scholarly journals Scalable Cold-Atom Quantum Simulator for Two-Dimensional QED

2021 ◽  
Vol 127 (13) ◽  
Author(s):  
R. Ott ◽  
T. V. Zache ◽  
F. Jendrzejewski ◽  
J. Berges
Keyword(s):  
Cold Atom ◽  
Two Dimensional ◽  
Quantum Simulator

scholarly journals Cooling and entangling ultracold atoms in optical lattices

Science ◽  
2020 ◽  
Vol 369 (6503) ◽  
pp. 550-553 ◽  
Author(s):  
Bing Yang ◽  
Hui Sun ◽  
Chun-Jiong Huang ◽  
Han-Yi Wang ◽  
Youjin Deng ◽  
...  
Keyword(s):  
Large Scale ◽  
Thermal Fluctuations ◽  
Two Dimensional ◽  
Many Body ◽  
Quantum Phases ◽  
Atom Pairs ◽  
Speed Up ◽  
Quantum Simulator ◽  
Many Body Systems ◽  
Qubit Gate

Scalable, coherent many-body systems can enable the realization of previously unexplored quantum phases and have the potential to exponentially speed up information processing. Thermal fluctuations are negligible and quantum effects govern the behavior of such systems with extremely low temperature. We report the cooling of a quantum simulator with 10,000 atoms and mass production of high-fidelity entangled pairs. In a two-dimensional plane, we cool Mott insulator samples by immersing them into removable superfluid reservoirs, achieving an entropy per particle of 1.9−0.4+1.7×10−3kB. The atoms are then rearranged into a two-dimensional lattice free of defects. We further demonstrate a two-qubit gate with a fidelity of 0.993 ± 0.001 for entangling 1250 atom pairs. Our results offer a setting for exploring low-energy many-body phases and may enable the creation of large-scale entanglement.

scholarly journals Interference in a Prototype of a Two-Dimensional Ion Trap Array Quantum Simulator

2019 ◽  
Vol 123 (10) ◽  
Author(s):  
Frederick Hakelberg ◽  
Philip Kiefer ◽  
Matthias Wittemer ◽  
Ulrich Warring ◽  
Tobias Schaetz
Keyword(s):  
Ion Trap ◽  
Two Dimensional ◽  
Quantum Simulator

Localization Study of a Cold Atom BEC in Two-Dimensional Bessel Optical Lattices

2018 ◽  
Vol 787 ◽  
pp. 105-112
Author(s):  
Guo Zhi Tang ◽  
Yuan Ren ◽  
Zhou Wang
Keyword(s):  
Potential Energy ◽  
Stability Condition ◽  
Optical Lattices ◽  
Lagrange Equation ◽  
Cold Atom ◽  
Einstein Condensate ◽  
System Stability ◽  
Pitaevskii Equation ◽  
Two Dimensional ◽  
The Stability

In order to investigate the stability and dynamics properties of a cold atom Bose-Einstein Condensate (BEC) in two-dimensional Bessel optical lattices, the stability condition of the system is analyzed and the corresponding Gross-pitaevskii equation (GPE) is solved in this paper by time-dependent variational method and numerical simulation. Firstly, the Euler-Lagrange equation containing the parameters describing the system stability and the effective potential energy needed by the variational analysis method to analyze the system stability is obtained by using the adjustable exponent Gaussian trial wave function. Secondly, according to the analytical solution of Euler-Lagrange equation and the local minimum value of potential energy, the stability condition of the system is further illuminated. Finally, the influence mechanism of these parameters on the local dynamics is revealed by solving the corresponding GPE with numerical method.

Optimization design of two-dimensional magneto optical trap field coils for cold atom interferometer

2016 ◽  
Vol 45 (6) ◽  
pp. 0618003
Author(s):  
樊鹏格 Fan Pengge ◽  
吴易明 Wu Yiming ◽  
贾森 Jia Sen ◽  
王先华 Wang Xianhua
Keyword(s):  
Optimization Design ◽  
Optical Trap ◽  
Cold Atom ◽  
Atom Interferometer ◽  
Magneto Optical Trap ◽  
Two Dimensional ◽  
Trap Field

scholarly journals Engineered two-dimensional Ising interactions in a trapped-ion quantum simulator with hundreds of spins

Nature ◽  
2012 ◽  
Vol 484 (7395) ◽  
pp. 489-492 ◽  
Author(s):  
Joseph W. Britton ◽  
Brian C. Sawyer ◽  
Adam C. Keith ◽  
C.-C. Joseph Wang ◽  
James K. Freericks ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Trapped Ion ◽  
Quantum Simulator

scholarly journals Cold atom quantum simulator for dilute neutron matter

2019 ◽  
Vol 28 (01n02) ◽  
pp. 1930001 ◽  
Author(s):  
Munekazu Horikoshi ◽  
Makoto Kuwata-Gonokami
Keyword(s):  
Wave Scattering ◽  
Feshbach Resonance ◽  
Atomic System ◽  
Scattering Length ◽  
Cold Atom ◽  
Neutron Matter ◽  
Nuclear System ◽  
S Wave ◽  
Quantum Simulator ◽  
Universal Interaction

The internal structure of neutron stars and the physical properties of nuclei depend on the equation of state (EOS) of neutron matter. Dilute neutron matter is a quantum system of spin-1/2 Fermi particles interacting via s-wave scattering. Although a nuclear system and an ultracold atomic system have length scales and energy scales that differ by several orders of magnitude, both systems follow a common universal EOS considering their nondimensional universal interaction parameters. In this study, we determine the EOS of neutron matter in the dilute region, where the influence of the s-wave scattering length is dominant but that of the effective range is small, by utilizing a quantum simulator of ultracold 6Li atoms with Feshbach resonance.

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