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Multi-qubit entanglement and algorithms on a neutral-atom quantum computer

https://doi.org/10.1038/s41586-022-04603-6

Graham, T. M. ; Song, Y. ; Scott, J. ; Poole, C. ; Phuttitarn, L. ; Jooya, K. ; Eichler, P. ; Jiang, X. ; Marra, A. ; Grinkemeyer, B. ; et al ( April 2022 , Nature)

Free, publicly-accessible full text available April 21, 2023
Rydberg-Mediated Entanglement in a Two-Dimensional Neutral Atom Qubit Array

https://doi.org/10.1103/PhysRevLett.123.230501

Graham, T. M. ; Kwon, M. ; Grinkemeyer, B. ; Marra, Z. ; Jiang, X. ; Lichtman, M. T. ; Sun, Y. ; Ebert, M. ; Saffman, M. ( December 2019 , Physical Review Letters)

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Rydberg mediated entanglement in a two-dimensional neutral atom qubit array

Graham, TM ; Kwon, M. ; Grinkemeyer, B. ; Marra, Z. ; Jiang, X ; Lichtman, M.T. ; Sun, Y. ; Ebert, M. ; and M. Saffman, M. ( August 2019 , ArXiv.org)

We demonstrate high fidelity two-qubit Rydberg blockade and entanglement in a two-dimensional qubit array. The qubit array is defined by a grid of blue detuned lines of light with 121 sites for trapping atomic qubits. Improved experimental methods have increased the observed Bell state fidelity to FBell = 0.86(2). Accounting for errors in state preparation and measurement (SPAM) we infer a fidelity of F−SPAM Bell = 0.89. Including errors in single qubit operations we infer that the Rydberg mediated CZ gate has a fidelity of F−SPAM CZ= 0.91. Comparison with a detailed error model shows that further improvement in fidelitymore »« less

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A reconfigurable blue-detuned lattice for neutral atom quantum computing

GRAHAM, T. ; POOLE, C ; JIANG, X ; MARRA, Z ; GRINKEMEYER, B ; HICKMAN, G ; CHEREK, J ; EBERT, M ; SAFFMAN, M. ( May 2019 , DAMOP 2019)

We present recent progress towards building a neutral atom quantum computer. We use a new design for a blue-detuned optical lattice to trap single Cs atoms. The lattice is created using a combination of diffractive elements and acousto-optic deflectors (AODs) which give a reconfigurable set of cross-hatched lines. By using AODs, we can vary the number of traps and size of the trapping regions as well as eliminate extraneous traps in Talbot planes. Since this trap uses blue-detuned light, it traps both ground state atoms and atoms excited to the Rydberg state; moreover, by tuning the size of the trappingmore »« less

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Measurement of the $D^{*} (2010)^{+} − D^{+}$ Mass Difference

https://doi.org/10.1103/PhysRevLett.119.202003

Lees, J. P. ; Poireau, V. ; Tisserand, V. ; Grauges, E. ; Palano, A. ; Eigen, G. ; Brown, D. N. ; Kolomensky, Yu. G. ; Fritsch, M. ; Koch, H. ; et al ( November 2017 , Physical Review Letters)

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Measurement of the $e^{+} e^{-} \to π^{+} π^{-} π^{0} π^{0}$ cross section using initial-state radiation at BABAR

https://doi.org/10.1103/PhysRevD.96.092009

Lees, J. P. ; Poireau, V. ; Tisserand, V. ; Grauges, E. ; Palano, A. ; Eigen, G. ; Brown, D. N. ; Kolomensky, Yu. G. ; Fritsch, M. ; Koch, H. ; et al ( November 2017 , Physical Review D)

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Measurement of $\cos 2 β$ in $B^{0} \to D^{(*)} h^{0}$ with $D \to K_{S}^{0} π^{+} π^{-}$ decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data

https://doi.org/10.1103/PhysRevD.98.112012

Adachi, I. ; Adye, T. ; Ahmed, H. ; Ahn, J. K. ; Aihara, H. ; Akar, S. ; Alam, M. S. ; Albert, J. ; Anulli, F. ; Arnaud, N. ; et al ( December 2018 , Physical Review D)

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Search for Invisible Decays of a Dark Photon Produced in $e^{+} e^{-}$ Collisions at BaBar

https://doi.org/10.1103/PhysRevLett.119.131804

Lees, J. P. ; Poireau, V. ; Tisserand, V. ; Grauges, E. ; Palano, A. ; Eigen, G. ; Brown, D. N. ; Derdzinski, M. ; Giuffrida, A. ; Kolomensky, Yu. G. ; et al ( September 2017 , Physical Review Letters)

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First Evidence for $\cos 2 β > 0$ and Resolution of the Cabibbo-Kobayashi-Maskawa Quark-Mixing Unitarity Triangle Ambiguity

https://doi.org/10.1103/PhysRevLett.121.261801

Adachi, I. ; Adye, T. ; Ahmed, H. ; Ahn, J. K. ; Aihara, H. ; Akar, S. ; Alam, M. S. ; Albert, J. ; Anulli, F. ; Arnaud, N. ; et al ( December 2018 , Physical Review Letters)

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Measurement of the $e^{+} e^{-} \to K_{s}^{0} K^{\pm} π^{\mp} π^{0}$ and $K_{s}^{0} K^{\pm} π^{\mp} η$ cross sections using initial-state radiation

https://doi.org/10.1103/PhysRevD.95.092005

Lees, J. P. ; Poireau, V. ; Tisserand, V. ; Grauges, E. ; Palano, A. ; Eigen, G. ; Brown, D. N. ; Kolomensky, Yu. G. ; Fritsch, M. ; Koch, H. ; et al ( May 2017 , Physical Review D)

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