3.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of OsloNO153 papers
- Centre National de la Recherche ScientifiqueFR139 papers
- KTH Royal Institute of TechnologySE92 papers
- SINTEFNO92 papers
- Johannes Gutenberg University MainzDE57 papers
- Delft University of TechnologyNL56 papers
- University of CopenhagenDK55 papers
- ETH ZurichCH46 papers
- Tomsk State Pedagogical UniversityRU44 papers
- University of CambridgeGB41 papers
- Stockholm UniversitySE40 papers
- Eindhoven University of TechnologyNL38 papers
145 papers · 1 filter
Inequivalence of Landau-Lifshitz and Landau-Lifshitz-Gilbert dynamics for a single quantum spin
Yuefei Liu, Olle Eriksson, Erik Sjöqvist
We examine the relation between the quantum Landau-Lifshitz equation (-LL) [Phys. Rev. Lett. 110, 147201 (2013)] and quantum Landau-Lifshitz-Gilbert equation (-LLG) [Phys. Re…
Real-time adaptive tracking of fluctuating relaxation rates in superconducting qubits
Fabrizio Berritta, Jacob Benestad, Jan A. Krzywda +17
The fidelity of operations on a solid-state quantum processor is fundamentally bounded by environmental decoherence. Characterizing environmental fluctuations is challenging becaus…
Highly Entangled 2D Ground States: Tensor Network, Order Parameter and Correlation
Olai B. Mykland, Zhao Zhang
In this article we present analytical results on the exact tensor network representations and correlation functions of the first examples of 2D ground states with quantum phase tra…
Efficient Qubit Calibration by Binary-Search Hamiltonian Tracking
Fabrizio Berritta, Jacob Benestad, Lukas Pahl +14
We present and experimentally implement a real-time protocol for calibrating the frequency of a resonantly driven qubit, achieving exponential scaling in calibration precision with…
Quantum annealing applications, challenges and limitations for optimisation problems compared to classical solvers
Finley Alexander Quinton, Per Arne Sevle Myhr, Mostafa Barani +2
Quantum computing is rapidly advancing, harnessing the power of qubits' superposition and entanglement for computational advantages over classical systems. However, scalability pos…
Fractals and spontaneous symmetry breaking with type-B Goldstone modes: a perspective from entanglement
Huan-Qiang Zhou, Qian-Qian Shi, John O. Fjærestad +1
The one-dimensional spin- ferromagnetic Heisenberg model, as a paradigmatic example for spontaneous symmetry breaking (SSB) with type-B Goldstone modes (GMs), is e…
CIRCUS: an autonomous control system for antimatter, atomic and quantum physics experiments
Marco Volponi, Saiva Huck, Ruggero Caravita +49
A powerful and robust control system is a crucial, often neglected, pillar of any modern, complex physics experiment that requires the management of a multitude of different device…
Collective Strong Coupling Modifies Aggregation and Solvation
Matteo Castagnola, Tor S. Haugland, Enrico Ronca +2
Intermolecular interactions are pivotal for aggregation, solvation, and crystallization. We demonstrate that the collective strong coupling of several molecules to a single optical…
Distribution of genuine high-dimensional entanglement over 10.2 km of noisy metropolitan atmosphere
Lukas Bulla, Kristian Hjorth, Oskar Kohout +9
In a recent quantum key distribution experiment, high-dimensional protocols were used to show an improved noise resistance over a 10.2 km free-space channel. One of the unresolved…
Connection between time-splitting parameter and surface tension in Casimir problems. Related phenomena in relativistic collapse of a singular shell
Iver Brevik
We discuss four different, though related, fundamental topics related to the Casimir effect: 1) We suggest that the application of Casimir theory to real dielectric materials, thus…
Non-local temporal interferometry for highly resilient free-space quantum communication
Lukas Bulla, Matej Pivoluska, Kristian Hjorth +9
Entanglement distribution via photons over long distances enables many applications, including quantum key distribution (QKD), which provides unprecedented privacy. The inevitable…
Quantum magnonics: when magnon spintronics meets quantum information science
H. Y. Yuan, Yunshan Cao, Akashdeep Kamra +2
Spintronics and quantum information science are two promising candidates for innovating information processing technologies. The combination of these two fields enables us to build…
Tunable anisotropic quantum Rabi model via a magnon--spin-qubit ensemble
Ida C. Skogvoll, Jonas Lidal, Jeroen Danon +1
The ongoing rapid progress towards quantum technologies relies on new hybrid platforms optimized for specific quantum computation and communication tasks, and researchers are striv…
Efficient quantum algorithm for dissipative nonlinear differential equations
Jin-Peng Liu, Herman Øie Kolden, Hari K. Krovi +3
Nonlinear differential equations model diverse phenomena but are notoriously difficult to solve. While there has been extensive previous work on efficient quantum algorithms for li…
Efficient encoding of the weighted MAX k-CUT on a quantum computer using QAOA
Franz Georg Fuchs, Herman Øie Kolden, Niels Henrik Aase +1
The weighted MAX k-CUT problem consists of finding a k-partition of a given weighted undirected graph G(V,E) such that the sum of the weights of the crossing edges is maximized. Th…
Casimir force between ideal metal plates in a chiral vacuum
Johan S. Høye, Iver Brevik
We calculate the Casimir force between two parallel ideal metal plates when there is an intervening chiral medium present. Making use of methods of quantum statistical mechanics we…
Quantum Poker A game for quantum computers suitable for benchmarking error mitigation techniques on NISQ devices
Franz G. Fuchs, Vemund Falch, Christian Johnsen
Quantum computers are on the verge of becoming a commercially available reality. They represent a paradigm shift in computing, with a steep learning gradient. The creation of games…
Casimir Friction Between a Magnetic and a Dielectric Material, in the Nonretarded Limit
Johan S. Høye, Iver Brevik
The repulsive nature of the static Casimir force between two half-spaces, one perfectly dielectric and the other purely magnetic, has been known since Boyer's work [T. H. Boyer, Ph…
Optimal choice of state tomography quorum formed by projection operators
Violeta N. Ivanova-Rohling, Niklas Rohling
A minimal set of measurement operators for quantum state tomography has in the non-degenerate case ideally eigenbases which are mutually unbiased. This is different for the degener…
Performance Analysis of Quantum Channels
Fengyou Sun
We study the quality of service in quantum channels. We regard the quantum channel as a queueing system, and present queueing analysis of both the classical information transmissio…
Repulsive Casimir Force
Johan S. Høye, Iver Brevik
The Casimir force between two parallel thick plates, one perfectly dielectric, the other purely magnetic, has been calculated long ago by Boyer [T. H. Boyer, Phys. Rev. A {\bf 9},…
Creation of entangled atomic states by an analogue of the Dynamical Casimir Effect
K. Lange, J. Peise, B. Lücke +7
If the boundary conditions of the quantum vacuum are changed in time, quantum field theory predicts that real, observable particles can be created in the initially empty modes. Her…
Causality in Quantum Field Theory with Classical Sources - Quantum Electrodynamics
Bo-Sture K. Skagerstam, Karl-Erik Eriksson, Per K. Rekdal
In an exact quantum-mechanical framework, we show that expectation values of the second-quantized electro-magnetic fields in the Coulomb gauge, and in the presence of classical sou…
Casimir Force and its Relation to Surface Tension
J. S. Høye, I. Brevik
From energy considerations there is reason to expect that the work done by Casimir forces during a slow displacement of the parallel plates reflects the free energy of the surface…