Optical manipulation of valley pseudospin

Z Ye, D Sun, TF Heinz - Nature physics, 2017 - nature.com
The coherent manipulation of spin and pseudospin underlies existing and emerging
quantum technologies, including quantum communication and quantum computation …

Ramsey spectroscopy with displaced frequency jumps

M Shuker, JW Pollock, R Boudot, VI Yudin… - Physical Review Letters, 2019 - APS
Sophisticated Ramsey-based interrogation protocols using composite laser pulse
sequences have been recently proposed to provide next-generation high-precision atomic …

Detection of out-of-time-order correlators and information scrambling in cold atoms: Ladder- model

CB Dağ, LM Duan - Physical Review A, 2019 - APS
Out-of-time-order correlators (OTOCs), recently at the center of discussion on quantum
chaos, are tools to understand the information scrambling in different phases of quantum …

Coherent quantum phase slip in two-component bosonic atomtronic circuits

A Gallemí, AM Mateo, R Mayol… - New Journal of …, 2015 - iopscience.iop.org
Coherent quantum phase slip consists in the coherent transfer of vortices in superfluids. We
investigate this phenomenon in two miscible coherently coupled components of a spinor …

Noise-aware variational eigensolvers: a dissipative route for lattice gauge theories

J Cobos, DF Locher, A Bermudez, M Müller, E Rico - PRX Quantum, 2024 - APS
We propose a novel variational ansatz for the ground-state preparation of the Z 2 lattice
gauge theory (LGT) in quantum simulators. It combines dissipative and unitary operations in …

Robust two-level system control by a detuned and chirped laser pulse

H Jo, H Lee, S Guérin, J Ahn - Physical Review A, 2017 - APS
We propose and demonstrate a robust control scheme by an ultrafast nonadiabatic chirped
laser pulse, designed for targeting coherent superpositions of two-level systems …

Shaping waveform of X-ray Mössbauer scattering into short pulses

J Lee - 2023 - pure.mpg.de
The Mössbauer nuclei have proven as a good platform for X-ray quantum optics with their
coherent resonant scattering and ultranarrow linewidth from recoiless scattering, and long …

Ultrafast laser-driven Rabi oscillations of a trapped atomic vapor

H Lee, H Kim, J Ahn - Optics Letters, 2015 - opg.optica.org
We consider the Rabi oscillation of an atom ensemble of Gaussian spatial distribution
interacting with ultrafast laser pulses. Based on an analytical model calculation, we show …

Berry-phase gates for fast and robust control of atomic clock states

Y Song, J Lim, J Ahn - Physical Review Research, 2020 - APS
We propose and experimentally demonstrate a fast Berry-phase gate, which is implemented
by picosecond-timescale optical pulses to make the qubit system of atomic clock states …

Qubit leakage suppression by ultrafast composite pulses

H Jo, Y Song, J Ahn - Optics Express, 2019 - opg.optica.org
The leakage suppression problem is considered for a three-level ladder-type quantum
system, in which the first two levels are the qubit system and the third is the leakage state …