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12 papers · 2 filters
Simulating Hamiltonian dynamics with a truncated Taylor series
Dominic W. Berry, Andrew M. Childs, Richard Cleve +2
We describe a simple, efficient method for simulating Hamiltonian dynamics on a quantum computer by approximating the truncated Taylor series of the evolution operator. Our method…
Landau-like states in neutral particles
Saikat Banerjee, Hans Ågren, Alexander V. Balatsky
We show the emergence of a new type of dispersion relation for neutral atoms with an interesting similarity with the spectrum of 2-dimensional electrons in an applied perpendicular…
Multiscale dynamics of open three-level quantum systems with two quasi-degenerate levels
Marco Merkli, Haifeng Song, Gennady Berman
We consider a three-level quantum system interacting with a bosonic thermal reservoir. Two energy levels of the system are nearly degenerate but well separated from the third one.…
Induced Coherence, Vacuum Fields, and Complementarity in Biphoton Generation
A. Heuer, R. Menzel, P. W. Milonni
We describe spontaneous parametric down-conversion experiments in which induced coherence across two coupled interferometers results in high-visibility single-photon interference.…
Fast Quantum Methods for Optimization
Sergio Boixo, Gerardo Ortiz, Rolando Somma
Discrete combinatorial optimization consists in finding the optimal configuration that minimizes a given discrete objective function. An interpretation of such a function as the en…
Adiabatic tracking of quantum many-body dynamics
Hamed Saberi, Tomáš Opatrný, Klaus Mølmer +1
The nonadiabatic dynamics of a many-body system driven through a quantum critical point can be controlled using counterdiabatic driving, where the formation of excitations is suppr…