50 citations · 282 across the 13 of their papers we have counts for
15 papers
Creating and Probing Spin-Squeezed States of Molecules
Connor M. Holland, Callum L. Welsh, Yukai Lu +4
Polar molecules are a promising platform for quantum-enhanced sensing and precision tests of fundamental physics, owing to their strong long-range dipolar interactions, broad sensi…
Many-Body Effects in Dark-State Laser Cooling
Muhammad Miskeen Khan, David Wellnitz, Bhuvanesh Sundar +6
We develop a unified many-body theory of two-photon dark-state laser cooling, the workhorse for preparing trapped ions close to their motional quantum ground state. For ions with a…
Emergent interaction-induced topology in Bose-Hubbard ladders
David Wellnitz, Gustavo A. Domínguez-Castro, Thomas Bilitewski +3
We investigate the quantum many-body dynamics of bosonic atoms hopping in a two-leg ladder with strong on-site contact interactions. We observe that when the atoms are prepared in…
Sub-millisecond Entanglement and iSWAP Gate between Molecular Qubits
Lewis R. B. Picard, Annie J. Park, Gabriel E. Patenotte +4
Quantum computation (QC) and simulation rely on long-lived qubits with controllable interactions. Early work in quantum computing made use of molecules because of their readily ava…
Observation of generalized t-J spin dynamics with tunable dipolar interactions
Annette N. Carroll, Henrik Hirzler, Calder Miller +8
Long-range and anisotropic dipolar interactions profoundly modify the dynamics of particles hopping in a periodic lattice potential. We report the realization of a generalized t-J…
Relaxation in dipolar spin ladders: from pair production to false-vacuum decay
G. A. Domínguez-Castro, Thomas Bilitewski, David Wellnitz +2
Ultracold dipolar particles pinned in optical lattices or tweezers provide an excellent platform for studying out-of-equilibrium quantum magnetism with dipole-mediated couplings. S…
Observing dynamical phases of BCS superconductors in a cavity QED simulator
Dylan J. Young, Anjun Chu, Eric Yilun Song +7
In conventional Bardeen-Cooper-Schrieffer (BCS) superconductors, electrons with opposite momenta bind into Cooper pairs due to an attractive interaction mediated by phonons in the…
Comparing bipartite entropy growth in open-system matrix-product simulation methods
Guillermo Preisser, David Wellnitz, Thomas Botzung +1
The dynamics of one-dimensional quantum many-body systems is often numerically simulated with matrix-product states (MPSs). The computational complexity of MPS methods is known to…
Momentum-selective pair creation of spin excitations in dipolar bilayers
Thomas Bilitewski, G. A. Domínguez-Castro, David Wellnitz +2
We study the temporal growth and spatial propagation of quantum correlations in a two-dimensional bilayer realising a spin-1/2 quantum XXZ model with couplings mediated by long-ran…
Spin Squeezing with Itinerant Dipoles: A Case for Shallow Lattices
David Wellnitz, Mikhail Mamaev, Thomas Bilitewski +1
Entangled spin squeezed states generated via dipolar interactions in lattice models provide unique opportunities for quantum enhanced sensing and are now within reach of current ex…
A Network Approach to Atomic Spectra
David Wellnitz, Armin Kekić, Julian Heiss +3
Network science provides a universal framework for modeling complex systems, contrasting the reductionist approach generally adopted in physics. In a prototypical study, we utilize…
Rise and fall, and slow rise again, of operator entanglement under dephasing
David Wellnitz, Guillermo Preisser, Vincenzo Alba +2
The operator space entanglement entropy, or simply 'operator entanglement' (OE), is an indicator of the complexity of quantum operators and of their approximability by Matrix Produ…
Disorder enhanced vibrational entanglement and dynamics in polaritonic chemistry
David Wellnitz, Guido Pupillo, Johannes Schachenmayer
Collectively coupling molecular ensembles to a cavity has been demonstrated to modify chemical reactions akin to catalysis. Theoretically understanding this experimental finding re…
A quantum optics approach to photoinduced electron transfer in cavities
David Wellnitz, Guido Pupillo, Johannes Schachenmayer
We study a simple model for photoinduced electron transfer reactions for the case of many donor-acceptor pairs that are collectively and homogeneously coupled to a photon mode of a…
Collective Dissipative Molecule Formation in a Cavity
David Wellnitz, Stefan Schütz, Shannon Whitlock +2
We propose a mechanism to realize high-yield molecular formation from ultracold atoms. Atom pairs are continuously excited by a laser, and a collective decay into the molecular gro…