David Wilkowski
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View article: Fault-tolerant dynamically-decoupled hyper-Ramsey spectroscopy of ultra-narrow clock transitions
Fault-tolerant dynamically-decoupled hyper-Ramsey spectroscopy of ultra-narrow clock transitions Open
Hyper-Ramsey protocols effectively reduce AC-Stark shifts in probing ultra-narrow optical clock transitions but they remain sensitive to laser intensity noise, decoherence, frequency drifts, and low-frequency perturbations. We address thes…
Topological optical skyrmion transfer to matter Open
The ability of structured light to mimic exotic topological skyrmion textures encountered in high-energy physics, cosmology, magnetic materials, and superfluids has recently received considerable attention. Despite their promise as mechani…
View article: Experimental realization of a SU(3) color-orbit coupling in an ultracold gas
Experimental realization of a SU(3) color-orbit coupling in an ultracold gas Open
Spin-orbit interaction couples the spin of a particle to its motion and leads to spin-induced transport phenomena such as spin-Hall effects and Chern insulators. In this work, we extend the concept of internal-external state coupling to hi…
Super-resolution optical trapping of multiple cold atoms Open
Arrays of optical tweezers form the backbone of neutral atoms analog and digital quantum processors. However, the inter-trap distance remains generally much larger than the size of the tweezers to avoid interference-induced trap distortion…
View article: Experimental realization of a SU(3) color-orbit coupling in an ultracold gas
Experimental realization of a SU(3) color-orbit coupling in an ultracold gas Open
Spin-orbit interaction couples the spin of a particle to its motion and leads to spin-induced transport phenomena such as spin-Hall effects and Chern insulators. In this work, we extend the concept of internal-external state coupling to hi…
Doppler-free selective reflection spectroscopy of electric-quadrupole transitions Open
Electric-dipole-forbidden transitions play an important role as in quantum sensing, quantum information, and fundamental test in physics. As such, the development of novel and sensitive spectroscopic methods is of major interest. Here, we …
High flux strontium atom source Open
We present a novel cold strontium atom source designed for quantum sensors. We optimized the deceleration process to capture a large velocity class of atoms emitted from an oven and achieved a compact and low-power setup capable of generat…
High flux strontium atom source Open
We present a novel cold strontium atom source designed for quantum sensors. We optimized the deceleration process to capture a large velocity class of atoms emitted from an oven and achieved a compact and low-power setup capable of generat…
Geometric Ramsey Interferometry with a Tripod Scheme Open
Ramsey interferometry is a key technique for precision spectroscopy and to probe the coherence of quantum systems. Typically, an interferometer is constructed using two quantum states and involves a time-dependent interaction with two shor…
View article: Engineering quantum control with twisted-light fields induced optical transitions
Engineering quantum control with twisted-light fields induced optical transitions Open
A novel form of quantum control is proposed by applying twisted-light also known as optical vortex beams to drive ultra-narrow atomic transitions in neutral Ca, Mg, Yb, Sr, Hg and Cd bosonic isotopes. This innovative all-optical spectrosco…
The Rise of Toroidal Electrodynamics and Spectroscopy Open
Toroidal electrodynamics is now massively influencing research in toroidal (Marinov et al. New J. Phys. 2007, 9, 234; Basharin et al. Phys. Rev. X 2015, 5, 011036; Jeong et al. ACS Photonics 2020, 7, 1699) and anapole metamaterials (Bashar…
Toroidal optical transitions in hydrogen-like atoms Open
It is commonly believed that electromagnetic spectra of atoms and molecules can be fully described by interactions involving electric and magnetic multipoles. However, it has recently become clear that interactions between light and matter…
Single atom in a superoscillatory optical trap Open
Optical tweezers have become essential tools to manipulate atoms or molecules at a single particle level. However, using standard diffracted-limited optical systems, the transverse size of the trap is lower bounded by the optical wavelengt…
View article: Optical magnetism and wavefront control by arrays of strontium atoms
Optical magnetism and wavefront control by arrays of strontium atoms Open
By analyzing the parameters of electronic transitions, we show how bosonic Sr atoms in planar optical lattices can be engineered to exhibit optical magnetism and other higher-order electromagnetic multipoles that can be harnessed for wavef…
