Publications (39)
Hybrid Simulations of Positively and Negatively Charged Pickup Ions and Cyclotron Wave Generation at Europa
R. T. Desai, M. M. Cowee, H. Wei +4
In the vicinity of Europa, Galileo observed bursty Alfvén-cyclotron wave power at the gyrofrequencies of a number of species including K, O, Na, and Cl, indicati…
The Gaia-ESO Public Spectroscopic Survey: Implementation, data products, open cluster survey, science, and legacy
S. Randich, G. Gilmore, L. Magrini +161
In the last 15 years different ground-based spectroscopic surveys have been started (and completed) with the general aim of delivering stellar parameters and elemental abundances f…
Two- and three-electron bubbles in AlGaAs/AlGaAs quantum wells
X. Fu, Q. Shi, M. A. Zudov +3
We report on transport signatures of eight distinct bubble phases in the Landau level of a AlGaAs/AlGaAs quantum well with . These…
eQASM: An Executable Quantum Instruction Set Architecture
X. Fu, L. Riesebos, M. A. Rol +13
A widely-used quantum programming paradigm comprises of both the data flow and control flow. Existing quantum hardware cannot well support the control flow, significantly limiting…
The Radcliffe Wave as traced by young open clusters: Stellar parameters, activity indicators, and abundances of solar-type members of eight young clusters
J. Alonso-Santiago, A. Frasca, A. Bragaglia +7
The Radcliffe Wave has only recently been recognised as a about 3 kpc long coherent gas structure encompassing most of the star forming regions in the solar vicinity. Since its dis…
Hidden Quantum Hall Stripes in AlGaAs/AlGaAs Quantum Wells
X. Fu, Yi Huang, Q. Shi +4
We report on transport signatures of hidden quantum Hall stripe (hQHS) phases in high () half-filled Landau levels of AlGaAs/AlGaAs quantum w…
Distributed-HISQ: A Distributed Quantum Control Architecture
Yilun Zhao, Kangding Zhao, Peng Zhou +12
The design of a scalable Quantum Control Architecture (QCA) faces two primary challenges. First, the continuous growth in qubit counts has rendered distributed QCA inevitable, yet…
Error Mitigation by Symmetry Verification on a Variational Quantum Eigensolver
R. Sagastizabal, X. Bonet-Monroig, M. Singh +11
Variational quantum eigensolvers offer a small-scale testbed to demonstrate the performance of error mitigation techniques with low experimental overhead. We present successful err…
Evolutionary tracks, ejecta, and ionizing photons from intermediate-mass to very massive stars with PARSEC
G. Costa, K. G. Shepherd, A. Bressan +12
Recent advancements in stellar evolution modeling offer unprecedented accuracy in predicting the evolution and deaths of stars. We present new stellar evolutionary models computed…
The Gaia-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products
G. Gilmore, S. Randich, C. C. Worley +165
The Gaia-ESO Public Spectroscopic Survey is an ambitious project designed to obtain astrophysical parameters and elemental abundances for 100,000 stars, including large representat…
Stellar Population Astrophysics (SPA) with TNG Atmospheric parameters of members of 16 unstudied open clusters
R. Zhang, S. Lucatello, A. Bragaglia +12
Thanks to modern understanding of stellar evolution, we can accurately measure the age of Open Clusters (OCs). Given their position, they are ideal tracers of the Galactic disc. Ga…
The Gaia-ESO Survey: properties of newly discovered Li-rich giants
R. Smiljanic, E. Franciosini, A. Bragaglia +41
We report 20 new lithium-rich giants discovered within the Gaia-ESO Survey, including the first Li-rich giant with evolutionary stage confirmed by CoRoT data. Atmospheric parameter…
The Gaia-ESO Survey: an extremely Li-rich giant in the globular cluster NGC 1261
N. Sanna, E. Franciosini, E. Pancino +16
Lithium rich stars in globular clusters are rare. In fact, only 14 have been found so far, in different evolutionary phases from dwarfs to giants. Different mechanisms have been pr…
Quantum Hall stripes in high-density GaAs/AlGaAs quantum wells
X. Fu, Q. Shi, M. A. Zudov +4
We report on quantum Hall stripes (QHSs) formed in higher Landau levels of GaAs/AlGaAs quantum wells with high carrier density ( cm) which is expecte…
Stellar Population Astrophysics (SPA) with the TNG. alpha-elements, lithium, sodium and aluminum in 16 open clusters
R. Zhang, S. Lucatello, A. Bragaglia +13
Exploring the Galactic chemical evolution and enrichment scenarios with open clusters allows us to understand the history of the Milky Way disk. High-resolution spectra of OCs are…
The Gaia-ESO Survey: Evidence of atomic diffusion in M67?
