Bryan T. Gard

TL;DR: In this article, the authors proposed a state preparation algorithm for the variational quantum eigensolver (VQE), which is one of the most promising approaches for performing chemistry simulations using noisy intermediate-scale quantum processors.

TL;DR: In this paper, the phase sensitivity with parity detection on an SU(1,1) interferometer with a coherent state combined with a squeezed vacuum state was theoretically investigated, and it was shown that the sensitivity of phase estimation approaches the Heisenberg limit.

TL;DR: In this paper, the authors consider a single atom that interacts with a superconducting microwave resonator on one hand and an optical cavity on the other and use numerical optimization to determine the likely rates for reliable quantum communication that could be achieved with this device.

TL;DR: In this article, the authors present efficient state preparation circuits that respect particle number, total spin, spin projection, and time-reversal symmetries, and show how to construct these circuits for arbitrary numbers of orbitals, electrons and spin quantum numbers.

TL;DR: In this paper, the authors discuss the history of linear optics quantum computing and discuss the feasibility of building a boson-sampling device using existing technology, and summarize the boson sampling formalism, discuss what a sampling problem is, explain why bosonsampling is easier than linear optical quantum computing,and discuss the Extended Church-Turing thesis.