Alicea work included in Viewpoint: A Roadmap for a Scalable Topological Quantum Computer

Recent work by Jason Alicea, IQIM Postdoctoral Scholar alum Torsten Karzig and collaborators is featured as a Physics Viewpoint: A Roadmap for a Scalable Topological Quantum Computer. “ … the race to build a quantum computer has many competitors pursuing a variety of approaches, some of which appear to be on the verge of creating [...]

2017-06-26T11:10:37+00:00 June 26th, 2017|News, Publications|0 Comments

IQIM-members’ papers stand the test of time

Google Scholar released a new collection of Classic Papers “a collection of highly-cited papers in their area of research that have stood the test of time.” They include the ten most-cited articles published ten years earlier over a broad range of research topics, such as Life Sciences & Earth Sciences, Business, Economics & Management, Physics [...]

2017-06-15T14:10:32+00:00 June 15th, 2017|News, Publications|0 Comments

Quantum voting and violation of Arrow’s impossibility theorem

A new paper by Ning Bao, DuBridge Postdoctoral Scholar in Theoretical Physics, and Graduate Student, Nicole Yunger Halpern has been selected as a Physical Review A Editor's selection. In Quantum voting and violation of Arrow's impossibility theorem [a] quantum voting system is proposed in the tradition of quantum game theory. It is shown that this [...]

2017-06-07T17:21:53+00:00 June 7th, 2017|News, Publications|0 Comments

Code Properties from Holographic Geometries

John Preskill and former IQIM Postdoctoral Scholar, Fernando Pastawski present new work in Code Properties from Holographic Geometries Phys. Rev. X 7, 021022 (2017). An overview is presented in the paper's Popular Summary: This figure illustrates uberholography for the case of a two-dimensional hyperbolic bulk geometry. The inner logical boundary is contained inside the [...]

2017-06-07T17:18:57+00:00 May 23rd, 2017|News, Publications|0 Comments

Hsieh group discovers first 3D quantum liquid crystal

These images show light patterns generated by a rhenium-based crystal using a laser method called optical second-harmonic rotational anisotropy. At left, the pattern comes from the atomic lattice of the crystal. At right, the crystal has become a 3-D quantum liquid crystal, showing a drastic departure from the pattern due to the atomic lattice [...]

2017-05-11T12:57:44+00:00 May 1st, 2017|News, Publications, Uncategorized|0 Comments

Paper by Xie Chen “Symmetry Fractionalization in Two Dimensional Topological Phases” featured

A recent paper by Xie Chen Symmetry Fractionalization in Two Dimensional Topological Phases is available in Review in Physics. Symmetry fractionalization describes the fascinating phenomena that excitations in a 2D topological system can transform under symmetry in a fractional way. For example in fractional quantum Hall systems, excitations can carry fractional charges while the electrons [...]

2017-03-16T12:23:21+00:00 March 15th, 2017|News, Publications|0 Comments

Union of two physics tools sheds light on quantum chaos

IQIM graduate student Nicole Yunger Halpern explores quantum chaos in her new publication Jarzynski-like equality for the out-of-time-ordered correlator What do black holes have in common with DNA? Black holes are chaotic quantum systems, which scramble information rapidly. DNA obeys fluctuation relations, equations that govern the energy needed to perform tasks like the uncoiling a [...]

2017-02-20T11:46:33+00:00 January 26th, 2017|Publications|0 Comments

Atom–atom interactions around the band edge of a photonic crystal waveguide

A new paper by the Kimble group reports initial observation of cooperative atom–atom interactions around the band edge of a photonic crystal waveguide. "In recent years, there has been considerable effort to bring ultracold atoms into the realm of nanophotonics. Nanoscopic dielectric devices offer unprecedented opportunities to engineer novel capabilities for the control of atom–photon [...]

2017-01-13T10:05:27+00:00 September 28th, 2016|News, Publications|0 Comments

Derivations of the thermal state of a quantum system that has noncommuting charges

Recently reignited interest in quantum thermodynamics has prompted information-theoretic approaches to fundamental questions, including the roles of entanglement, measurement, and noncommutation. A central concept in statistical mechanics is the thermal state. The thermal state of a system that exchanges heat with a bath, or heat and particles, or other commuting observables, is well-known. But quantum [...]

2017-01-13T10:05:27+00:00 July 12th, 2016|News, Publications|0 Comments

Duality between Free Dirac Cone and QED derived

  Credit: APS/Alan StonebrakerFigure 1: The action of discrete symmetries on the fermionic particle (top) and its dual fermionic vortex (bottom). In a new paper by IQIM Postdoctoral Scholar David Mross together with Jason Alicea and Lesik Motrunich they explicitly derive the duality between a free electronic Dirac cone and quantum electrodynamics in [...]

2017-01-13T10:05:27+00:00 June 28th, 2016|News, Publications|0 Comments