View article: Wave Packet Dynamics in Synthetic Non-Abelian Gauge Fields
Wave Packet Dynamics in Synthetic Non-Abelian Gauge Fields Open
It is generally admitted that in quantum mechanics, the electromagnetic potentials have physical interpretations otherwise absent in classical physics as illustrated by the Aharonov-Bohm effect. In 1984, Berry interpreted this effect as a …
View article: Bi-color atomic beam slower and magnetic field compensation for ultracold gases
Bi-color atomic beam slower and magnetic field compensation for ultracold gases Open
Transversely loaded bidimensional-magneto-optical-traps (2D-MOT) have been recently developed as high flux sources for cold strontium atoms to realize a new generation of compact experimental setups. Here, we discuss on the implementation …
Datta-Das transistor for atomtronic circuits using artificial gauge fields Open
Spin-dependent electrical injection has found useful applications in storage devices, but fully operational spin-dependent semiconductor electronics remain a challenging task because of weak spin-orbit couplings and/or strong spin relaxati…
View article: Generalized hyper-Ramsey-Bordé matter-wave interferometry: Quantum engineering of robust atomic sensors with composite pulses
Generalized hyper-Ramsey-Bordé matter-wave interferometry: Quantum engineering of robust atomic sensors with composite pulses Open
International audience
Evolution of an ultracold gas in a non-Abelian gauge field: finite temperature effect Open
The cooling mechanisms of a Fermionic strontium-87 gas are refined in order to study its evolution under a non-Abelian gauge field. Significant attention is paid to the effect of the finite temperature of the gas on the process in question…
View article: SU(2) hyper-clocks: Quantum engineering of spinor interferences for time and frequency metrology
SU(2) hyper-clocks: Quantum engineering of spinor interferences for time and frequency metrology Open
In 1949, Ramsey's method of separated oscillating fields was elaborated\nboosting over many decades metrological performances of atomic clocks and\nbecoming the standard technique for very high precision spectroscopic\nmeasurements. A gene…
Toroidal optical transitions in hydrogen-like atoms Open
It is commonly believed that electromagnetic spectra of atoms and molecules can be fully described by interactions of electric and magnetic multipoles. However, it has recently become clear that interactions between light and matter also i…
Homodyne detection of a two-photon resonance assisted by cooperative emission Open
Focusing on the transient regime, we explore atomic two-photon spectroscopy with self-aligned homodyne interferometry in a $\Lambda$-system with large optical depth. The two light sources at the origin of the interference are the single-ph…
View article: Wave-packet Dynamics in Synthetic Non-Abelian Gauge Fields
Wave-packet Dynamics in Synthetic Non-Abelian Gauge Fields Open
It is generally admitted that in quantum mechanics, the electromagnetic potentials have physical interpretations otherwise absent in classical physics as illustrated by the Aharonov-Bohm effect. In 1984, Berry interpreted this effect as a …
View article: Roadmap on Atomtronics: State of the art and perspective
Roadmap on Atomtronics: State of the art and perspective Open
Atomtronics deals with matter-wave circuits of ultracold atoms manipulated through magnetic or laser-generated guides with different shapes and intensities. In this way, new types of quantum networks can be constructed in which coherent fl…
Resonant forward-scattered field in the high-saturation regime: Elastic and inelastic contributions Open
We measure the resonant forward scattering of light by a highly saturated\natomic medium through the flashes emitted immediately after an abrupt\nextinction of the probe beam. The experiment is done in a dilute regime where\nthe phenomena …
View article: Hyper Ramsey-Bordé matter-wave interferometry for robust quantum sensors
Hyper Ramsey-Bordé matter-wave interferometry for robust quantum sensors Open
A new generation of atomic sensors using ultra-narrow optical clock transitions and composite pulses are pushing quantum engineering control to a very high level of precision for applied and fundamental physics. Here, we propose a new vers…
View article: Roadmap on Atomtronics
Roadmap on Atomtronics Open
Atomtronics is an emerging field of quantum technology dealing with matter-wave circuits of ultra-cold atoms manipulated in magnetic or laser-generated guides of different shapes and intensity. Atomtronic circuits are promised to define qu…