edu; [email protected] Bothwell [. Andrew Ludlow is a physicist and leader of the Neutral Atom Optical Clock Group in the Physical Measurement Laboratory at the National Institute of Standards and Technology in Boulder. Al+/Yb Al+/Sr Yb/Sr 27 Al+ 1. Colin J Kennedy 1 , Eric Oelker 1 , John M Robinson 1 , Tobias Bothwell 1 , Dhruv Kedar 1 , William R Milner 1 , G Edward Marti 1 2 , Andrei Derevianko 3 , Jun Ye 1 Affiliations 1 JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309-0440, USA. Thermal imaging of dust hiding the black hole in NGC 1068. Our result is enabled by improving the fractional frequency measurement uncertainty by more than a factor of 10, now reaching 7. Demonstration of a Timescale Based on a Stable Optical Carrier William R. Evaporative cooling to degeneracy proceeded by. Fortier,3 Jeffrey A. Request PDF | On Jul 7, 2021, Y. Edward Marti, Andrei Derevianko and Jun Ye, 12 November 2020, Physical Review Letters. Sterr, F. Colin J. 3 . Bothwell had part of Crichton Castle rebuilt in the Italian Renaissance style, c. An optical lattice clock based on partially delocalized Wannier-Stark states in a gravity-tilted shallow lattice supports superior quantum coherence and adjustable interactions via spin-orbit coupling, thus presenting a powerful spin model realization. Lett. Dr. Kennedy,1 Tobias Bothwell,1 Dhruv Kedar,1 Dan G. This improves upon the previous evaluation of the JILA SrI optical lattice clock in 2013, and we achieve a more than twenty-fold reduction. Tobias Bothw ell 1 , Colin J. Bodine 1, Tobias Bothwell 2, Samuel M. 08773 [physics. The result lists from Garry Bjorklund Half Marathon on June 17, 2023. Discrimination and Harassment Policy and Procedures. Edward Marti, Andrei Derevianko, and Jun Ye Phys. Edward Marti,1,2 Andrei Derevianko,3 and Jun Ye1 1JILA, National Institute of Standards and Technology and. An optical lattice clock based onTobias Bothwell is a Postdoctoral Researcher at National Institute of Standards and Technology based in Gaithersburg, Maryland. Arrays of neutral atoms in optical tweezers [37] are rapidly emerging as a leading platform for myriad quantum science applications ranging from. 0x10-18 | Find, read and cite all the research you need. et al. Tobias Bothwell, fisikawan di NIST dan salah satu penulis makalah tahun 2022 yang diterbitkan di jurnal Nature menjelaskan eksperimen tersebut. Matei, 2 Thomas Legero, 2 Uwe Sterr, 2 Fritz Riehle, 2 Holly Leopardi, 3 Tara M. Q: What are your physics/science interests? I am interested in quantum computing but am still exploring different areas of physics. UW Mentor (s): Boris Blinov. Weston L Bromley. Online Race Results hosts marathon, half-marathon, 10K, 5K, and triathlon results. , 2022. M. Irving Dai Institution: Harvard University Major(s): Pure Mathematics, Physics Career Goal: Ph. He also has a career high. Edward Marti, Andrei Derevianko and Jun Ye, 12 November 2020, Physical Review Letters. Bothwell, D. Robinson 1, Tobias Bothwell 1, Dhruv Kedar 1, William R. Abstract: The pursuit of ever improving accuracy and precision in atomic clocks is inextricably linked to discovery. et al. Robinson, Eric Oelker, Alexander Staron & Jun Ye, 16 February 2022, Nature. Related: Tobias Bothwell, Resolving the gravitational redshift in a millimeter-scale atomic sample, Nature (2022). Louis Blues, and Hartford Whalers, and several AHL teams. 00001: A Wannier-Stark Optical Lattice Clock with Extended Coherence Times Invited Speaker: Tobias Bothwell Tuesday, June 6, 2023Tobias Bothwell is 32 years old and was born on 01/01/1991. JILA. Mathias Bellaiche of Fayetteville and Tobias Bothwell of Oklahoma City are among 271 students in the nation to be named as Goldwater Scholars. Quantum mechanical superexchange interactions form the basis of quantum magnetism in strongly correlated electronic media. edu Receiv,vised 29 August 2019 Accepted for publication 2 September 2019 Published 10 October 2019 Aact We report on an improved systematic ev, achieving a nearly identical uncertainty compared to the previous strontium record set by the JILA SrII optical lattice clock at 2. E. Home Institution: University of Arkansas. DOI: 10. We probe the superexchange interactions by first preparing two atomic spin states of 87 Rb in an antiferromagnetic order and then recording the time evolution of the spins of neighboring atoms in isolated double-well potentials (25–27) for weak to strong tunnel couplings. 