Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR1.2k papers
- The University of TokyoJP948 papers
- Excellence Cluster UniverseDE902 papers
- University of BonnDE857 papers
- Max Planck Institute for PhysicsDE848 papers
- Ludwig-Maximilians-Universität MünchenDE836 papers
- Lawrence Berkeley National LaboratoryUS774 papers
- University of CopenhagenDK774 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR757 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR745 papers
- European Organization for Nuclear ResearchCH705 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di TorinoIT682 papers
25 papers · 2 filters
Controlling a d-level atom in a cavity
Thomas Hofmann, Michael Keyl
In this paper we study controllability of a -level atom interacting with the electromagnetic field in a cavity. The system is modelled by an ordered graph . The vertices of $…
The European Quantum Technologies Roadmap
Antonio Acín, Immanuel Bloch, Harry Buhrman +15
Within the last two decades, Quantum Technologies (QT) have made tremendous progress, moving from Noble Prize award-winning experiments on quantum physics into a cross-disciplinary…
Optimizing fingerprinting experiments for parameter identification: Application to spin systems
Q. Ansel, M. Tesch, S. J. Glaser +1
We introduce the Optimal Fingerprinting Process which is aimed at accurately identifying the parameters which characterize the dynamics of a physical system. A database is first bu…
Non-Markovianity in the optimal control of an open quantum system described by hierarchical equations of motion
Etienne Mangaud, Raijumon Puthumpally-Joseph, Dominique Sugny +3
Optimal control theory is implemented with fully converged hierarchical equations of motion (HEOM) describing the time evolution of an open system density matrix strongly coupled t…
Continuous phase-space representations for finite-dimensional quantum states and their tomography
Bálint Koczor, Robert Zeier, Steffen J. Glaser
Continuous phase spaces have become a powerful tool for describing, analyzing, and tomographically reconstructing quantum states in quantum optics and beyond. A plethora of these p…
Basic mechanisms in the laser control of non-Markovian dynamics
Raiju Puthumpally-Joseph, Etienne Mangaud, Vincent Chevet +3
Referring to a Fano-type model qualitative analogy we develop a comprehensive basic mechanism for the laser control of the non-Markovian bath response in strongly coupled Open Quan…
Correcting coherent errors with surface codes
Sergey Bravyi, Matthias Englbrecht, Robert Koenig +1
We study how well topological quantum codes can tolerate coherent noise caused by systematic unitary errors such as unwanted -rotations. Our main result is an efficient algorith…
Coherent state coding approaches the capacity of non-Gaussian bosonic channels
Stefan Huber, Robert Koenig
The additivity problem asks if the use of entanglement can boost the information-carrying capacity of a given channel beyond what is achievable by coding with simple product states…
Neural-Network Quantum States, String-Bond States, and Chiral Topological States
Ivan Glasser, Nicola Pancotti, Moritz August +2
Neural-Network Quantum States have been recently introduced as an Ansatz for describing the wave function of quantum many-body systems. We show that there are strong connections be…
Signatures of two-photon pulses from a quantum two-level system
Kevin A. Fischer, Lukas Hanschke, Jakob Wierzbowski +5
The theoretical community has found interest in the ability of a two-level atom to generate a strong many-body interaction with light under pulsed excitation. Single-photon generat…
Parity-Engineered Light-Matter Interaction
Jan Goetz, Frank Deppe, Kirill G. Fedorov +6
The concept of parity describes the inversion symmetry of a system and is of fundamental relevance in the standard model, quantum information processing, and field theory. In quant…
Pulsed Rabi oscillations in quantum two-level systems: beyond the Area Theorem
Kevin A. Fischer, Lukas Hanschke, Malte Kremser +3
The Area Theorem states that when a short optical pulse drives a quantum two-level system, it undergoes Rabi oscillations in the probability of scattering a single photon. In this…
Quantum compression relative to a set of measurements
Andreas Bluhm, Lukas Rauber, Michael M. Wolf
In this work, we investigate the possibility of compressing a quantum system to one of smaller dimension in a way that preserves the measurement statistics of a given set of observ…
Wigner tomography of multispin quantum states
David Leiner, Robert Zeier, Steffen J. Glaser
We study the tomography of multispin quantum states in the context of finite-dimensional Wigner representations. An arbitrary operator can be completely characterized and visualize…
Test of the Pauli Exclusion Principle in the VIP-2 underground experiment
C. Curceanu, H. Shi, S. Bartalucci +22
The validity of the Pauli Exclusion Principle, a building block of Quantum Mechanics, is tested for electrons. The VIP (VIolation of Pauli exclusion principle) and its follow-up VI…
Robust optimal control of two-level quantum systems
L. Van Damme, Q. Ansel, S. J. Glaser +1
We investigate the time and the energy minimum optimal solutions for the robust control of two-level quantum systems against offset or control field uncertainties. Using the Pontry…
Quantum advantage with shallow circuits
Sergey Bravyi, David Gosset, Robert Koenig
We prove that constant-depth quantum circuits are more powerful than their classical counterparts. To this end we introduce a non-oracular version of the Bernstein-Vazirani problem…
Underground tests of quantum mechanics. Whispers in the cosmic silence?
C. Curceanu, S. Bartalucci, A. Bassi +25
By performing X-rays measurements in the "cosmic silence" of the underground laboratory of Gran Sasso, LNGS-INFN, we test a basic principle of quantum mechanics: the Pauli Exclusio…
VIP-2 at LNGS: An experiment on the validity of the Pauli Exclusion Principle for electrons
J. Marton, S. Bartalucci, A. Bassi +26
We are experimentally investigating possible violations of standard quantum mechanics predictions in the Gran Sasso underground laboratory in Italy. We test with high precision the…
On the minimum output entropy of random orthogonal quantum channels
Motohisa Fukuda, Ion Nechita
We consider sequences of random quantum channels defined using the Stinespring formula with Haar-distributed random orthogonal matrices. For any fixed sequence of input states, we…
Perfect Sampling for Quantum Gibbs States
Daniel Stilck França
We show how to obtain perfect samples from a quantum Gibbs state on a quantum computer. To do so, we adapt one of the `Coupling from the Past'-algorithms proposed by Propp and Wils…
Finite-time quantum entanglement in propagating squeezed microwaves
Kirill G. Fedorov, S. Pogorzalek, U. Las Heras +13
Two-mode squeezing is a fascinating example of quantum entanglement manifested in cross-correlations of incompatible observables between two subsystems. At the same time, these sub…
Beating the limits with initial correlations
Daniel Basilewitsch, Rebecca Schmidt, Dominique Sugny +2
Fast and reliable reset of a qubit is a key prerequisite for any quantum technology. For real world open quantum systems undergoing non-Markovian dynamics, reset implies not only p…
Quantum Sensing of Weak Radio-Frequency Signals by Pulsed Mollow Absorption Spectroscopy
Timo Joas, Andreas M. Waeber, Georg Braunbeck +1
Quantum sensors, qubits sensitive to external fields, have become powerful detectors for various small acoustic and electromagnetic fields. A major key to their success have been d…