Development of a strontium optical lattice clock for the SOC mission on the ISS

Origlia, Stefano; Schiller, S.; Pramod, M. S.; Smith, Lyndsie; Singh, Yeshpal; He, Wei; Viswam, Sruthi; Świerad, Dariusz; Hughes, James W.; Bongs, Kai; Sterr, U.; Lisdat, Ch.; Vogt, Stefan; Bize, S.; Lodewyck, Jérôme; Targat, Rodolphe Le; Holleville, David; Venon, Bertrand; Gill, P.; Barwood, G. P.; Hill, Ian R.; Ovchinnikov, Yuri B.; Kulosa, A. P.; Ertmer, W.; E.-M., Rasel; Stühler, J.; Kaenders, Wilhelm

doi:10.1117/12.2229473

Cited by 18 publications

(14 citation statements)

References 22 publications

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“…Beyond GW detection, clocks also offer sensitivity to other fundamental physical and astronomical phenomena that may couple to atomic properties such as mass, charge, and spin, including searches for dark matter, violations of fundamental symmetries, and variations of fundamental constants [36][37][38][39]. Key challenges to be addressed in future works include the following: the development of optimized clock measurement protocols tailored for GW sources of interest, as well as spectral characterization and detection feasibility studies of known GW sources; the design of space-hardy, high-precision atomic clocks and ultrastable lasers [40], which will also directly benefit other proposed space-based GW detectors; detailed analysis of the noise susceptibility of DD sequences requiring many operations [64]; and the demonstration of quantum metrology techniques involving entanglement to enhance both the sensitivity and detection bandwidth of clock GW detectors.…”

Section: Discussionmentioning

confidence: 99%

“…1, consists of two drag-free satellites in heliocentric orbit (A and B), separated by a length d and connected over a single optical link using conventional optical telescopes. Each satellite contains its own optical lattice atomic clock [11][12][13]40], and its own ultrastable laser [41]. The laser in satellite B is kept phase locked to the light sent from satellite A over the optical link, such that the two lasers function as a single ultrastable clock laser shared between the two satellites.…”

Section: Sensing Gravitational Waves Using Optical Lattice Atomicmentioning

confidence: 99%

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Gravitational wave detection with optical lattice atomic clocks

et al. 2016

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We propose a space-based gravitational wave (GW) detector consisting of two spatially separated, dragfree satellites sharing ultrastable optical laser light over a single baseline. Each satellite contains an optical lattice atomic clock, which serves as a sensitive, narrowband detector of the local frequency of the shared laser light. A synchronized two-clock comparison between the satellites will be sensitive to the effective Doppler shifts induced by incident GWs at a level competitive with other proposed space-based GW detectors, while providing complementary features. The detected signal is a differential frequency shift of the shared laser light due to the relative velocity of the satellites, and the detection window can be tuned through the control sequence applied to the atoms' internal states. This scheme enables the detection of GWs from continuous, spectrally narrow sources, such as compact binary inspirals, with frequencies ranging from ∼3 mHz-10 Hz without loss of sensitivity, thereby bridging the detection gap between spacebased and terrestrial optical interferometric GW detectors. Our proposed GW detector employs just two satellites, is compatible with integration with an optical interferometric detector, and requires only realistic improvements to existing ground-based clock and laser technologies.

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Section: Discussionmentioning

confidence: 99%

Section: Sensing Gravitational Waves Using Optical Lattice Atomicmentioning

confidence: 99%

Gravitational wave detection with optical lattice atomic clocks

et al. 2016

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“…The lattice clock apparatus with its cooling and manipulation lasers is described in [26,27]. Atoms are cooled and trapped in a 1D vertically oriented optical lattice (magic wavelength: 813 nm, ∼ 40 µm waist radius).…”

Section: The Experimental Apparatusmentioning

confidence: 99%

Towards an optical clock for space: Compact, high-performance optical lattice clock based on bosonic atoms

et al. 2018

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Optical lattice clocks with uncertainty and instability in the 10 −17 -range and below have so far been demonstrated exclusively using fermions. Here, we demonstrate a bosonic optical lattice clock with 3 × 10 −18 instability and 2.0 × 10 −17 accuracy, both values improving on previous work by a factor 30. This was enabled by probing the clock transition with an ultra-long interrogation time of 4 s, using the long coherence time provided by a cryogenic silicon resonator, by careful stabilization of relevant operating parameters, and by operating at low atom density. This work demonstrates that bosonic clocks, in combination with highly coherent interrogation lasers, are suitable for highaccuracy applications with particular requirements, such as high reliability, transportability, operation in space, or suitability for particular fundamental physics topics. As an example, we determine the 88 Sr -87 Sr isotope shift with 12 mHz uncertainty.

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“…Recent progress in the development of quantum sensors has led to systems outperforming classical devices, such as quantum gravimeters 4,5 , and clocks exceeding 10 −17 accuracy 2, 6,7 . New applications such as relativistic geodesy 8 using transportable optical clocks [9][10][11] or taking advantage of the long interaction times in atom interferometry experiments in a microgravity or even space environment [12][13][14] have emerged. For these applications, quantum optics experiments need to be operated outside highly-specialized laboratories, increasing the demands in terms of mechanical robustness of the optical setups.…”

Section: Introductionmentioning

confidence: 99%

A highly stable monolithic enhancement cavity for second harmonic generation in the ultraviolet

Hannig

Mielke

Fenske

et al. 2018

Review of Scientific Instruments

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We present a highly stable bow-tie power enhancement cavity for critical second harmonic generation (SHG) into the UV using a Brewster-cut β-BaBO (BBO) nonlinear crystal. The cavity geometry is suitable for all UV wavelengths reachable with BBO and can be modified to accommodate anti-reflection coated crystals, extending its applicability to the entire wavelength range accessible with non-linear frequency conversion. The cavity is length-stabilized using a fast general purpose digital PI controller based on the open source STEMlab 125-14 (formerly Red Pitaya) system acting on a mirror mounted on a fast piezo actuator. We observe 130 h uninterrupted operation without decay in output power at 313 nm. The robustness of the system has been confirmed by exposing it to accelerations of up to 1 g with less than 10% in-lock output power variations. Furthermore, the cavity can withstand 30 min of acceleration exposure at a level of 3 g without substantial change in the SHG output power, demonstrating that the design is suitable for transportable setups.

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Development of a strontium optical lattice clock for the SOC mission on the ISS

Cited by 18 publications

References 22 publications

Gravitational wave detection with optical lattice atomic clocks

Gravitational wave detection with optical lattice atomic clocks

Towards an optical clock for space: Compact, high-performance optical lattice clock based on bosonic atoms

A highly stable monolithic enhancement cavity for second harmonic generation in the ultraviolet

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