201302;highest performance atomic clocks ever, they announced Feb. et al. view more. We do so by combining the best ultrastable lasers in the world with our carefully controlled 1D strontium optical lattice clock. Einstein’s theory of general relativity states that clocks at. He is also a lecturer and adjoint professor at the University of Colorado Boulder, and a senior investigator in Q-S. Request PDF | On Sep 2, 2019, Tobias Bothwell and others published JILA SrI optical lattice clock with uncertainty of 2. Bromley2 ;4, Jwo-Sy Chen 15 6, Jean-Daniel Deschenesˆ 7, Scott A. (Aug 20, 2020) Published in: Phys. Researchers use precise clocks and an extremely stable optical cavity to find new constraints on how the dilaton, a hypothesized dark matter particle, interacts with ordinary matter. 4 MB. More information: Tobias Bothwell et al, Resolving the gravitational redshift within a millimeter atomic sample. " Nature 602. Milner W. Both Bothwell and Kennedy are honored with a gold medal for this award, and were cited for. 08773 • DOI: 10. et al. Demonstration of a Timescale Based on a Stable Optical Carrier William R. 7851 (2021): 564-569. Einstein's theory of general relativity. Tobias Bothwell (JILA, University of Colorado - Boulder) Dhruv Kedar (JILA, University of Colorado - Boulder) Jun Ye (JILA, University of Colorado - Boulder) The long term stability of optical local oscillators is of wide scientific interest, from studies of dark matter to applications in time scales. . The researchers use a cloud of ultracold strontium atoms, effectively. Lett. The clock is so precise that when the scientists divided. et al. , J. Rev. A locked padlock) or means you’ve safely connected to the . “The more marks you have, the finer the increments, the better you can measure. T. An official website of the United States government. For dominating on-site interactions over the tunnel coupling between lattice. Experimental Constraint on Axionlike Particles over Seven Orders of Magnitude in Mass #25. Tobias Bothwell (National Institute of Standards and Technology, Boulder) (invited) Resolving the Gravitational Redshift Within a Wannier-Stark Optical Lattice Clock: 11:30 am - 12:00 pm: Hayden McGuinness (Sandia. Tobias Bothwell (JILA, Boulder), Dhruv Kedar (JILA, Boulder) et al. Existing timescales, including those incorporating optical frequency standards, rely. Nature. Foucault and others published Systematic Effects in Strontium Optical. ; Deschênes, Jean Daniel; Khader, Isaac H. Tobias Bothwell. gov. bothwell@nist. Our result is enabled by improving the fractional frequency measurement uncertainty by more than a factor of 10, now reaching 7. Download the PDF 49. 1103/PhysRevLett. C. Fortier, 3 Jeffrey A. We perform absolute measurement of the 27 Al + single-ion and 87 Sr neutral lattice clock frequencies at the National Institute of Standards and Technology and JILA at the University of Colorado against a global ensemble of primary frequency standards. Tobias Bothwell (JILA, Boulder), Dhruv Kedar (JILA, Boulder) et al. Kedar, D. Robinson, Eric Oelker, Alexander Staron, Jun Ye. Discrimination and Harassment Policy and Procedures. Bromley. Presenting Author: Tobias Bothwell, National Institute of Standards and Technology, Boulder. Barber and Matthew L. Pricing and ordering. Matei, T. , Degenerate Polar Molecules With Controlled Interactions And Reactivity, University of Colorado Boulder, 2022. Search for more papers by this author. JILA, National Institute of Standards and Technology and University of Colorado: Boulder, CO, US. 0 \times 10^{-18}$, by Tobias Bothwell and 7 other authors Reference: “Precision Metrology Meets Cosmology: Improved Constraints on Ultralight Dark Matter from Atom-Cavity Frequency Comparisons” by Colin J. Colin J. 1038/s41586-021-04349-7; JOURNAL. E02 