Sophisticated Ramsey-based interrogation protocols using composite laser pulse sequences have been recently proposed to provide next-generation high-precision atomic …
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 consists in the coherent transfer of vortices in superfluids. We investigate this phenomenon in two miscible coherently coupled components of a spinor …
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 …
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 …
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 …
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 …
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 …
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 …