Dipole-Dipole Frequency Shifts in Multilevel Atoms

Published on Jun 30, 2021in arXiv: Quantum Gases
· DOI :10.1103/PHYSREVLETT.127.013401
A. Cidrim5
Estimated H-index: 5
,
A. Piñeiro Orioli2
Estimated H-index: 2
+ 4 AuthorsAna Maria Rey62
Estimated H-index: 62
Sources
Abstract
Dipole-dipole interactions lead to frequency shifts that are expected to limit the performance of next-generation atomic clocks. In this work, we compute dipolar frequency shifts accounting for the intrinsic atomic multilevel structure in standard Ramsey spectroscopy. When interrogating the transitions featuring the smallest Clebsch-Gordan coefficients, we find that a simplified two-level treatment becomes inappropriate, even in the presence of large Zeeman shifts. For these cases, we show a net suppression of dipolar frequency shifts and the emergence of dominant non-classical effects for experimentally relevant parameters. Our findings are pertinent to current generations of optical lattice and optical tweezer clocks, opening a way to further increase their current accuracy, and thus their potential to probe fundamental and many-body physics.
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#2Nils Huntemann (German National Metrology Institute)H-Index: 17
Last. Ekkehard Peik (German National Metrology Institute)H-Index: 38
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We compare two optical clocks based on the {^{2}S}_{1/2}(F=0)\ensuremath{\rightarrow}{^{2}D}_{3/2}(F=2)electric quadrupole (E2) and the {^{2}S}_{1/2}(F=0)\ensuremath{\rightarrow}{^{2}F}_{7/2}(F=3)electric octupole (E3) transition of {^{171}\mathrm{Yb}}^{+}and measure the frequency ratio {\ensuremath{\nu}}_{\mathrm{E}3}/{\ensuremath{\nu}}_{\mathrm{E}2}=0.932829404530965376(32) improving upon previous measurements by an order of magnitude. Using two caesium fountain clocks, we find ${\...
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#1Aaron YoungH-Index: 5
#2William J. EcknerH-Index: 4
Last. Adam KaufmanH-Index: 21
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The preparation of large, low-entropy, highly coherent ensembles of identical quantum systems is fundamental for many studies in quantum metrology1, simulation2 and information3. However, the simultaneous realization of these properties remains a central challenge in quantum science across atomic and condensed-matter systems2,4-7. Here we leverage the favourable properties of tweezer-trapped alkaline-earth (strontium-88) atoms8-10, and introduce a hybrid approach to tailoring optical potentials ...
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#1Colin KennedyH-Index: 10
#2Eric Oelker (NIST: National Institute of Standards and Technology)H-Index: 70
Last. Jun YeH-Index: 126
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We conduct frequency comparisons between a state-of-the-art strontium optical lattice clock, a cryogenic crystalline silicon cavity, and a hydrogen maser to set new bounds on the coupling of ultralight dark matter to standard model particles and fields in the mass range of 10^{-16}-10^{-21} eV. The key advantage of this two-part ratio comparison is the differential sensitivity to time variation of both the fine-structure constant and the electron mass, achieving a substantially improved limit on...
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#1Lindsay Sonderhouse (CU: University of Colorado Boulder)H-Index: 12
#2Christian Sanner (CU: University of Colorado Boulder)H-Index: 19
Last. Jun Ye (CU: University of Colorado Boulder)H-Index: 126
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Many-body quantum systems can exhibit a striking degree of symmetry unparallelled in their classical counterparts. In real materials SU(N) symmetry is an idealization, but this symmetry is pristinely realized in fully controllable ultracold alkaline-earth atomic gases. Here, we study an SU(N)-symmetric Fermi liquid of 87Sr atoms, where N can be tuned to be as large as 10. In the deeply degenerate regime, we show through precise measurements of density fluctuations and expansion dynamics that the...