Invited Live Streamed Deborah Jin Award for Outstanding Doctoral Thesis Research in Atomic, Molecular, or Optical Physics Session. Doug Arno, D. JILA endorses the six University nodes' policies for ensuring harassment-free environments. Tobias Bothwell1 , Colin J. By leveraging. Robinson , Sarah L. Quantum state control has been vital to recent advances. et al. et al. We do so by combining the best ultrastable lasers in the world with our carefully controlled 1D strontium. Diddams1;5, Robert J. Bothwell et al. John H Gordon. In free fall, counterpropagating laser beams in the cavity manipulate the. Trending Now. The phone number. 0 × 10 −18. Matei,2 Thomas Legero,2 Uwe Sterr,2 Fritz Riehle,2 Holly Leopardi,3 Tara M. Contributors : Alexander Aeppli; Anjun Chu; Tobias Bothwell; Colin J. G. The. ; Swann, William C. Review for this journal. Former JILA Researchers Tobias Bothwell and Colin Kennedy receive the 2022 PML Distinguished Associate Award. John M Robinson. They used optical light to trap. of Physics, University of Colorado Boulder) Colin J Kennedy (JILA, NIST and Dept. Previous affiliations of Tobias Bothwell include National Institute of Standards and Technology. Peiru He. 08773 [physics. Kennedy 1,2, Alex ander Aeppli 1, D hruv Kedar 1, John M. 00002: Enhanced Differential Stability Measurements with a Multiplexed Strontium Optical Lattice Clock Jonathan C Dolde, Xin Zheng, Varun Lochab, Brett N Merriman, Haoran Li, Shimon Kolkowitz : Thursday, June 3, 2021 10:54AM - 11:06AM LiveTobias Bothwell 1, Dhruv Kedar , Eric Oelker1, John M. Kennedy1, Dhruv Kedar1, Peiru He1,2, Ana Maria Rey1,2*, Jun Ye1* Engineering a Hamiltonian system with tunable interactions provides opportunities to optimize performance for quantum sensing and explore emerging phenomena of many-body systems. This heralds a new regime of clock. Brewer1;3, Sarah L. Here we report a new operational regime for 1D OLCs, both resolving the gravitational redshift across our atomic sample and synchronously measuring a fractional frequency uncertainty of 7. Mar 15, 2023 |. bothwell@colorado. In this week’s issue, Tobias Bothwell, Jun Ye and their colleagues demonstrate this effect at a sub-millimetre scale. Ongoing. William Fulbright College of Arts and Sciences and. , J. e-mail: tobias. ORCID provides an identifier for individuals to use with their name as they engage in research, scholarship, and innovation activities. colorado. Tobias Bothwell [. They used optical light to trap these into a vertical stack 1 millimetre high. “Think of a ruler,” lead author Dr. With each new decade we gain deeper insight into nature, probing ever smaller energy scales. -Recent citations Ultraprecision quantum sensing and measurement based on nonlinear hybrid optomechanical systems. Jezreal Apple. Kennedy • e-Print: 2201. Here we report a new operational regime for 1D OLCs, both resolving the gravitational redshift across our atomic sample and synchronously William R Milner 1 , John M Robinson 1 , Colin J Kennedy 1 , Tobias Bothwell 1 , Dhruv Kedar 1 , Dan G Matei 2 , Thomas Legero 2 , Uwe Sterr 2 , Fritz Riehle 2 , Holly Leopardi 3 , Tara M Fortier 3 , Jeffrey A Sherman 3 , Judah Levine 3 , Jian Yao 3 , Jun Ye 1 , Eric Oelker 1 JILA SrI optical lattice clock with uncertainty of 2. DOI: 10. Steve Roodman 1 , Marcella Bothwell, Joseph D Tobias. Created April 27, 2023, Updated July 3, 2023 HEADQUARTERS 100 [email protected]/s41586-022-05479-2. Tobias Bothwell 1,3 5, Dhruv Kedar1,3, Eric Oelker , John M Robinson , Sarah L Bromley 1,4, Weston L Tew 2, Jun Ye and Colin J Kennedy 1 JILA, National Institute of Standards and Technology and. Fortier,3 Jeffrey A. . gov (303) 497-3411 Neutral Atom Optical Clocks Group. We report on the direct measurement of superexchange interactions with ult. Kennedy. 