6 papers
Optimal and improved gate decompositions for accelerated classical simulation of near-Gaussian fermionic circuits
Beatriz Dias, Jan Lukas Bosse, James R. Seddon
Fermionic Gaussian circuits can be simulated efficiently on a classical computer, but become universal when supplemented with non-Gaussian operations. Similar to stabilizer circuit…
Composable logical gate error in approximate quantum error correction: reexamining gate implementations in Gottesman-Kitaev-Preskill codes
Lukas Brenner, Beatriz Dias, Robert Koenig
Quantifying the accuracy of logical gates is paramount in approximate error correction, where perfect implementations are often unachievable with the available set of physical oper…
Classical simulation of non-Gaussian bosonic circuits
Beatriz Dias, Robert Koenig
We propose efficient classical algorithms which (strongly) simulate the action of bosonic linear optics circuits applied to superpositions of Gaussian states. Our approach relies o…
Trading modes against energy
Lukas Brenner, Beatriz Dias, Robert Koenig
We ask how much energy is required to weakly simulate an -qubit quantum circuit (i.e., produce samples from its output distribution) by a unitary circuit in a hybrid qubit-oscil…
Qubit-oscillator-based gate implementations for approximate Gottesman-Kitaev-Preskill codes
Lukas Brenner, Beatriz Dias, Robert Koenig
We consider hybrid qubit-oscillator systems together with Gaussian, multi-qubit as well as qubit-controlled Gaussian unitaries. We propose implementations of logical gates for appr…
On the sampling complexity of coherent superpositions
Beatriz Dias, Robert Koenig
We consider the problem of sampling from the distribution of measurement outcomes when applying a POVM to a superposition of …