51 citations · 252 across the 10 of their papers we have counts for
10 papers
Photon Correlation Spectroscopy as a Probe of Critical Fluctuations in Correlated Electron Systems
Natasha Kiper, Bertrand Evrard, Yuya Shimazaki +5
Characterizing phase transitions between correlated electronic phases, extracting their critical exponents, and identifying their universality class are of central interest in many…
AC-Stark Spectroscopy of Interactions between Moiré Excitons and Polarons
B. Evrard, H. S. Adlong, A. A. Ghita +6
We use nonlinear pump-probe spectroscopy to study optical excitations in a charge-tunable MoSe\WS moiré heterostructure. An intense red-detuned laser pulse creates a photon…
Quantum scars and regular eigenstates in a chaotic spinor condensate
Bertrand Evrard, Andrea Pizzi, Simeon I. Mistakidis +1
Quantum many-body scars (QMBS) consist of a few low-entropy eigenstates in an otherwise chaotic many-body spectrum, and can weakly break ergodicity resulting in robust oscillatory…
Interaction induced AC-Stark shift of exciton-polaron resonances
Takahiro Uto, Bertrand Evrard, Kenji Watanabe +3
Laser induced shift of atomic states due to the AC-Stark effect has played a central role in cold-atom physics and facilitated their emergence as analog quantum simulators. Here, w…
Coherent seeding of the dynamics of a spinor Bose-Einstein condensate: from quantum to classical behavior
Bertrand Evrard, An Qu, Jean Dalibard +1
We present experiments revealing the competing effect of quantum fluctuations and of a coherent seed in the dynamics of a spin-1 Bose-Einstein condensate, and discuss the relevance…
Production and characterization of a fragmented spinor Bose-Einstein condensate
Bertrand Evrard, An Qu, Jean Dalibard +1
Understanding the ground state of many-body fluids is a central question of statistical physics. Usually for weakly interacting Bose gases, most particles occupy the same state, co…