01052. As a member of the Sr1 group I work on pushing the frontiers of accuracy and precision. Kennedy, 1 Tobias Bothwell, 1 Dhruv Kedar, 1 Dan G. In this week’s issue, Tobias Bothwell, Jun Ye and their colleagues demonstrate this effect at a sub-millimetre scale. Fellow of JILA Fellow of NIST Professor Adjoint, Department of Physics. Email: Charles. Overview. Robinson 1, Eric Oelker 1,3, Alexander Staron 1, and Jun Ye 1,*Inside Ye's new clock are 100,000 strontium atoms, layered on top of each other like a stack of pancakes, in total about a millimeter high. , Nat. reference search 10 citations. . Three recent graduates – Tobias Bothwell, Preston Scrape, and Michael Wyssman; three graduate students – Stephen Bauman, Gage Greening, and Kayla Skinner; and one undergraduate student – Michaela Mertz – received honorable mentions. Nature Email: tobias. Clocks operating at optical frequencies have now. Matei, T. Lett. Nature 2023-02-02 | Journal article DOI: 10. Jeff works to maintain and improve NIST systems that produce and distribute official U. ” Cynthia J Bothwell was born in December, 1961 and is 61 years old now. Authors: Kyungtae Kim, Alexander Aeppli, Tobias Bothwell, Jun Ye Download a PDF of the paper titled Evaluation of lattice light shift at low 10$^{-19}$ uncertainty for a shallow lattice Sr optical clock, by Kyungtae Kim and 3 other authors Tobias Bothwell 1,*, Col in J. Kennedy, T. Robinson, Eric Oelker, Alexander Staron, Jun Ye. Images should be at least 640×320px (1280×640px for best display). Robinson, Sarah L. We present a systematic evaluation of the lattice light shift, a necessary next step for establishing this system as. Demonstration of a Timescale Based on a Stable Optical Carrier William R. Imaging optical frequencies with 100 μHz precision and 1. Fisikawan NIST lainnya, Tobias Bothwell, mengatakan, proses penghitungan kecepatan waktu berjalan berdasarkan jaraknya dari permukaan Bumi atau besarnya gravitasi yang dialami benda itu bukanlah perhitungan biasa. bothwell@nist. UNIVERSITY. Rev. JILA, National Institute of Standards and Technology and University of ColoradoWilliam R Milner 1 , John M Robinson 1 , Colin J Kennedy 1 , Tobias Bothwell 1 , Dhruv Kedar 1 , Dan G Matei 2 , Thomas Legero 2 , Uwe Sterr 2 , Fritz Riehle 2 , Holly Leopardi 3 , Tara M Fortier 3 , Jeffrey A Sherman 3 , Judah Levine 3 , Jian Yao 3 , Jun Ye 1 , Eric Oelker 1JILA SrI optical lattice clock with uncertainty of 2. Science Advances 8 (41), eadc9242, 2022. As illustrated on the cover, the atoms are trapped in pancake-like optical traps and then interrogated by a laser. Tobias Bothwell. Room: Ballroom 111 A Chair: Wes Campbell, UCLA. Presenting Author: Tobias Bothwell, National Institute of Standards and Technology, Boulder. Robinson, C. Dhruv Kedar. Robinson,1 Colin J. Both students are juniors in the J. A Aeppli, A Chu, T Bothwell, CJ Kennedy, D Kedar, P He, AM Rey, J Ye. , J. Sc Honors Pure Physics, Concordia University, Montreal, Quebec, 1994-1998 (Summa Cum Laude) Dr. Yang and Dejun Qi and Steven D. D. 1038/s41586-021-04349-7 Corpus ID: 237940816; Resolving the gravitational redshift across a millimetre-scale atomic sample @article{Bothwell2021ResolvingTG, title={Resolving the gravitational redshift across a millimetre-scale atomic sample}, author={Tobias Bothwell and Colin J. bothwell [at] nist. Kennedy1,2. I walked in and he was very welcoming and explained all of his beers. edit [21] High precision spectroscopy of strontium in an optical lattice: Towards a new standard for frequency and time. Ackerman and James Kevin Schoelz and Tobias Bothwell and Salvador Barraza‐Lopez and Laurent Bellaiche and. The researchers use a cloud of ultracold strontium atoms, effectively creating a series of atomic clocks. 9 x 10-18 for the aluminum-27 and ytterbium-171. reference search 88 citations. Name: Dan Garland, State: OK, City: Oklahoma City, Zip Code: 73170 and more informationTobias Bothwell [. Phys. Institute for Quantum Information and Matter (IQIM), California Institute of Technology, Pasadena, CA 91125, USA. Demonstration of a Timescale Based on a Stable Optical Carrier William R. The researchers use a cloud of ultracold strontium atoms, effectively creating a series of atomic clocks. Tobias also answers to Tobias Bradly Bothwell, and perhaps a couple of other names. 