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#1Florian Schäfer (Kyoto University)H-Index: 4
#2Takeshi Fukuhara (Global Alliance in Management Education)H-Index: 17
Last. Yoshiro Takahashi (Kyoto University)H-Index: 39
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After many years of development of the basic tools, quantum simulation with ultracold atoms has now reached the level of maturity at which it can be used to investigate complex quantum processes. Planning of new experiments and upgrading of existing set-ups requires a broad overview of the available techniques, their specific advantages and limitations. This Technical Review aims to provide a comprehensive compendium of the state of the art. We discuss the basic principles, the available techniq...
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#2Annie Jihyun Park (MPG: Max Planck Society)H-Index: 3
Last. Marianna Safronova (UD: University of Delaware)H-Index: 44
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We demonstrate state-dependent optical lattices for the Sr optical qubit at the tune-out wavelength for its ground state. We tightly trap excited state atoms while suppressing the effect of the lattice on ground state atoms by more than 4 orders of magnitude. This highly independent control over the qubit states removes inelastic excited state collisions as the main obstacle for quantum simulation and computation schemes based on the Sr optical qubit. Our results also reveal large discrepancies ...
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#1Aaron YoungH-Index: 5
#2William J. EcknerH-Index: 4
Last. Adam KaufmanH-Index: 21
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The preparation of large, low entropy, highly coherent ensembles of identical quantum systems is foundational for many studies in quantum metrology, simulation, and information. Here, we realize these features by leveraging the favorable properties of tweezer-trapped alkaline-earth atoms while introducing a new, hybrid approach to tailoring optical potentials that balances scalability, high-fidelity state preparation, site-resolved readout, and preservation of atomic coherence. With this approac...
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#1A. Piñeiro Orioli (NIST: National Institute of Standards and Technology)H-Index: 2
#2Ana Maria Rey (NIST: National Institute of Standards and Technology)H-Index: 62
We investigate the subradiance properties of n\geq 2multilevel fermionic atoms loaded into the lowest motional level of a single trap (e.g.~a single optical lattice site or an optical tweezer). As pointed out in our previous work [arXiv:1907.05541], perfectly dark subradiant states emerge from the interplay between fermionic statistics and dipolar interactions. While in [arXiv:1907.05541] we focused on the n=2case, here we provide an in-depth analysis of the single-site dark states for gen...
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#2Yinan HuangH-Index: 1
Last. Zhenhua Yu (SYSU: Sun Yat-sen University)H-Index: 5
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Recent realisation of three-dimensional optical lattice clocks circumvents short range collisional clock shifts which have been the bottle neck towards higher precision; the long range electronic dipole-dipole interaction between the atoms becomes the primary source of clock shift due to interatomic interactions. We study the Rabi spectroscopy of three-dimensional optical lattice clocks with unity filling. From the Lindblad equation governing the time evolution of the density matrix of the atoms...
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#1Ana Asenjo-Garcia (Columbia University)H-Index: 16
#2H. J. Kimble (California Institute of Technology)H-Index: 59
Last. Darrick E. ChangH-Index: 20
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The optical properties of sub-wavelength arrays of atoms or other quantum emitters have attracted significant interest recently. For example, the strong constructive or destructive interference of emitted light enables arrays to function as nearly perfect mirrors, support topological edge states, and allow for exponentially better quantum memories. In these proposals, the assumed atomic structure was simple, consisting of a unique electronic ground state. Within linear optics, the system is then...
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#1V. I. YudinH-Index: 11
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We develop the theory of propagation of laser wave in a gas of two-level atoms (with an optical transition frequency \omega^{}_0 under the condition of inhomogeneous Doppler broadening, considering the self-consistent solution of the Maxwell-Bloch equations in the mean-field approximation and for one-atomic density matrix. The nonlinear effects in the atomic density n caused by the free motion of atoms, are found. These effects distort the lineshape (shift, asymmetry, broadening), but are ...
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