We propose and experimentally demonstrate an analog scheme for generating XY-type (<a:math...

We present measurements of the dynamical structure factor S(q,ω) an interacting one-dimensional Fermi gas for small excitation energies. use two lowest hyperfine levels ^{6}Li atom to form a pseudospin-1/2 system whose s-wave interactions are tunable via Feshbach resonance. The atoms confined one dimension by two-dimensional optical lattice. Bragg spectroscopy is used measure response density ("charge") mode excitations at momentum q and frequency ω, as function interaction strength....

Abstract High-precision, individually programmable manipulation of quantum particles is crucial for scaling up information processing (QIP) systems such as laser-cooled trapped-ions. However, restricting undesirable “crosstalk” in optical ion qubits fundamentally challenging due to micron-level inter-ion separation. Further, inhomogeneous spacing and high susceptibility aberrations at UV wavelengths suitable most ion-species pose severe challenges. Here, we demonstrate high-precision...

Abstract Controlling the interaction graph between spins or qubits in a quantum simulator allows user-controlled tailoring of native interactions to achieve target Hamiltonian. Engineering long-ranged phonon-mediated spin–spin trapped ion offers such possibility. Trapped ions, leading candidate for simulation, are most readily linear 1D chain, limiting their utility simulating higher dimensional spin models. In this work, we introduce hybrid method analog-digital simulation 2D models which...

Abstract Protecting qubits from accidental measurements is essential for controlled quantum operations, especially during state-destroying or resets on adjacent qubits, in protocols like error correction. Current methods to preserve atomic against such disturbances waste coherence time, extra and introduce additional errors. We demonstrate the feasibility of in-situ state-reset state-measurement trapped ions, achieving &gt;99.9% fidelity preserving an ‘asset’ ion-qubit while a neighboring...

Mono- and polycrystalline Ni films, ranging in thickness from 19 to 382 nm, have been produced by vacuum deposition on (001) monocrystalline Ag/NaCl glass substrates, respectively. Subsequently, saturation magnetization Ms, magnetogyric factor γ/2π, effective uniaxial anisotropy Hk were measured a combination of vibrating sample magnetometer ferromagnetic resonance (FMR), corresponding internal stress σ was levered optical beam reflection technique. In addition, the microstructure both mono-...

Holographic beam shaping using spatial light modulators (SLMs) as a reprogrammable hologram offers powerful tool for precise and flexible optical controls.It has been adopted wide range of researches, including atom trapping (Gaunt & Hadzibabic, 2012), addressing individual quantum objects (Motlakunta et al., 2024), preparation exotic states (Islam 2015), multi-beam laser machining (Obata 2010).pySLM2 is python package designed holographic applications, encompassing generation, simulation,...

We theoretically study the loading of cold atoms into a crossed optical dipole trap (ODT). compared efficiency dependent on geometry for Nd:YAG and CO2 laser ODTs. By crossing two beams at small angle, such as 10°, we can shape effective potential in intersection region achieve comparable performance to that single-beam ODT. also calculate optimal experimental parameters these wavelengths power per beam ranging from 5 W 100 W. further experimentally studied laser-cooled Rb87 small-angle ODT...

Protecting a quantum object against irreversible accidental measurements from its surroundings is necessary for controlled operations. This becomes especially challenging or unfeasible if one must simultaneously measure reset nearby object's state, such as in error correction. In atomic systems - among the most established information processing platforms current attempts to preserve qubits resonant laser-driven adjacent waste valuable experimental resources coherence time extra and...

We report here the first MEMS temperature-programmable high pressure parylene column with integrated thermal isolation and electrochemical sensor for on-chip temperature gradient liquid chromatography. Two sets of devices different performance chromatography (HPLC) criteria were fabricated. The separation detection derivatized amino acids sample was successfully demonstrated. Compared other HPLC systems which use "macro oven" to generate temporal in column, our device's is greatly improved...

Controlling the interaction graph between spins or qubits in a quantum simulator allows user-controlled tailoring of native interactions to achieve target Hamiltonian. The flexibility engineering long-ranged phonon-mediated spin-spin trapped ion offers such possibility. Trapped ions, leading candidate for simulating computationally hard many-body dynamics, are most readily linear 1D chain, limiting their utility higher dimensional spin models. In this work, we introduce hybrid method...

Despite the progress in building sophisticated microfabricated ion traps, Paul traps employing needle electrodes retain their significance due to simplicity of fabrication while producing high-quality systems suitable for quantum information processing, atomic clocks, etc. For low noise operations such as minimizing “excess micromotion,” needles should be geometrically straight and aligned precisely with respect each other. Self-terminated electrochemical etching, previously employed...

We propose and experimentally demonstrate an analog scheme for generating XY-type ($J_{ij}^x \sigma_x^i \sigma_x^j \;$ + $J_{ij}^y \sigma_y^i \sigma_y^j \;$) Hamiltonians on trapped ion spins with independent control over the $J_{ij}^x$ $J_{ij}^y$ terms. The Ising-type interactions $\sigma_x^i $\sigma_y^i are simultaneously generated by employing two spin-dependent forces operating in parallel same set of normal modes. analytically calculate region validity this scheme, provide numerical...