6 × 10 −21. " Resolving the gravitational redshift across a millimetre-scale atomic sample ," Nature, Nature, vol. Edward Marti,1,2 Andrei Derevianko,3 and Jun Ye1 1JILA, National Institute of Standards and Technology and University of Colorado, Boulder, CO 80309-0440 2Department of Molecular and Cellular Physiology, Tobias Bothwell (University of Colorado, Boulder) Ever improving precision and accuracy in atomic clocks are inextricably linked to discovery, with each new decade exploring smaller energy scales. 00081: Towards spin-squeezed metrology with a strontium optical lattice clock Maya Miklos, John M Robinson, Yee Ming Tso, Josephine Meyer, Colin J Kennedy, Tobias Bothwell, James K Thompson, Jun YeTobias Bothwell has filed for patents to protect the following inventions. Contributors : Alexander Aeppli; Anjun Chu; Tobias Bothwell; Colin J. Tobias Bothwell (University of Colorado, Boulder) Colin J Kennedy (Quantinuum) John M Robinson (University of Colorado, Boulder) Jun Ye (University of Colorado, Boulder) We report on the experimental progress of the JILA strontium 1D optical lattice clock. Crystalline optical cavity at 4 K with thermal noise limited instability and ultralow drift #11. We report on an improved systematic evaluation of the JILA SrI optical lattice clock, achieving a nearly identical uncertainty compared to the previous strontium record set by the JILA. Abstract: Building scalable quantum systems that demonstrate genuine performance enhancement based on entanglement is a major scientific goal for fields including computing, networking, simulations, and metrology. Several hundreds of thousands of nuclear spin-polarized fermionic 87 Sr atoms are cooled via standard techniques and loaded into a vertical 1D optical lattice that defines the Z ^ axis (). 602 (7897), pages 420-424, February. A novel nanofiber technique shows that the evolution of light inside an asymmetric microcavity is engineered by regular orbits and two distinct evolution pathways emerge: regular-chaotic and pure-chaotic channels. Anesthesiology. Bothwell, D. Milner, John M. Wei is one of the hardest working and most dedicated people I1 Resolving the gravitational redshift within a millimeter atomic sample Tobias Bothwell1,*, Colin J. Edward Marti,1,2 Andrei Derevianko,3 and Jun Ye 1 1JILA, National Institute of Standards and Technology. M. Tobias Bothwell; Jun Ye; A Wannier-Stark optical lattice clock has demonstrated unprecedented measurement precision for optical atomic clocks. Robinson, C. Robinson, Tobias Bothwell, Dhruv Kedar, 1William R. G. Lett. An advance in frequency ratio measurements lays the groundwork for future networks of mobile, airborne and remote optical clocks that will be used to test physical laws, perform relativistic geodesy and substantially improve international timekeeping. Resolving the gravitational redshift across a millimetre-scale atomic. In an article published last week in Nature, Tobias Bothwell and collaborators reported having measured the dilation of time—a general relativity prediction— due to gravity in atomic clocks at an unprecedented small scale. PHYSICAL REVIEW RESEARCH 2, 033395 (2020) FIG. Kennedy. Fellow of JILA Fellow of NIST Professor Adjoint, Department of Physics. Using an atomic clock to demonstrate general relativity October 20 2021, by Bob Yirka Credit: Pixabay/CC0 Public Domain A team of researchers at the JILA, National Institute of Standards andWe perform absolute measurement of the 27 Al + single-ion and 87 Sr neutral lattice clock frequencies at the National Institute of Standards and Technology and JILA at the University of Colorado against a global ensemble of primary frequency standards. Bodine,The analysis indicates that this timescale is capable of reaching a stability below 1×10^{-17} after a few months of averaging, making timekeeping at the 10^{-18} level a realistic prospect. arXiv:2109. in Mathematics. Bothwell, T. The tremendous challenge arises from the fragility of. Bice C. Present address: Tech-X Corporation, Boulder, CO 80303, USA. 5 × 10−17 through anti. Milner,1, John M. Tobias Bothwell (JILA, Boulder), Dhruv Kedar (JILA, Boulder) et al. Authors: Tobias Bothwell, Dhruv Kedar, Eric Oelker, John M. Sarah Bromley Current Affiliation: Durham University, Department of Physics . By encoding the electronic orbital degree of. Age 31 · Oklahoma City, OK . R. In this week’s issue, Tobias Bothwell, Jun Ye and their colleagues demonstrate this effect at a sub-millimetre scale. Physics. 