5.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Ludwig-Maximilians-Universität MünchenDE568 papers
- Munich Center for Quantum Science and TechnologyDE404 papers
- Max Planck SocietyDE381 papers
- Centre National de la Recherche ScientifiqueFR143 papers
- Institute of Photonic SciencesES131 papers
- Technical University of MunichDE114 papers
- Universität InnsbruckAT107 papers
- ETH ZurichCH105 papers
- Harvard UniversityUS101 papers
- Austrian Academy of SciencesAT87 papers
- University of ViennaAT83 papers
- Institució Catalana de Recerca i Estudis AvançatsES75 papers
59 papers · 2 filters
Topological lower bound on quantum chaos by entanglement growth
Zongping Gong, Lorenzo Piroli, J. Ignacio Cirac
A fundamental result in modern quantum chaos theory is the Maldacena-Shenker-Stanford upper bound on the growth of out-of-time-order correlators, whose infinite-temperature limit i…
Nuclear clocks for testing fundamental physics
E. Peik, T. Schumm, M. S. Safronova +3
The low-energy, long-lived isomer in Th, first studied in the 1970s as an exotic feature in nuclear physics, continues to inspire a multidisciplinary community of physicist…
Verification of joint measurability using phase-space quasiprobability distributions
Saleh Rahimi-Keshari, Mohammad Mehboudi, Dario De Santis +2
Measurement incompatibility is a distinguishing property of quantum physics and an essential resource for many quantum information processing tasks. We introduce an approach to ver…
Rényi free energy and variational approximations to thermal states
Giacomo Giudice, Aslı Çakan, J. Ignacio Cirac +1
We propose the construction of thermodynamic ensembles that minimize the Rényi free energy, as an alternative to Gibbs states. For large systems, the local properties of these Rény…
Quantum simulation with fully coherent dipole--dipole-interactions mediated by three-dimensional subwavelength atomic arrays
Katharina Brechtelsbauer, Daniel Malz
Quantum simulators employing cold atoms are among the most promising approaches to tackle quantum many-body problems. Nanophotonic structures are widely employed to engineer the ba…
Generalization of group-theoretic coherent states for variational calculations
Tommaso Guaita, Lucas Hackl, Tao Shi +2
We introduce new families of pure quantum states that are constructed on top of the well-known Gilmore-Perelomov group-theoretic coherent states. We do this by constructing unitari…
Inferring Nonlinear Many-Body Bell Inequalities From Average Two-Body Correlations: Systematic Approach for Arbitrary Spin-j Ensembles
Guillem Müller-Rigat, Albert Aloy, Maciej Lewenstein +1
Violating Bell's inequalities (BIs) allows one to certify the preparation of entangled states from minimal assumptions -- in a device-independent manner. Finding BIs tailored to ma…
Entangled symmetric states and copositive matrices
Carlo Marconi, Albert Aloy, Jordi Tura +1
Entanglement in symmetric quantum states and the theory of copositive matrices are intimately related concepts. For the simplest symmetric states, i.e., the diagonal symmetric (DS)…
Topological two-dimensional Floquet lattice on a single superconducting qubit
Daniel Malz, Adam Smith
Previous theoretical and experimental research has shown that current NISQ devices constitute powerful platforms for analogue quantum simulation. With the exquisite level of contro…
Transient dynamics of the quantum light retrieved from Rydberg polaritons
Auxiliadora Padrón-Brito, Roberto Tricarico, Pau Farrera +4
We study the photon statistics of weak coherent pulses propagating through a cold Rydberg atomic ensemble in the regime of Rydberg electromagnetically induced transparency. We show…
A Moment for Random Measurements
Lukas Knips
Quantum entanglement is one of the core features of quantum theory. While it is typically revealed by measurements along carefully chosen directions, here we review different metho…
Probing the indistinguishability of single photons generated by Rydberg atomic ensembles
Auxiliadora Padrón-Brito, Jan Lowinski, Pau Farrera +2
We investigate the indistinguishability of single photons retrieved from collective Rydberg excitations in cold atomic ensembles. The Rydberg spin waves are created either by off r…
Approximating the long time average of the density operator: Diagonal ensemble
Aslı Çakan, J. Ignacio Cirac, Mari Carmen Bañuls
For an isolated generic quantum system out of equilibrium, the long time average of observables is given by the diagonal ensemble, i.e. the mixed state with the same probability fo…
A network-ready random-access qubits memory
S. Langenfeld, O. Morin, M. Körber +1
Photonic qubits memories are essential ingredients of numerous quantum networking protocols. The ideal situation features quantum computing nodes that are efficiently connected to…
Matrix Product States and Projected Entangled Pair States: Concepts, Symmetries, and Theorems
Ignacio Cirac, David Perez-Garcia, Norbert Schuch +1
The theory of entanglement provides a fundamentally new language for describing interactions and correlations in many body systems. Its vocabulary consists of qubits and entangled…
Optimal Quantum Thermometry with Coarse-grained Measurements
Karen V. Hovhannisyan, Mathias R. Jørgensen, Gabriel T. Landi +3
Precise thermometry for quantum systems is important to the development of new technology, and understanding the ultimate limits to precision presents a fundamental challenge. It i…
Generation of Photonic Matrix Product States with Rydberg Atomic Arrays
Zhi-Yuan Wei, Daniel Malz, Alejandro González-Tudela +1
We show how one can deterministically generate photonic matrix product states with high bond and physical dimensions with an atomic array if one has access to a Rydberg-blockade me…
Locality of temperature and correlations in the presence of non-zero-temperature phase transitions
Senaida Hernández Santana, Andras Molnar, Christian Gogolin +2
While temperature is well understood as an intensive quantity in standard thermodynamics, it is less clear whether the same holds in the presence of strong correlations, especially…
Emergent universality in critical quantum spin chains: entanglement Virasoro algebra
Qi Hu, Adrian Franco-Rubio, Guifre Vidal
Entanglement entropy and entanglement spectrum have been widely used to characterize quantum entanglement in extended many-body systems. Given a pure state of the system and a divi…
Local optimization on pure Gaussian state manifolds
Bennet Windt, Alexander Jahn, Jens Eisert +1
We exploit insights into the geometry of bosonic and fermionic Gaussian states to develop an efficient local optimization algorithm to extremize arbitrary functions on these famili…
Few-particle scattering from localized quantum systems in spatially structured bosonic baths
Rahul Trivedi, Kevin Fischer, Shanhui Fan +1
Understanding dynamics of localized quantum systems embedded in engineered bosonic environments is a central problem in quantum optics and open quantum system theory. We present a…
Quantum coherence as a signature of chaos
Namit Anand, Georgios Styliaris, Meenu Kumari +1
We establish a rigorous connection between quantum coherence and quantum chaos by employing coherence measures originating from the resource theory framework as a diagnostic tool f…
Geometry of work fluctuations versus efficiency in microscopic thermal machines
Harry J. D. Miller, Mohammad Mehboudi
When engineering microscopic machines, increasing efficiency can often come at a price of reduced reliability due to the impact of stochastic fluctuations. Here we develop a genera…
Gaussian state entanglement witnessing through lossy compression
Waldemar Klobus, Pawel Cieslinski, Lukas Knips +2
We propose a method to witness entanglement between two continuous-variable systems in a Gaussian state. Its key ingredient is a local lossy state transfer from the original spatia…