Quantum computers may soon tackle problems that stump today’s powerful supercomputers—even when riddled with errors. Computation and accuracy go hand in hand. But a new collaboration between IBM and UC Berkeley showed that perfection isn’t […]
Category: singularityhub
Quantum 7, 1041 (2023). https://doi.org/10.22331/q-2023-06-12-1041 We consider a class of translation-invariant 2D tensor network states with a stabilizer symmetry, which we call stabilizer PEPS. The cluster state, GHZ state, and states in the toric code […]
Quantum 7, 1040 (2023). https://doi.org/10.22331/q-2023-06-12-1040 Quantum simulation of strongly correlated systems is potentially the most feasible useful application of near-term quantum computers. Minimizing quantum computational resources is crucial to achieving this goal. A promising class […]
Quantum 7, 1039 (2023). https://doi.org/10.22331/q-2023-06-12-1039 In adiabatic quantum computing finding the dependence of the gap of the Hamiltonian as a function of the parameter varied during the adiabatic sweep is crucial in order to optimize […]
A weird and wonderful array of technologies are competing to become the standard-bearer for quantum computing. The latest contender wants to encode quantum information in sound waves. One thing all quantum computers have in common […]
Quantum 7, 1038 (2023). https://doi.org/10.22331/q-2023-06-07-1038 Quantum correlations and Wigner negativity are two important signatures of nonclassicality in continuous-variable quantum systems. In this work, we investigate how both are intertwined in the context of the conditional […]
Quantum 7, 1037 (2023). https://doi.org/10.22331/q-2023-06-07-1037 Belief propagation (BP) is well-known as a low complexity decoding algorithm with a strong performance for important classes of quantum error correcting codes, e.g. notably for the quantum low-density parity […]
Quantum 7, 1036 (2023). https://doi.org/10.22331/q-2023-06-07-1036 Given a dataset of input states, measurements, and probabilities, is it possible to efficiently predict the measurement probabilities associated with a quantum circuit? Recent work of Caro and Datta (2020) […]
Quantum 7, 1035 (2023). https://doi.org/10.22331/q-2023-06-07-1035 While there is general consensus on the definition of incompatible POVMs, moving up to the level of instruments one finds a much less clear situation, with mathematically different and logically […]
Quantum 7, 1034 (2023). https://doi.org/10.22331/q-2023-06-06-1034 Error mitigation is an essential component of achieving a practical quantum advantage in the near term, and a number of different approaches have been proposed. In this work, we recognize […]
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