0 × 10 −18. Setzer, Megan Ivory, Michael Gehl, Nicholas Karl, Nicholas Boynton, Raymond. 1992-09-01 to 1997-05-15 | PhD in Physics (JILA and Department of Physics) Education. 1046/j. walker-thesis. atom-ph] pdf cite claim. In this week’s issue, Tobias Bothwell, Jun Ye and their colleagues demonstrate this effect at a sub-millimetre scale. System in consideration. Kennedy, Tobias Bothwell, Dhruv Kedar, Dan G. Alexander Aeppli, Anjun Chu, Tobias Bothwell. SandboxAQ Wins Pentagon Contract to Probe Quantum ThreatsInventors: Jun Ye, Eric G. atom-ph] pdf cite claim. 2003. Created February 26, 2019, Updated April 7, 2023. Leopardi, and T. Robinson, Tobias Bothwell, Dhruv Kedar, William R. Tew, Jun Ye, Colin J. bothwell@colorado. 1126/sciadv. of Physics, University of Colorado Boulder) Dhruv Kedar (JILA, NIST and Dept. Tobias Bothwell Current Affiliation: NIST Boulder campus . Kedar, +5 authors. Kennedy, Eric Oelker, John M. His projects aim at developing and improving optical clocks using quantum metrology techniques. Tobias Bothwell (University of Colorado, Boulder) Ever improving precision and accuracy in atomic clocks are inextricably linked to discovery, with each new decade exploring smaller energy scales. Und Jones. “We haven’t done it between independent clocks yet,” says Tobias Bothwell, the study’s lead author. Authors: Kyungtae Kim, Alexander Aeppli, Tobias Bothwell, Jun Ye Download a PDF of the paper titled Evaluation of lattice light shift at mid 10$^{-19}$ uncertainty for a shallow lattice Sr optical clock, by Kyungtae Kim and 3 other authorsTobias Bothwell Jun Ye Engineering a Hamiltonian system with tunable interactions provides opportunities to optimize performance for quantum sensing and explore emerging phenomena of many-body. 14694 [physics. The interplay of magnetic exchange interactions and tunneling underlies many complex quantum phenomena observed in real materials. 6 ), 87 Sr (ref. We use frequency comb-based optical two-way time-frequency transfer (O-TWTFT) to measure the optical frequency ratio of state-of-the-art ytterbium and strontium optical. Tobias Bothwell recently joined Sr1, and I am sure he will continue Sr1’s tradition of success. Tobias calls Boulder, CO, home. Robinson, C. tobias. . Group Alumni have gone to pursue graduate studies at Cornell University (Erin Farmer), The University of Washington (James Sloan), The University of Colorado (Tobias Bothwell and Tyler Bishop), The University of Texas at Austin (Joseph Roll), among other places; others work at companies such as Samsung Telecommunications America (Cedric Horvath. 06 tonnes of lunar epiregolith. Tobias Bothwell's 23 research works with 1,450 citations and 6,476 reads, including: Evaluation of lattice light shift at mid 10$^{-19}$ uncertainty for a shallow lattice Sr optical. Rev. UW Mentor (s): Boris Blinov. Bothwell T. Chandrayaan-3 landing ejects 2. Created February 20, 2019, Updated April 11, 2023. pdf 3. Authors: Alexander Aeppli, Anjun Chu, Tobias Bothwell, Colin J. of Physics, University of Colorado Boulder) Ana Maria ReyHolly Leopardi, Kyle Beloy, Tobias Bothwell et al. JILA. B. ” In fact, this clock is so precise that. A Aeppli, A Chu, T Bothwell, CJ Kennedy, D Kedar, P He, AM Rey, J Ye. Bromley 2,6, Jwo-Sy. G. Science Advances. Authors: Tobias Bothwell, Dhruv Kedar, Eric Oelker, John M. Meet the REUs. "Resolving the gravitational redshift across a millimetre-scale atomic sample. 2022-10-14 | Journal article. Johanna Nyffeler’s peers at other companies are Dana Goldenberg, Tobias Bothwell, Zhe Hu, Shelby Hooe, Kenji Shimizu. Robinson, Sarah L. Rev. Bodine,JILA physicists have measured Albert Einstein's theory of general relativity, or more specifically, the effect called time dilation, at the smallest scale ever, showing that two tiny atomic clocks. Departments of *Anesthesiology, Child Health and.