37 citations · 105 across the 12 of their papers we have counts for
8 papers · 1 filter
Robust Lindbladian Estimation for Quantum Dynamics
Yinchen Liu, James R. Seddon, Tamara Kohler +2
We revisit the problem of fitting Lindbladian models to the outputs of quantum process tomography. A sequence of prior theoretical works approached the problem by considering wheth…
Security of quantum position-verification limits Hamiltonian simulation via holography
Harriet Apel, Toby Cubitt, Patrick Hayden +2
We investigate the link between quantum position-verification (QPV) and holography established in [MPS19] using holographic quantum error correcting codes as toy models. By inserti…
Gapped Clique Homology on weighted graphs is -hard and contained in
Robbie King, Tamara Kohler
We study the complexity of a classic problem in computational topology, the homology problem: given a description of some space and an integer , decide if contains a …
Fitting time-dependent Markovian dynamics to noisy quantum channels
Emilio Onorati, Tamara Kohler, Toby S. Cubitt
Understanding how to characterise and mitigate errors is a key challenge in developing reliable quantum architecture for near-term applications. Recent work (arXiv:2103.17243) prov…
Clique Homology is QMA1-hard
Marcos Crichigno, Tamara Kohler
We tackle the long-standing question of the computational complexity of determining homology groups of simplicial complexes, a fundamental task in computational topology, posed by…
Fitting quantum noise models to tomography data
Emilio Onorati, Tamara Kohler, Toby S. Cubitt
The presence of noise is currently one of the main obstacles to achieving large-scale quantum computation. Strategies to characterise and understand noise processes in quantum hard…
General conditions for universality of Quantum Hamiltonians
Tamara Kohler, Stephen Piddock, Johannes Bausch +1
Recent work has demonstrated the existence of universal Hamiltonians - simple spin lattice models that can simulate any other quantum many body system to any desired level of accur…
Translationally-Invariant Universal Quantum Hamiltonians in 1D
Tamara Kohler, Stephen Piddock, Johannes Bausch +1
Recent work has characterised rigorously what it means for one quantum system to simulate another, and demonstrated the existence of universal Hamiltonians -- simple spin lattice H…