123 citations · 333 across the 11 of their papers we have counts for
11 papers
Kinetic Inductance Parametric Converter
M. Khalifa, P. Feldmann, J. Salfi
Parametric converters are parametric amplifiers that mix two spatially separate nondegenerate modes and are commonly used for amplifying and squeezing microwave signals in quantum…
Measurement-based quantum machine learning
Luis Mantilla Calderón, Robert Raussendorf, Polina Feldmann +1
Quantum machine learning (QML) leverages quantum computing for classical inference, furnishes the processing of quantum data with machine-learning methods, and provides quantum alg…
Optimal squeezing for high-precision atom interferometers
Polina Feldmann, Fabian Anders, Alexander Idel +5
We show that squeezing is a crucial resource for interferometers based on the spatial separation of ultra-cold interacting matter. Atomic interactions lead to a general limitation…
Excited-State Phase Diagram of a Ferromagnetic Quantum Gas
Bernd Meyer-Hoppe, Fabian Anders, Polina Feldmann +2
The ground-state phases of a quantum many-body system are characterized by an order parameter, which changes abruptly at quantum phase transitions when an external control paramete…
The role of cohomology in quantum computation with magic states
Robert Raussendorf, Cihan Okay, Michael Zurel +1
A web of cohomological facts relates quantum error correction, measurement-based quantum computation, symmetry protected topological order and contextuality. Here we extend this we…
Momentum Entanglement for Atom Interferometry
F. Anders, A. Idel, P. Feldmann +13
Compared to light interferometers, the flux in cold-atom interferometers is low and the associated shot noise large. Sensitivities beyond these limitations require the preparation…
Excited-state quantum phase transitions in spinor Bose-Einstein condensates
Polina Feldmann, Carsten Klempt, Augusto Smerzi +2
Excited-state quantum phase transitions (ESQPTs) extend the notion of quantum phase transitions beyond the ground state. They are characterized by closing energy gaps amid the spec…
Quantum autoencoders to denoise quantum data
Dmytro Bondarenko, Polina Feldmann
Entangled states are an important resource for quantum computation, communication, metrology, and the simulation of many-body systems. However, noise limits the experimental prepar…
Critical Wess-Zumino models with four supercharges from the functional renormalization group
Polina Feldmann, Andreas Wipf, Luca Zambelli
We analyze the supersymmetric Wess-Zumino model dimensionally reduced to the supersymmetric model in three Euclidean dimensions. As in the original…
Interferometric sensitivity and entanglement by scanning through quantum phase transitions in spinor Bose-Einstein condensates
P. Feldmann, M. Gessner, M. Gabbrielli +4
Recent experiments have demonstrated the generation of entanglement by quasi-adiabatically driving through quantum phase transitions of a ferromagnetic spin-1 Bose-Einstein condens…
Heralded Generation of Macroscopic Superposition States in a Spinor Bose-Einstein Condensate
L. Pezze', M. Gessner, P. Feldmann +3
We propose to generate macroscopic superposition states of a large number of atoms in the ground state of a three-mode spinor Bose-Einstein condensate. The ground state is protecte…