831 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Technical University of MunichDE615 papers
- Ludwig-Maximilians-Universität MünchenDE442 papers
- Max Planck Institute of Quantum OpticsDE404 papers
- Bavarian Academy of Sciences and HumanitiesDE95 papers
- Harvard UniversityUS93 papers
- Imperial College LondonGB90 papers
- Walther Meissner InstituteDE84 papers
- Centre National de la Recherche ScientifiqueFR75 papers
- Center for NanoScienceDE69 papers
- ETH ZurichCH49 papers
- University of NottinghamGB41 papers
- Max Planck Institute for the Physics of Complex SystemsDE40 papers
55 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…
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…
Three qubits in less than three baths: Beyond two-body system-bath interactions in quantum refrigerators
Ahana Ghoshal, Sreetama Das, Amit Kumar Pal +2
We show that quantum absorption refrigerators, which have traditionally been studied as of three qubits, each of which is connected to a thermal reservoir, can also be constructed…
lattice gauge theories and Kitaev's toric code: A scheme for analog quantum simulation
Lukas Homeier, Christian Schweizer, Monika Aidelsburger +2
Kitaev's toric code is an exactly solvable model with -topological order, which has potential applications in quantum computation and error correction. However, a dir…
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…
Infinite-Dimensional Programmable Quantum Processors
Martina Gschwendtner, Andreas Winter
A universal programmable quantum processor uses program quantum states to apply an arbitrary quantum channel to an input state. We generalize the concept of a finite-dimensional pr…
Programmability of covariant quantum channels
Martina Gschwendtner, Andreas Bluhm, Andreas Winter
A programmable quantum processor uses the states of a program register to specify one element of a set of quantum channels which is applied to an input register. It is well-known t…
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…
Characterization and tomography of a hidden qubit
M. Pechal, G. Salis, M. Ganzhorn +3
In circuit-based quantum computing, the available gate set typically consists of single-qubit gates acting on each individual qubit and at least one entangling gate between pairs o…
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…
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…
Resource theory of heat and work with non-commuting charges
Zahra Baghali Khanian, Manabendra Nath Bera, Arnau Riera +2
We consider a theory of quantum thermodynamics with multiple conserved quantities (or charges). To this end, we generalize the seminal results of Sparaciari et al. [PRA 96:052112,…
On contraction coefficients, partial orders and approximation of capacities for quantum channels
Christoph Hirche, Cambyse Rouzé, Daniel Stilck França
The data processing inequality is the most basic requirement for any meaningful measure of information. It essentially states that distinguishability measures between states decrea…
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…
Optimal two-photon excitation of bound states in non-Markovian waveguide QED
Rahul Trivedi, Daniel Malz, Shanhui Fan +1
Bound states arise in waveguide QED systems with a strong frequency-dependence of the coupling between emitters and photonic modes. While exciting such bound-states with single pho…
Real- and imaginary-time evolution with compressed quantum circuits
Sheng-Hsuan Lin, Rohit Dilip, Andrew G. Green +2
The current generation of noisy intermediate scale quantum computers introduces new opportunities to study quantum many-body systems. In this paper, we show that quantum circuits c…
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…
Necessary Criteria for Markovian Divisibility of Linear Maps
Matthias C. Caro, Benedikt Graswald
Characterizing those quantum channels that correspond to Markovian time evolutions is an open problem in quantum information theory, even different notions of quantum Markovianity…
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…
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…
Fast computation of spherical phase-space functions of quantum many-body states
Bálint Koczor, Robert Zeier, Steffen J. Glaser
Quantum devices are preparing increasingly more complex entangled quantum states. How can one effectively study these states in light of their increasing dimensions? Phase spaces s…
A gauge redundancy-free formulation of compact QED with dynamical matter for quantum and classical computations
Julian Bender, Erez Zohar
We introduce a way to express compact quantum electrodynamics with dynamical matter on two- and three-dimensional spatial lattices in a gauge redundancy-free manner while preservin…