C. Bertelli Motta, A. Pasquali, J. Richer +37
Investigating the chemical homogeneity of stars born from the same molecular cloud at virtually the same time is very important for our understanding of the chemical enrichment of…
The Gaia-ESO Survey: Galactic evolution of lithium from iDR6
D. Romano, L. Magrini, S. Randich +31
We exploit the unique characteristics of a sample of open clusters (OCs) and field stars for which high-precision 7Li abundances and stellar parameters are homogeneously derived by…
Stellar Population Astrophysics (SPA) with the TNG: Stock 2, a little-studied open cluster with an eMSTO
J. Alonso-Santiago, A. Frasca, G. Catanzaro +14
Stock 2 is a little-studied open cluster that shows an extended main-sequence turnoff (eMSTO). In order to investigate this phenomenon and characterise the cluster itself we perfor…
Anomalous Nematic States in High Half-Filled Landau Levels
X. Fu, Q. Shi, M. A. Zudov +6
It is well established that the ground states of a two-dimensional electron gas with half-filled high () Landau levels are compressible charge-ordered states, known as qua…
PARSEC V2.0: Stellar tracks and isochrones of low and intermediate mass stars with rotation
C. T. Nguyen, G. Costa, L. Girardi +6
We present a new comprehensive collection of stellar evolutionary tracks and isochrones for rotating low- and intermediate-mass stars assembled with the updated version of PARSEC V…
Protecting quantum entanglement from leakage and qubit errors via repetitive parity measurements
C. C. Bultink, T. E. O'Brien, R. Vollmer +9
Protecting quantum information from errors is essential for large-scale quantum computation. Quantum error correction (QEC) encodes information in entangled states of many qubits,…
TIC 43152097. The first eclipsing binary in NGC 2232
A. Frasca, J. Alonso-Santiago, G. Catanzaro +5
We report the discovery of a low-mass totally eclipsing system in the young (age28 Myr) open cluster NGC2232, during a scrutiny of their TESS light curves. The follow-up st…
3D visualization of two-phase flow in the micro-tube by a simple but effective method
X. Fu, P. Zhang, H. Hu +3
The present study presents a simple but effective method for 3D visualization of the two-phase flow in the micro-tube. An isosceles right-angle prism combined with a mirror located…
Effect of illumination on quantum lifetime in GaAs quantum wells
X. Fu, A. Riedl, M. Borisov +7
Low-temperature illumination of a two-dimensional electron gas in GaAs quantum wells is known to greatly improve the quality of high-field magnetotransport. The improvement is know…
Flux-noise-resilient transmon qubit via a doubly-connected gradiometric design
J. B. Fu, Da-Wei Wang, B. Ren +12
Frequency-tunable superconducting transmon qubits are a cornerstone of scalable quantum processors, yet their performance is often degraded by sensitivity to low-frequency flux noi…
The discovery of a Li-Na-rich giant star in Omega Centauri: formed from the pure ejecta of super-AGB stars?
