uncertainty of 4 × 10−16 using a frequency link to international
atomic time

C.F.A. Baynham, R.M. Godun, J.M. Jones, S.A. King, P.B.R. Nisbet-Jones,
F. Baynes, A. Rolland, P.E.G. Baird, K. Bongs, P. Gill and H.S. Margolis,
Journal of Modern Optics 65, 585-591 (2018)

Multiple wavelength stabilization on a single optical cavity using the offset sideband
locking technique

G. Milani, B. Rauf, P. Barbieri, F. Bregolin, M. Pizzocaro, P. Thoumany, F. Levi, and D. Calonico,
Optics Letters 42, 1970 (2017)

Test of Special Relativity Using a Fiber Network of Optical Clocks
P. Delva, J. Lodewyck, S. Bilicki, E. Bookjans, G. Vallet, R. Le Targat, P.-E. Pottie, C. Guerlin, F. Meynadier, C. Le Poncin-Lafitte, O. Lopez, A. Amy-Klein, W.-K. Lee, N. Quintin, C. Lisdat, A. Al-Masoudi, S. Dörscher, C. Grebing, G. Grosche, A. Kuhl, S. Raupach, U. Sterr, I. R. Hill, R. Hobson, W. Bowden, J. Kronjäger, G. Marra, A. Rolland, F. N. Baynes, H. S. Margolis, and P. Gill,
Physical Review Letters 118, 221102 (2017)

Dispersive heterodyne probing method for laser frequency stabilization based on spectral hole burning in rare-earth doped crystals
O. Gobron, K. Jung, N. Galland, K. Predehl, R. Le Targat, A. Ferrier, P. Goldner, Seidelin, and Y. Le Coq,
Optics Express 25, 15539 (2017)

A noise-immune cavity-assisted non-destructive detection for an optical lattice clock in the quantum regime
G. Vallet, E. Bookjans, U. Eismann, S. Bilicki, R. Le Targat and J. Lodewyck,
New Journal of Physics 19, 083002 (2017)

Ab initio studies of the ground and first excited states of the Sr–H2 and Yb–H2complexes
H. Cybulski,
Journal of Chemical Physics 150, 064316 (2019)

Optical Feshbach resonances and ground state molecule production in the RbHg system
M. Borkowski, R. Muñoz Rodriguez, M.B. Kosicki, R. Ciuryło and P.S. Żuchowski,
Physical Review A 96, 063411 (2017)

Beyond-Born-Oppenheimer effects in sub-kHz-precision photoassociation spectroscopy of ytterbium atoms
M. Borkowski, A.A. Buchachenko, R. Ciuryło, P.S. Julienne, H. Yamada, Y. Kikuchi, K. Takahashi, Y. Takasu and Y. Takahashi,
Physical Review A 96, 063405 (2018)

Auto-Balanced Ramsey Spectroscopy
C. Sanner, N. Huntemann, R. Lange, C. Tamm, and E. Peik,
Physical Review Letters 120, 053602 (2018)

Fibre-optic delivery of time and frequency to VLBI station
P. Krehlik, Ł. Buczek, J. Kołodziej, M. Lipiński, Ł. Śliwczyński, J. Nawrocki, P. Nogaś, A. Marecki, E. Pazderski, P. Ablewski, M. Bober, R. Ciuryło, A. Cygan, D. Lisak, P. Masłowski, P. Morzyński, M. Zawada, R. M. Campbell, J. Pieczerak, A. Binczewski, and K. Turza,
Astronomy and Astrophysics  603, A48 (2017)

On-line estimation of local oscillator noise and optimisation of servo parameters in atomic clocks
I. D. Leroux, N. Scharnhorst, S. Hannig, J. Kramer, L. Pelzer, M. Stepanova and P. O. Schmidt,
Metrologia 54, 307 (2017)

Absolute frequency determination of molecular transition in the Doppler regime at kHz level of accuracy
K. Bielska, S. Wójtewicz, P. Morzyński, P. Ablewski, A. Cygan, M. Bober, J. Domysławska, M. Zawada, R. Ciuryło, P. Masłowski and D. Lisak,
Journal of Quantitative Spectroscopy and Radiative Transfer, 201, 156 (2017)

Experimental constraint on dark matter detection with optical atomic clocks
P. Wcisło, P. Morzyński, M. Bober, A. Cygan, D. Lisak, R. Ciuryło and M. Zawada,
Nature Astronomy 1, 0009 (2016)

Absolute frequency measurement of the 1S03P0 transition of 171Yb
M. Pizzocaro, P. Thoumany, B. Rauf, F. Bregolin, G. Milani, C. Clivati, G. A. Costanzo, F. Levi and D. Calonico,
Metrologia 54, 102 (2017)

Funding statement:
Support has been received from the project EMPIR 15SIB03 OC18.
This project has received funding from the EMPIR programme co-financed by the Participating States and from the European Union’s Horizon 2020 research and innovation programme.

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