953 citations · 6.3k across the 74 of their papers we have counts for
7 papers · 2 filters
Universal fidelity reduction of quantum operations from weak dissipation
Tahereh Abad, Jorge Fernández-Pendás, Anton Frisk Kockum +1
Quantum information processing is in real systems often limited by dissipation, stemming from remaining uncontrolled interaction with microscopic degrees of freedom. Given recent e…
A Shortcut to Self-Consistent Light-Matter Interaction and Realistic Spectra from First-Principles
Christian Schäfer, Göran Johansson
We introduce a simple approach how an electromagnetic environment can be efficiently embedded into state-of-the-art electronic structure methods, taking the form of radiation-react…
Fast multi-qubit gates through simultaneous two-qubit gates
Xiu Gu, Jorge Fernández-Pendás, Pontus Vikstål +8
Near-term quantum computers are limited by the decoherence of qubits to only being able to run low-depth quantum circuits with acceptable fidelity. This severely restricts what qua…
Quantum efficiency, purity and stability of a tunable, narrowband microwave single-photon source
Yong Lu, Andreas Bengtsson, Jonathan J. Burnett +7
We demonstrate an on-demand source of microwave single photons with 71--99\% intrinsic quantum efficiency. The source is narrowband (300\unite{kHz}) and tuneable over a 600 MHz ran…
A Hybrid Quantum-Classical Heuristic to solve large-scale Integer Linear Programs
Marika Svensson, Martin Andersson, Mattias Grönkvist +4
We present a method that integrates any quantum algorithm capable of finding solutions to integer linear programs into the Branch-and-Price algorithm, which is regularly used to so…
Non-Markovian steady states of a driven two-level system
Andreas Ask, Göran Johansson
We show that an open quantum system in a non-Markovian environment can reach steady states that it cannot reach in a Markovian environment. As these steady states are unique for th…