Search Results for author: Guang Hao Low

Found 5 papers, 1 papers with code

Prospects of Quantum Computing for Molecular Sciences

no code implementations19 Feb 2021 Hongbin Liu, Guang Hao Low, Damian S. Steiger, Thomas Häner, Markus Reiher, Matthias Troyer

Molecular science is governed by the dynamics of electrons, atomic nuclei, and their interaction with electromagnetic fields.

Quantum Physics

Well-conditioned multiproduct Hamiltonian simulation

2 code implementations26 Jul 2019 Guang Hao Low, Vadym Kliuchnikov, Nathan Wiebe

We introduce well-conditioned multiproduct formulas, which are a linear combination of product formulas, where a single step has polynomial cost $\mathcal{O}(m^2\log{(m)})$ and succeeds with probability $\Omega(1/\operatorname{log}^2{(m)})$.

Quantum Physics Computational Physics

Q# and NWChem: Tools for Scalable Quantum Chemistry on Quantum Computers

no code implementations1 Apr 2019 Guang Hao Low, Nicholas P. Bauman, Christopher E. Granade, Bo Peng, Nathan Wiebe, Eric J. Bylaska, Dave Wecker, Sriram Krishnamoorthy, Martin Roetteler, Karol Kowalski, Matthias Troyer, Nathan A. Baker

Fault-tolerant quantum computation promises to solve outstanding problems in quantum chemistry within the next decade.

Quantum Physics Emerging Technologies Chemical Physics Computational Physics

Downfolding of many-body Hamiltonians using active-space models: extension of the sub-system embedding sub-algebras approach to unitary coupled cluster formalisms

no code implementations5 Feb 2019 Nicholas P. Bauman, Eric J. Bylaska, Sriram Krishnamoorthy, Guang Hao Low, Nathan Wiebe, Karol Kowalski

In analogy to the standard single-reference SES-CC formalism, its unitary CC extension allows one to include the dynamical (outside the active space) correlation effects in an SES induced complete active space (CAS) effective Hamiltonian.

Quantum Physics

Trading T-gates for dirty qubits in state preparation and unitary synthesis

no code implementations3 Dec 2018 Guang Hao Low, Vadym Kliuchnikov, Luke Schaeffer

We present a quantum algorithm for preparing any dimension-$N$ pure quantum state specified by a list of $N$ classical numbers, that realizes a trade-off between space and T-gates.

Quantum Physics

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