Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR640 papers
- The University of SydneyAU475 papers
- University of BirminghamGB381 papers
- University of CopenhagenDK357 papers
- Instituto de Astrofísica de CanariasES341 papers
- Universidad de La LagunaES308 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR304 papers
- California Institute of TechnologyUS282 papers
- Center for Astrophysics Harvard & SmithsonianUS281 papers
- European Southern ObservatoryCL265 papers
- Astrophysique, Instrumentation et ModélisationFR259 papers
- Osservatorio Astronomico di PadovaIT258 papers
28 papers · 2 filters
Integration of the Berry curvature on a qubit state manifold by coupling to a quantum meter system
Peng Xu, Shi-Liang Zhu, Klaus Mølmer +1
We present a scheme that allows integration of the Berry curvature and thus determination of the Chern number of a qubit eigenstate manifold. Our proposal continuously couples the…
Quantum thermal transistor in superconducting circuits
Marco Majland, Kasper Sangild Christensen, Nikolaj Thomas Zinner
Logical devices based on electrical currents are ubiquitous in modern society. However, digital logic does have some drawbacks such as a relatively high power consumption. It is th…
Single-step implementation of high fidelity -bit Toffoli gate
S. E. Rasmussen, K. Groenland, R. Gerritsma +2
The family of -bit Toffoli gates, with the two-bit Toffoli gate as the figurehead, are of great interest in quantum information as they can be used as universal gates and in qua…
A coherent router for quantum networks
K. S. Christensen, S. E. Rasmussen, D. Petrosyan +1
Scalable quantum information processing will require quantum networks of qubits with the ability to coherently transfer quantum states between the desired sender and receiver nodes…
Roadmap on STIRAP applications
Klaas Bergmann, Hanns-Christoph Nägerl, Cristian Panda +31
STIRAP (Stimulated Raman Adiabatic Passage) is a powerful laser-based method, usually involving two photons, for efficient and selective transfer of population between quantum stat…
Subradiant Dimer Excitations of Emitter Chains Coupled to a 1D Waveguide
Yu-Xiang Zhang, Chuan Yu, Klaus Mølmer
This Letter shows that chains of optical or microwave emitters coupled to a 1D waveguide support subradiant states with close pairs of excited emitters, which have longer lifetimes…
Time-Optimal Control of Collisional Gates in Ultracold Atomic Systems
Jesper Hasseriis Mohr Jensen, Jens Jakob Sørensen, Klaus Mølmer +1
We use quantum optimal control to identify fast collision-based two-qubit gates in ultracold atoms. We show that a significant speed up can be achieved by opti…
Global optimization of quantum dynamics with AlphaZero deep exploration
Mogens Dalgaard, Felix Motzoi, Jens Jakob Sorensen +1
While a large number of algorithms for optimizing quantum dynamics for different objectives have been developed, a common limitation is the reliance on good initial guesses, being…
Revealing the strokes of autonomous quantum heat engines with work and heat fluctuations
Katerina Verteletsky, Klaus Moelmer
We analyze an autonomous thermoelectric engine composed of two superconducting qubits coupled to separate heat baths and connected by a Josephson junction. Work and heat are proces…
Quantum duets working as autonomous thermal motors
Michael Drewsen, Alberto Imparato
We study the dynamic properties of a thermal autonomous machine made up of two quantum Brownian particles, each of which is in contact with an environment at different temperature…
Quantum versus classical switching dynamics of driven-dissipative Kerr resonators
Christian Kraglund Andersen, Archana Kamal, Nicholas A. Masluk +3
We report a first-principles study of the driven dissipative dynamics for Kerr oscillators in the mesoscopic regime. This regime is characterized by large Kerr nonlinearity, realiz…
Single-shot determination of quantum phases via continuous measurements
Aniket Patra, Lukas F. Buchmann, Felix Motzoi +3
We propose that weak continuous probing may be exploited to determine and define quantum phases of complex many-body systems based on the measurement record alone. We test the resu…
Stable adiabatic quantum batteries
Alan C. Santos, Barış Çakmak, Steve Campbell +1
With the advent of quantum technologies comes the requirement of building quantum components able to store energy to be used whenever necessary, i.e. quantum batteries. In this pap…
Rapid cooling of a strain-coupled oscillator by optical phaseshift measurement
Signe Seidelin, Yann Le Coq, Klaus Mølmer
We consider an optical probe that interacts with an ensemble of rare earth ions doping a materialin the shape of a cantilever. By optical spectral hole burning, the inhomogeneously…
Nonquantum Information Gain from Higher-order Correlation Functions
Peter Grünwald
Nonlinear correlation functions are at the heart of quantum theory. The second-order correlation function has been a cornerstone of quantum optics since over half a ce…
Rotational state changes in collisions of diatomic molecular ions with atomic ions
J. Martin Berglund, Michael Drewsen, Christiane P. Koch
We investigate rotational state changes in a single collision of diatomic molecular ions, polar or apolar, with an atomic ion. Rotational state changes may occur since the angular…
Microwave to optical conversion with atoms on a superconducting chip
David Petrosyan, Klaus Mølmer, József Fortágh +1
We describe a scheme to coherently convert a microwave photon of a superconducting co-planar waveguide resonator to an optical photon emitted into a well-defined temporal and spati…
Time-resolved Spectroscopy of Interparticle Coulombic Decay Processes
Elke Fasshauer, Lars Bojer Madsen
We report theory for time-resolved spectator resonant Interparticle Coulombic Decay (ICD) processes. Following excitation by a short extreme ultraviolet pulse, the spectrum of the…
Collective dynamics of inhomogeneously broadened emitters coupled to an optical cavity with narrow linewidth
Kamanasish Debnath, Yuan Zhang, Klaus Mølmer
We study collective effects in an inhomogeneously broadened ensemble of two-level emitters coupled to an optical cavity with narrow linewidth. Using second order mean field theory…
Coherent spectral hole burning and qubit isolation by stimulated Raman adiabatic passage
Kamanasish Debnath, Alexander Holm Kiilerich, Albert Benseny +1
We describe how stimulated Raman adiabatic passage (STIRAP) can be applied to create spectral holes in an inhomogeneously broadened system. Due to the robustness of STIRAP, our pro…
Polariton Exchange Interactions in Multichannel Optical Networks
Mohammad Khazali, Callum R. Murray, Thomas Pohl
We examine the dynamics of Rydberg polaritons with dipolar interactions that propagate in multiple spatial modes. The dipolar excitation exchange between different Rydberg states m…
State transfer in an inhomogeneous spin chain
Michael Iversen, Rafael Emilio Barfknecht, Angela Foerster +1
We present an analytical study of state transfer in a spin chain in the presence of an inhomogeneous set of exchange coefficients. We initially consider the homogeneous case and de…
Correlation Picture Approach to Open-Quantum-System Dynamics
S. Alipour, A. T. Rezakhani, A. P. Babu +3
We introduce a new dynamical picture, referred to as correlation picture,' which connects a correlated state to its uncorrelated counterpart. Using this picture allows us to derive…
Cavity Quantum Electrodynamics with Frequency-Dependent Reflectors
Ondřej Černotík, Aurélien Dantan, Claudiu Genes
We present a general framework for cavity quantum electrodynamics with strongly frequency-dependent mirrors. The method is applicable to a variety of reflectors exhibiting sharp in…