A. Mucciarelli, L. Monaco, P. Bonifacio +3
We report the discovery of two Li-rich giant stars (fainter than the red giant branch bump) in the stellar system Omega Centauri using GIRAFFE-FLAMES spectra. These two stars have…
Anomalous nematic-to-stripe phase transition driven by in-plane magnetic fields
X. Fu, Q. Shi, M. A. Zudov +6
Anomalous nematic states, recently discovered in ultraclean two-dimensional electron gas, emerge from quantum Hall stripe phases upon further cooling. These states are hallmarked b…
Field-Programmable Topological Array: Framework and Case-Studies
G. -Y. Huang, B. Li, X. -F. Yi +8
Engineering composite materials and devices with desired topological properties is accelerating the development of topological physics and its applications. Approaches of realizing…
Lithium abundance in lower red giant branch stars of Omega Centauri
A. Mucciarelli, M. Salaris, L. Monaco +3
We present Li, Na, Al and Fe abundances of 199 lower red giant branch stars members of the stellar system Omega Centauri, using high-resolution spectra acquired with FLAMES at the…
Stellar Population Astrophysics (SPA) with TNG. The old open clusters Collinder 350, Gulliver 51, NGC 7044, and Ruprecht 171
G. Casali, L. Magrini, A. Frasca +9
In the framework of the Stellar Population Astrophysics (SPA) project, we present new observations and spectral analysis of four sparsely studied open clusters, namely Collinder 35…
Self-assembly behaviour of diblock copolymer-diblock copolymer under oscillating shear field
Y. Guo, H. He, X. Fu
The self-assembly behaviour of a diblock copolymer-diblock copolymer mixture under an oscillating shear field is investigated via cell dynamics simulation. The results indicate tha…
An Experimental Microarchitecture for a Superconducting Quantum Processor
X. Fu, M. A. Rol, C. C. Bultink +10
Quantum computers promise to solve certain problems that are intractable for classical computers, such as factoring large numbers and simulating quantum systems. To date, research…
Microwave-induced resistance oscillations in a back-gated GaAs quantum well
X. Fu, Q. A. Ebner, Q. Shi +3
We performed effective mass measurements employing microwave-induced resistance oscillation in a tunable-density GaAs/AlGaAs quantum well. Our main result is a clear observation of…
A combined study of thermohaline mixing and envelope overshooting with PARSEC: Calibration to NGC 6397 and M4
C. T. Nguyen, A. Bressan, A. J. Korn +7
Thermohaline mixing is one of the main processes in low-mass red giant stars that affect the transport of chemicals and, thus, the surface abundances along the evolution. The inter…
Performance of FPGA controller in ISAC-1 accelerator chain
K. Fong, X. Fu, Q. W. Zheng +6
The LLRF of five of TRIUMF's ISAC-1 accelerator cavities have been replaced by 3 similar FPGA based system with different operating frequencies. These LLRF use internal digital pha…
Active resonator reset in the nonlinear dispersive regime of circuit QED
C. C. Bultink, M. A. Rol, T. E. O'Brien +8
We present two pulse schemes for actively depleting measurement photons from a readout resonator in the nonlinear dispersive regime of circuit QED. One method uses digital feedback…
Restless Tuneup of High-Fidelity Qubit Gates
M. A. Rol, C. C. Bultink, T. E. O'Brien +11
We present a tuneup protocol for qubit gates with tenfold speedup over traditional methods reliant on qubit initialization by energy relaxation. This speedup is achieved by constru…
Lithium in the closest satellite of our Milky Way
G. Cescutti, P. Molaro, X. Fu
Recently, we studied the chemical evolution of lithium in the thin disc of the Milky Way. We found that the best agreement with the observed Li abundances in the thin disc is obtai…
Effect of density on microwave-induced resistance oscillations in back-gated GaAs quantum wells
X. Fu, M. D. Borisov, M. A. Zudov +3
We report on microwave-induced resistance oscillations (MIROs) in a tunable-density 30-nm-wide GaAs/AlGaAs quantum well. We find that the MIRO amplitude increases dramatically with…