



@article {2453,
	title = {Towards analog quantum simulations of lattice gauge theories with trapped ions},
	journal = {Physical Review Research },
	volume = {2},
	year = {2020},
	month = {4/8/2020},
	abstract = {<p>Gauge field theories play a central role in modern physics and are at the heart of the Standard Model of elementary particles and interactions. Despite significant progress in applying classical computational techniques to simulate gauge theories, it has remained a challenging task to compute the real-time dynamics of systems described by gauge theories. An exciting possibility that has been explored in recent years is the use of highly-controlled quantum systems to simulate, in an analog fashion, properties of a target system whose dynamics are difficult to compute. Engineered atom-laser interactions in a linear crystal of trapped ions offer a wide range of possibilities for quantum simulations of complex physical systems. Here, we devise practical proposals for analog simulation of simple lattice gauge theories whose dynamics can be mapped onto spin-spin interactions in any dimension. These include 1+1D quantum electrodynamics, 2+1D Abelian Chern-Simons theory coupled to fermions, and 2+1D pure Z2 gauge theory. The scheme proposed, along with the optimization protocol applied, will have applications beyond the examples presented in this work, and will enable scalable analog quantum simulation of Heisenberg spin models in any number of dimensions and with arbitrary interaction strengths.</p>},
	doi = {https://doi.org/10.1103/PhysRevResearch.2.023015},
	url = {https://arxiv.org/abs/1908.03210},
	author = {Zohreh Davoudi and Mohammad Hafezi and Christopher Monroe and Guido Pagano and Alireza Seif and Andrew Shaw}
}
@article {2507,
	title = {Thermal management and non-reciprocal control of phonon flow via optomechanics},
	journal = {Nat. Commun.},
	volume = {9(1)},
	year = {2018},
	month = {2018/3/23},
	abstract = {<p>Engineering phonon transport in physical systems is a subject of interest in the study of materials and plays a crucial role in controlling energy and heat transfer. Of particular interest are non-reciprocal phononic systems, which in direct analogy to electric diodes, provide a directional flow of energy. Here, we propose an engineered nanostructured material, in which tunable non-reciprocal phonon transport is achieved through optomechanical coupling. Our scheme relies on breaking time-reversal symmetry by a spatially varying laser drive, which manipulates low-energy acoustic phonons. Furthermore, we take advantage of recent developments in the manipulation of high-energy phonons through controlled scattering mechanisms, such as using alloys and introducing disorder. These combined approaches allow us to design an acoustic isolator and a thermal diode. Our proposed device will have potential impact in phonon-based information processing, and heat management in low temperatures.\&nbsp;</p>},
	doi = {https://doi.org/10.1038/s41467-018-03624-y},
	url = {https://arxiv.org/abs/1710.08967},
	author = {Alireza Seif and Wade DeGottardi and Keivan Esfarjani and Mohammad Hafezi}
}
