Emergence of multi-body interactions in a fermionic lattice clock

Goban, Akihisa; Hutson, Ross B.; Marti, G. Edward; Campbell, Scott; Perlin, Michael A.; Julienne, Paul S.; D'Incao, Jose; Rey, Ana María; Ye, J.

doi:10.1038/s41586-018-0661-6

Cited by 102 publications

(106 citation statements)

References 32 publications

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“…In this case, multiple occupation of a single nuclear spin state on any given lattice site is initially forbidden by fermionic statistics. Subsequent violation of this condition cannot occur in the absence of inter-site effects or hyperfine coupling between nuclear spin states, as is the case of the experiment in [34].…”

Section: Background and Overviewmentioning

confidence: 90%

“…Although an external trapping potential will generally break discrete translational symmetry of the lattice, any background inhomogeneity can be made negligible by spectroscopically addressing a sufficiently small region of the lattice [34]. Throughout this paper, we work strictly in the deep-lattice regime with negligible tunneling between lattice sites.…”

Section: Background and Overviewmentioning

confidence: 99%

“…This assumption applies for any experimental protocol in which all atoms are initially prepared in their orbital and motional ground states (as e.g. in [34]). In this case, multiple occupation of a single nuclear spin state on any given lattice site is initially forbidden by fermionic statistics.…”

Section: Background and Overviewmentioning

confidence: 99%

“…Identifying peaks in excitation spectra such as in figure 3 constitutes a measurement of many-body excitation energies, which was performed in [34] to detect signatures of effective multi-body interactions. Figure 4 shows a comparison between (i) experimental measurements of the many-body excitation energies D NX for all Î´+ -…”

Section: Experimental Signatures and Comparisonmentioning

confidence: 99%

“…Some past work has detected experimental signatures of multi-body interactions in the form of quantum phase revivals [38]. We instead compare the many-body interaction energies predicted by our low-energy effective theory to the experimental measurements of the density-dependent orbital excitation spectra performed in [34], similarly to the measurements with bosons performed in [39]. To facilitate this comparison of excitation spectra and to characterize the low-lying excitations in our effective theory, we consider a restriction of our theory to states with at most one orbital excitation per lattice site.…”

Section: Introductionmentioning

confidence: 98%

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Effective multi-body SU(N)-symmetric interactions of ultracold fermionic atoms on a 3D lattice

Perlin

Rey

2019

New J. Phys.

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Rapid advancements in the experimental capabilities with ultracold alkaline-earth-like atoms (AEAs) bring to a surprisingly near term the prospect of performing quantum simulations of spin models and lattice field theories exhibiting SU(N) symmetry. Motivated in particular by recent experiments preparing high density samples of strongly interacting 87 Sr atoms in a three-dimensional optical lattice, we develop a low-energy effective theory of fermionic AEAs which exhibits emergent multibody SU(N)-symmetric interactions, where N is the number of atomic nuclear spin levels. Our theory is limited to the experimental regime of (i) a deep lattice, with (ii) at most one atom occupying each nuclear spin state on any lattice site. The latter restriction is a consequence of initial ground-state preparation. We fully characterize the low-lying excitations in our effective theory, and compare predictions of many-body interaction energies with direct measurements of many-body excitation spectra in an optical lattice clock. Our work makes the first step in enabling a controlled, bottom-up experimental investigation of multi-body SU(N) physics. 1 0 and P 3 0 states, AEAs exhibit decoupled orbital and OPEN ACCESS RECEIVED

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Section: Background and Overviewmentioning

confidence: 90%

Section: Background and Overviewmentioning

confidence: 99%

Section: Background and Overviewmentioning

confidence: 99%

Section: Experimental Signatures and Comparisonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Effective multi-body SU(N)-symmetric interactions of ultracold fermionic atoms on a 3D lattice

Perlin

Rey

2019

New J. Phys.

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Fast and Scalable Quantum Information Processing with Two‐Electron Atoms in Optical Tweezer Arrays

2019

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Atomic systems, ranging from trapped ions to ultracold and Rydberg atoms, offer unprecedented control over both internal and external degrees of freedom at the single-particle level. They are considered among the foremost candidates for realizing quantum simulation and computation platforms that can outperform classical computers at specific tasks. In this work, a realistic experimental toolbox for quantum information processing with neutral alkaline-earth-like atoms in optical tweezer arrays is described. In particular, a comprehensive and scalable architecture based on a programmable array of alkaline-earth-like atoms is proposed, exploiting their electronic clock states as a precise and robust auxiliary degree of freedom, and thus allowing for efficient all-optical one-and two-qubit operations between nuclear spin qubits. The proposed platform promises excellent performance thanks to high-fidelity register initialization, rapid spin-exchange gates, and error detection in read-out. As a benchmark and application example, the expected fidelity of an increasing number of subsequent SWAP gates for optimal parameters is computed, which can be used to distribute entanglement between remote atoms within the array.

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Realization of highly isolated stable few-spin systems based on alkaline-earth fermions

et al. 2023

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Emergence of multi-body interactions in a fermionic lattice clock

Cited by 102 publications

References 32 publications

Effective multi-body SU(N)-symmetric interactions of ultracold fermionic atoms on a 3D lattice

Effective multi-body SU(N)-symmetric interactions of ultracold fermionic atoms on a 3D lattice

Fast and Scalable Quantum Information Processing with Two‐Electron Atoms in Optical Tweezer Arrays

Realization of highly isolated stable few-spin systems based on alkaline-earth fermions

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