Design automation and design space exploration for quantum computers
A major hurdle for quantum algorithms for linear systems of equations, and for quantum simulation algorithms, is the difficulty to find simple circuits for arithmetic.
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Common framework for scientific experiments: QCoDeS
QCoDeS is an open source data acquisition framework that was created by distilling the homegrown solutions used in Station Q’s experimental labs, and infused with all the best practices from the open source software world. -
Transport signatures of quasiparticle poisoning in a Majorana island
As its name implies, the poisoning of Majorana devices by normal electrons is fatal to topological computation, so much effort is now focused on characterizing the degree of poisoning either by the creation of quasiparticle pairs within the device, or by electrons entering the device through the leads. -
A clear view of emerging and hybridizing Majorana zero modes using epitaxial InAs-Al nanowires
The first signature of Majorana physics, identified experimentally at TU Delft in 2012, focused on a characteristic conductance peak at zero voltage. -
Normal, superconducting and topological regimes of hybrid double quantum dots
Majorana devices will generally be much more complicated than the single-junction or single quantum dot Majorana devices that have been realized in the literature so far. -
Anomalous Fraunhofer Interference in Epitaxial Superconductor-Semiconductor Josephson Junctions
Last year saw a materials breakthrough, with the realization of a two-dimensional heterostructure combining superconductor and semiconductor layers. -
Verified compilation of space-efficient reversible circuits
Generation of reversible circuits from high-level code is an important problem in the compilation flow of quantum algorithms to lower-level hardware. -
Double semions in arbitrary dimension
In the paper, “Double semions in arbitrary dimension,” published in Communications in Mathematical Physics, Michael Freedman and Matthew Hastings present a new construction of topological phases of matter in higher dimensions, generalizing the double semion theory in two dimensions. -
Topological Phases in InAs1−x Sbx : From Novel Topological Semimetal to Majorana Wire
In this paper, we show by computer simulations that a new material, which is a specific combination of the two semiconductors InAs and InSb (both are currently used in experimental setups on Majorana zero modes), has vastly improved properties compared to InAs or InSb alone, making it ideally suited for future devices. -
Training a quantum optimizer
In this paper, published in Physical Review A, we show how to greatly improve success at solving Constraint Satisfaction Problems on a quantum computer by using a learned schedule, instead of the standard linear ramps. -
Triple point topological metals
Topological materials can yield quasiparticles that behave in a manner similar to elementary particles that are part of the standard model of particle physics. -
Conductance of a proximitized nanowire in the Coulomb blockade regime
In this paper, which was just published in Physical Review B, a quantitative theory for the two-terminal conductance of a proximitized nanowire in the Coulomb blockade regime is developed.