113 citations · 167 across the 10 of their papers we have counts for
10 papers
Square-root Time Atom Reconfiguration Plan for Lattice-shaped Mobile Tweezers
Koki Aoyama, Takafumi Tomita, Fumihiko Ino
This paper proposes a scalable planning algorithm for creating defect-free atom arrays in neutral-atom systems. The algorithm generates a time plan for a…
Magnetic-field control of interactions in alkaline-earth Rydberg atoms and applications to {\it XXZ} models
Masaya Kunimi, Takafumi Tomita
We study the magnetic-field dependence of the interactions between two alkaline-earth(-like) Rydberg atoms, Sr and Yb. Considering the pair of Rydberg states $|n…
Proposal for realizing Heisenberg-type quantum-spin models in Rydberg-atom quantum simulators
Masaya Kunimi, Takafumi Tomita
We investigate the magnetic-field dependence of the interaction between two Rydberg atoms, and . In this setting, the effective s…
Generation of Motional Squeezed States for Neutral Atoms in Optical Tweezers
Vincent Lienhard, Romain Martin, Yuki Torii Chew +3
Optical tweezers are a powerful tool for the precise positioning of a variety of small objects, including single neutral atoms. Once trapped, atoms can be cooled to the motional gr…
Optimization-based hologram design for fine optical tweezer arrays and extension of super-resolution criteria
Keisuke Nishimura, Hiroto Sakai, Takafumi Tomita +2
Aligning light spots into arbitrary shapes is a fundamental challenge in holography, leading to various applications across diverse fields in science and engineering. However, as t…
Atom Camera: Super-resolution scanning microscope of a light pattern with a single ultracold atom
Takafumi Tomita, Yuki Torii Chew, Rene Villela +6
Sub-micrometer scale light patterns play a pivotal role in various fields, including biology, biophysics, and AMO physics. High-resolution, in situ observation of light profiles is…
Generation of 480 nm picosecond pulses for ultrafast excitation of Rydberg atoms
Tirumalasetty Panduranga Mahesh, Takuya Matsubara, Yuki Torii Chew +3
Atoms in Rydberg states are an important building block for emerging quantum technologies. While the excitation to the Rydberg orbitals are typically achieved in more than tens of…
Ultra-precise holographic optical tweezers array
Yuki Torii Chew, Martin Poitrinal, Takafumi Tomita +4
Neutral atoms trapped in microscopic optical tweezers have emerged as a growing platform for quantum science. Achieving homogeneity over the tweezers array is an important technica…
Strong Spin-Motion Coupling in the Ultrafast Dynamics of Rydberg Atoms
Vineet Bharti, Seiji Sugawa, Masaya Kunimi +7
Rydberg atoms in optical lattices and tweezers is now a well established platform for simulating quantum spin systems. However, the role of the atoms' spatial wavefunction has not…
Ultrafast energy exchange between two single Rydberg atoms on the nanosecond timescale
Yeelai Chew, Takafumi Tomita, Tirumalasetty Panduranga Mahesh +3
Rydberg atoms, with their giant electronic orbitals, exhibit dipole-dipole interaction reaching the GHz range at a distance of a micron, making them a prominent contender for reali…