187 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of BristolGB11 papers
- Virginia TechUS6 papers
- Computercraft (United States)US5 papers
- University of EdinburghGB4 papers
- Freie Universität BerlinDE3 papers
- Lawrence Berkeley National LaboratoryUS3 papers
- University College LondonGB3 papers
- University of CambridgeGB3 papers
- University of Maryland, College ParkUS3 papers
- California Institute of TechnologyUS2 papers
- Helmholtz-Zentrum Berlin für Materialien und EnergieDE2 papers
- Joint Center for Quantum Information and Computer ScienceUS2 papers
11 papers · 2 filters
Laplace expansions and tree decompositions: A faster polytime algorithm for shallow nearest-neighbour Boson Sampling
Samo Novák, Raúl García-Patrón
In a Boson Sampling quantum optical experiment we send individual photons into an -mode interferometer and we measure the occupation pattern on the output. The statistics of…
Entropy density benchmarking of near-term quantum circuits
Marine Demarty, James Mills, Kenza Hammam +1
Understanding the limitations imposed by noise on current and next-generation quantum devices is a crucial step toward demonstrating practical quantum advantage. In this work, we i…
Boundaries for quantum advantage with single photons and loop-based time-bin interferometers
Samo Novák, David D. Roberts, Alexander Makarovskiy +2
Loop-based boson samplers interfere photons in the time degree of freedom using a sequence of delay lines. Since they require few hardware components while also allowing for long-r…
Chasing shadows with Gottesman-Kitaev-Preskill codes
Jonathan Conrad, Jens Eisert, Steven T. Flammia
We consider the task of performing shadow tomography of a logical subsystem defined via the Gottesman-Kitaev-Preskill (GKP) error correcting code. Our protocol does not require the…
Fiber Bundle Fault Tolerance of GKP Codes
Ansgar G. Burchards, Steven T. Flammia, Jonathan Conrad
We investigate multi-mode GKP (Gottesman--Kitaev--Preskill) quantum error-correcting codes from a geometric perspective. First, we construct their moduli space as a quotient of gro…
Efficient self-consistent learning of gate set Pauli noise
Senrui Chen, Zhihan Zhang, Liang Jiang +1
Understanding quantum noise is an essential step towards building practical quantum information processing systems. Pauli noise is a useful model that has been widely applied in qu…
Approximating dynamical correlation functions with constant depth quantum circuits
Reinis Irmejs, Raul A. Santos
One of the most important quantities characterizing the microscopic properties of quantum systems are dynamical correlation functions. These correlations are obtained by time-evolv…
How pure can we go with adiabatic state manipulation?
Raul A. Santos, Alex Kamenev, Yuval Gefen
Dissipative systems with decoherence free subspaces, a.k.a. dark spaces (DSs), can be used to protect quantum information. At the same time, dissipation is expected to give rise to…
Exponential improvements in the simulation of lattice gauge theories using near-optimal techniques
Mason L. Rhodes, Michael Kreshchuk, Shivesh Pathak
We report a first-of-its-kind analysis on post-Trotter simulation of U(1), SU(2) and SU(3) lattice gauge theories including fermions in arbitrary spatial dimension. We provide expl…
Unveiling quantum phase transitions from traps in variational quantum algorithms
Chenfeng Cao, Filippo Maria Gambetta, Ashley Montanaro +1
Understanding quantum phase transitions in physical systems is fundamental to characterize their behavior at low temperatures. Achieving this requires both accessing good approxima…
Efficient and practical Hamiltonian simulation from time-dependent product formulas
Jan Lukas Bosse, Andrew M. Childs, Charles Derby +3
In this work we propose an approach for implementing time-evolution of a quantum system using product formulas. The quantum algorithms we develop have provably better scaling (in t…