T. Zanon-Willette
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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…
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…
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…
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…
View article: Theory of nonlinear sub-Doppler laser spectroscopy taking into account atomic-motion-induced density-dependent effects in a gas
Theory of nonlinear sub-Doppler laser spectroscopy taking into account atomic-motion-induced density-dependent effects in a gas Open
We develop a field-nonlinear theory of sub-Doppler spectroscopy in a gas of two-level atoms, based on a self-consistent solution of the Maxwell-Bloch equations in the mean field and single-atom density matrix approximations. This makes it …
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…
View article: Influence of Free Motion of Atoms on Atomic Density-Dependent Effects in Nonlinear Laser Spectroscopy of Resonant Gas Media
Influence of Free Motion of Atoms on Atomic Density-Dependent Effects in Nonlinear Laser Spectroscopy of Resonant Gas Media Open
We develop a nonlinear theory of propagation of a monochromatic light wave in a gas of two-level atoms under the condition of inhomogeneous Doppler lineshape broadening, while considering a self-consistent solution of the Maxwell–Bloch equ…
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 …
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
A new class of atomic interferences using ultra-narrow optical transitions are pushing quantum engineering control to a very high level of precision for a next generation of sensors and quantum gate operations. In such context, we propose …
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…
View article: Harmonic dual dressing of spin-1/2 systems
Harmonic dual dressing of spin-1/2 systems Open
Controlled modifications of the magnetic response of a two-level system are produced in dressed systems by one high-frequency, strong, and nonresonant electromagnetic field. This quantum control is greatly enhanced and enriched by a harmon…
View article: SU(2) hyper-clocks with programmable composite phase-shifts
SU(2) hyper-clocks with programmable composite phase-shifts Open
In 1949, Ramsey's method of separated oscillating fields was proposed boosting over many decades metrological performances of atomic clocks and becoming the standard technique for very high precision spectroscopic measurements. A full gene…
View article: Harmonic dual dressing of spin one-half systems
Harmonic dual dressing of spin one-half systems Open
Controlled modifications of the quantum magnetic response are produced in dressed systems by a high frequency, strong and not-resonant electromagnetic field. This quantum control is greatly enhanced and enriched by the harmonic, commensura…
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: Generalised hyper-Ramsey spectroscopy of two-level atoms in an optically dense medium
Generalised hyper-Ramsey spectroscopy of two-level atoms in an optically dense medium Open
The peculiarities of Ramsey resonance and its sensitivity to the light shift from an optically dense medium of cold atoms are investigated. Different composite pulse protocols for clock spectroscopy, including hyper-Ramsey, modified and ge…
View article: Harmonic Fine Tuning and Triaxial Spatial Anisotropy of Dressed Atomic Spins
Harmonic Fine Tuning and Triaxial Spatial Anisotropy of Dressed Atomic Spins Open
The addition of a weak oscillating field modifying strongly dressed spins enhances and enriches the system quantum dynamics. Through low-order harmonic mixing, the bichromatic driving generates additional rectified static field acting on t…
View article: Generalized Ramsey methods in the spectroscopy of coherent-population-trapping resonances
Generalized Ramsey methods in the spectroscopy of coherent-population-trapping resonances Open
International audience
View article: Harmonic fine tuning and triaxial spatial anisotropy of dressed atomic spins
Harmonic fine tuning and triaxial spatial anisotropy of dressed atomic spins Open
The addition of a weak oscillating field modifying strongly dressed spins enhances and enriches the system quantum dynamics. Through low-order harmonic mixing the bichromatic driving generates additional rectified static field acting on th…
View article: Generalized Hyper-Ramsey spectroscopy in an optically dense medium
Generalized Hyper-Ramsey spectroscopy in an optically dense medium Open
In this work, the peculiarities of Ramsey resonance and its sensitivity to the light shift from an optically dense medium of cold atoms are investigated. We considered different composite pulse protocols for clock spectroscopy such as hype…
View article: Generalised hyper-Ramsey resonance with spinors
Generalised hyper-Ramsey resonance with spinors Open
PAPER PRESENTED AT THE VIII SYMPOSIUM 'MPLP-2018'
View article: Combined error signal in Ramsey spectroscopy of clock transitions
Combined error signal in Ramsey spectroscopy of clock transitions Open
We have developed a universal method to form the reference signal for the stabilization of arbitrary atomic clocks based on Ramsey spectroscopy. Our approach uses an interrogation scheme of the atomic system with two different Ramsey perio…
View article: Progress and perspectives on composite laser-pulses spectroscopy for high-accuracy optical clocks
Progress and perspectives on composite laser-pulses spectroscopy for high-accuracy optical clocks Open
Probing an atomic resonance without disturbing it is an ubiquitous issue in physics. This problem is critical in high-accuracy spectroscopy or for the next generation of atomic optical clocks. Ultra-high resolution frequency metrology requ…
View article: Nonlinear Frequency-Sweep Correction of Tunable Electromagnetic Sources
Nonlinear Frequency-Sweep Correction of Tunable Electromagnetic Sources Open
Tunable electromagnetic (EM) sources, such as voltage-controlled oscillators, micro-electromechanical systems, or diode lasers are often required to be linear during frequency-sweep modulation. In many cases, it might also be sufficient th…
View article: Toward a High-Stability Coherent Population Trapping Cs Vapor-Cell Atomic Clock Using Autobalanced Ramsey Spectroscopy
Toward a High-Stability Coherent Population Trapping Cs Vapor-Cell Atomic Clock Using Autobalanced Ramsey Spectroscopy Open
International audience
View article: Generalized auto-balanced Ramsey spectroscopy of clock transitions
Generalized auto-balanced Ramsey spectroscopy of clock transitions Open
When performing precision measurements, the quantity being measured is often perturbed by the measurement process itself. This includes precision frequency measurements for atomic clock applications carried out with Ramsey spectroscopy. Wi…
View article: Universal interrogation protocol with zero probe-field-induced frequency shift for quantum clocks and high-accuracy spectroscopy
Universal interrogation protocol with zero probe-field-induced frequency shift for quantum clocks and high-accuracy spectroscopy Open
Optical clock interrogation protocols, based on laser-pulse spectroscopy, are\nsuffering from probe-induced frequency shifts and their variations induced by\nlaser power. Original Hyper-Ramsey probing scheme, which was proposed to\nallevia…
View article: Universal interrogation protocol for zero probe-field-induced frequency-shift in high-accuracy quantum clocks
Universal interrogation protocol for zero probe-field-induced frequency-shift in high-accuracy quantum clocks Open
Optical clock interrogation protocols, based on laser-pulse spectroscopy, are suffering from probe-induced frequency shifts and their variations induced by laser power. Original Hyper-Ramsey probing scheme, which was proposed to alleviate …
View article: Synthetic frequency protocol for Ramsey spectroscopy of clock transitions
Synthetic frequency protocol for Ramsey spectroscopy of clock transitions Open
We develop an universal method to significantly suppress probe-induced shifts in any types of atomic clocks using the Ramsey spectroscopy. Our approach is based on adaptation of the synthetic frequency concept [V. I. Yudin, et al., Phys. R…
View article: Probe light-shift elimination in generalized hyper-Ramsey quantum clocks
Probe light-shift elimination in generalized hyper-Ramsey quantum clocks Open
We present a new interrogation scheme for the next generation of quantum clocks to suppress frequency-shifts induced by laser probing fields themselves based on Generalized Hyper-Ramsey resonances. Sequences of composite laser pulses with …