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Microscopic Observation of Pauli Blocking in Degenerate Fermionic Lattice Gases

Timon Hilker, Ahmed Omran, Martin Boll +3 more

Bulletin of the American Physical SocietyMay 24, 20160 citations

Pauli blocking of light scattering in degenerate fermions

Yu‐Kun Lu, Yair Margalit, Furkan Çağrı Top +1 more

Bulletin of the American Physical SocietyJun 2, 20211 citation

Subradiance of multilevel fermionic atoms in arrays with filling n≥2

Asier Piñeiro Orioli, Ana María Rey

A detailed account of the suppression of spontaneous emission in fermionic multilevel atoms is presented. The study is particularly relevant for preparing optical lattices and tweezer arrays with long coherence times.

arXiv:1910.13100Physical Review AApr 13, 202017 citations

Dark States of Multilevel Fermionic Atoms in Doubly Filled Optical Lattices

Asier Piñeiro Orioli, Ana María Rey

We propose to use fermionic atoms with degenerate ground and excited internal levels (F_{g}→F_{e}), loaded into the motional ground state of an optical lattice with two atoms per lattice site, to realize dark states with no radiative decay. The physical mechanism behind the dark states is an interplay of Pauli blocking and multilevel dipolar interactions. The dark states are independent of lattice geometry, can support an extensive number of excitations, and can be coherently prepared using a Raman scheme taking advantage of the quantum Zeno effect. These attributes make them appealing for atomic clocks, quantum memories, and quantum information on decoherence free subspaces.We propose to use fermionic atoms with degenerate ground and excited internal levels (F_{g}→F_{e}), loaded into the motional ground state of an optical lattice with two atoms per lattice site, to realize dark states with no radiative decay. The physical mechanism behind the dark states is an interplay of Pauli blocking and multilevel dipolar interactions. The dark states are independent of lattice geometry, can support an extensive number of excitations, and can be coherently prepared using a Raman scheme taking advantage of the quantum Zeno effect. These attributes make them appealing for atomic clocks, quantum memories, and quantum information on decoherence free subspaces.

arXiv:1907.05541Physical Review LettersNov 26, 201930 citations

Pauli blocking in low-dimensional Fermi systems at finite temperatures

Francisco J. Sevilla, Mauricio Fortes, Solis

Bulletin of the American Physical SocietyMar 19, 20100 citations

Enhancing coherence by collective interactions in atom arrays

Ana Asenjo-Garcı́a, Harry J. Kimble, Darrick E. Chang

In dense and ordered atomic arrays, destructive interference in photon emission leads to the emergence of subradiant states, which are protected from radiative decay and are characterized by long lifetimes. Within linear optics, subradiant states of one-dimensional chains can be interpreted as guided modes. Collective interactions in arrays have attracted a lot of interest recently, with work showing that collective emission can be used to realize improved quantum memories [1, 2] as well as almost-perfect atomic mirrors [3, 4], among other exciting applications. While tantalizing, these ideas strongly rely on one assumption: that atoms are two-level systems and only have a unique electronic ground state. However, most atoms exhibit a rich and complex internal structure. In this talk, I will discuss the properties of subradiant states of two-level and multilevel atoms. In particular, I will present a new mechanism for subradiance and atomic wave-guiding in atoms with hyperfine structure, which crucially depends on many-body correlations, a radical departure from conventional subradiant states found in classical-dipole lattices or two-level-atom arrays [5].In dense and ordered atomic arrays, destructive interference in photon emission leads to the emergence of subradiant states, which are protected from radiative decay and are characterized by long lifetimes. Within linear optics, subradiant states of one-dimensional chains can be interpreted as guided modes. Collective interactions in arrays have attracted a lot of interest recently, with work showing that collective emission can be used to realize improved quantum memories [1, 2] as well as almost-perfect atomic mirrors [3, 4], among other exciting applications. While tantalizing, these ideas strongly rely on one assumption: that atoms are two-level systems and only have a unique electronic ground state. However, most atoms exhibit a rich and complex internal structure. In this talk, I will discuss the properties of subradiant states of two-level and multilevel atoms. In particular, I will present a new mechanism for subradiance and atomic wave-guiding in atoms with hyperfine structure, which crucially depends on many-body correlations, a radical departure from conventional subradiant states found in classical-dipole lattices or two-level-atom arrays [5].

The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meetingJan 1, 20190 citations

Subradiance and Pauli blocking in lattices of multilevel fermionic atoms

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Subradiance and Pauli blocking in lattices of multilevel fermionic atoms

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