activity
20032021
most citedInstability in cosmological topologically massive gravity at the chiral point

258 citations · 779 across the 22 of their papers we have counts for

collaborators

22 papers

quant-ph2021

Conjugate Logic

Niklas Johansson, Felix Huber, Jan-Åke Larsson

We propose a conjugate logic that can capture the behavior of quantum and quantum-like systems. The proposal is similar to the more generic concept of epistemic logic: it encodes k…

quant-ph2019★ 17 cited

Quantum Simulation Logic, Oracles, and the Quantum Advantage

Niklas Johansson, Jan-Åke Larsson

Query complexity is a common tool for comparing quantum and classical computation, and it has produced many examples of how quantum algorithms differ from classical ones. Here we i…

quant-ph2017★ 7 cited

Realization of Shor's Algorithm at Room Temperature

Niklas Johansson, Jan-Åke Larsson

Shor's algorithm can find prime factors of a large number more efficiently than any known classical algorithm. Understanding the properties that gives the speedup is essential for…

quant-ph2015★ 28 cited

Efficient classical simulation of the Deutsch-Jozsa and Simon's algorithms

Niklas Johansson, Jan-Åke Larsson

A long-standing aim of quantum information research is to understand what gives quantum computers their advantage. This requires separating problems that need genuinely quantum res…

quant-ph2015★ 1 cited

Efficient classical simulation of the Deutsch-Jozsa algorithm

Niklas Johansson, Jan-Åke Larsson

In 1985, David Deutsch challenged the Church-Turing thesis by stating that his quantum model of computation "could, in principle, be built and would have many remarkable properties…

hep-th2012★ 10 cited

Lobachevsky holography in conformal Chern-Simons gravity

Mario Bertin, Sabine Ertl, Hossein Ghorbani +3

We propose Lobachevsky boundary conditions that lead to asymptotically H^2xR solutions. As an example we check their consistency in conformal Chern-Simons gravity. The canonical ch…