English

Researchers have demonstrated a breakthrough boson sampling method using ultracold atoms in optical lattices

1103
2024-05-10 15:55:13
See translation

JILA researcher, National Institute of Standards and Technology (NIST) physicist, physics professor Adam Kaufman and his team at the University of Colorado Boulder, as well as NIST collaborators, demonstrated a new method of cross laser beam lattice sampling using ultracold atoms for boson sampling in two-dimensional optics. This study, recently published in the journal Nature, marks a significant leap in past achievements in computer simulation or photons.



Applying optical tweezers to large-scale Hubbard systems
Researchers used cutting-edge technology, including optical tweezers and advanced cooling methods, to prepare specific patterns of up to 180 strontium atoms in a lattice of 1000 points. By minimizing the motion of atoms and ensuring they remain in the lowest energy state, the team reduced noise and decoherence, which are common challenges in quantum experiments.

Kaufman said, "Optical tweezers have achieved groundbreaking experiments in multibody physics, typically used to study interacting atoms, where atoms are fixed in space and interact over long distances." "However, when particles can both interact and tunnel, and quantum mechanics spreads in space, a fundamental class of multibody problems arises - the so-called 'Hubbard' system. In the early stages of establishing this experiment, our goal was to apply this tweezer paradigm to large-scale Hubbard systems - this article marks the first realization of this vision."

Confirm high fidelity through scaling testing
Due to the complexity of boson sampling, it is not feasible to directly verify the correct sampling task of 180 atomic experiments. To overcome this issue, researchers sampled atoms of different scales and compared the measurement results with simulations of reasonable error models involving intermediate scale experiments.

"We tested with two atoms and we have a good understanding of what is happening. Then, at an intermediate scale where we can still simulate things, we can compare our measurement results with simulations involving reasonable error models in our experiments. On a large scale, we can continuously change the difficulty of the sampling task by controlling the distinguishability of atoms and confirm that there are no major issues," said Aaron Young, the first author and former JILA graduate student.

This work demonstrates the high-quality and programmable preparation, evolution, and detection of atoms in the lattice, which can be applied to atomic interactions, opening up new methods for simulating and studying the behavior of real and poorly known quantum materials.

Source: Laser Net

Related Recommendations
  • Shanghai Institute of Optics and Mechanics has made progress in studying the structure and properties of aluminum phosphate glass

    Recently, Hu Lili, a research team of the High Power Laser Unit Technology Laboratory of the Chinese Academy of Sciences Shanghai Institute of Optics and Fine Mechanics, used a method combining experiment, molecular dynamics simulation and quantitative structure property relationship analysis (QSPR) to study aluminum phosphate glass, and the related research results were published in the Journal o...

    2023-09-15
    See translation
  • Hamamatsu Photonics completes construction of new factory area

    Recently, Hamamatsu Photonics in Japan completed the construction of a new building at Miyakoda Manufacturing Co., Ltd. in Hamami ku, Hamamatsu City. The completion ceremony was held on July 29th, and the factory will start full production in November 2024, increasing overall production capacity by 2.5 times.Source: Hamamatsu PhotonicsIt is reported that Hamamatsu Photonics focuses on the developm...

    2024-08-01
    See translation
  • The First Operation of Two Color Mode in Infrared Free Electron Laser

    The Fritz Haber Institute of the Max Planck Institute in Berlin has achieved a technological milestone. The infrared free electron laser operates in dual color mode for the first time. This globally unique technology makes it possible to conduct experiments on synchronous dual color laser pulses, opening up new possibilities for research.There are over a dozen free electron lasers worldwide, with ...

    2024-02-18
    See translation
  • TAU Systems upgrades the University of Texas desktop laser to a peak power of 40 terawatts

    TAU Systems, a manufacturer of ultra fast compact laser plasma accelerators, announced today that it has successfully upgraded the existing desktop terawatt laser (UT 3) at the University of Texas to a new and improved performance that provides power for compact particle accelerators. The upgraded UT 3 driver laser can now generate ultra short pulses with a peak power of 40 terawatts.This upgrade ...

    2023-08-21
    See translation
  • Research on High Strength and High Toughness TC11 Titanium Alloy with Multi Laser Coaxial Wire Feeding and Directed Energy Deposition

    Researchers from Huazhong University of Science and Technology, AVIC Xi'an Aircraft Design and Research Institute, AVIC Xi'an Aircraft Industry Group Co., Ltd., Shanghai Aerospace Equipment Manufacturing General Factory Co., Ltd., State Key Laboratory of Aircraft Control Integration Technology, Beijing Xinghang Electromechanical Equipment Co., Ltd. and Nanjing Yingigma Automation Co., Ltd. reporte...

    05-14
    See translation