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Anomalous edge states and the bulk-edge correspondence for periodically-driven two dimensional systems
Recently, several authors have investigated topological phenomena in periodically-driven systems of non-interacting particles. These phenomena are identified through analogies between the FloquetExpand
Floquet topological insulator in semiconductor quantum wells
Topological phases of matter have captured our imagination over the past few years, with tantalizing properties such as robust edge modes and exotic non-Abelian excitations, and potentialExpand
Entangled photon pairs from semiconductor quantum dots.
Tomographic analysis demonstrates that the polarization state of pairs of photons emitted from a biexciton decay cascade becomes entangled when spectral filtering is applied and that the remanent information in the quantum dot degrees of freedom is negligible. Expand
Fractionalizing Majorana fermions: non-abelian statistics on the edges of abelian quantum Hall states
We study the non-abelian statistics characterizing systems where counter-propagating gapless modes on the edges of fractional quantum Hall states are gapped by proximity-coupling to superconductorsExpand
Universal transport signatures of Majorana fermions in superconductor-Luttinger liquid junctions
One of the most promising proposals for engineering topological superconductivity and Majorana fermions employs a spin-orbit coupled nanowire subjected to a magnetic field and proximate to an s-waveExpand
Anomalous Floquet-Anderson Insulator as a Nonadiabatic Quantized Charge Pump
We show that two-dimensional periodically driven quantum systems with spatial disorder admit a unique topological phase, which we call the anomalous Floquet-Anderson insulator (AFAI). The AFAI isExpand
Deterministic generation of a cluster state of entangled photons
This work uses semiconductor quantum dots to deterministically generate long strings of polarization-entangled photons in a cluster state by periodic timed excitation of a precessing matter qubit, and produces strings of hundreds of photons in which the entanglement persists over five sequential photons. Expand
Proposal for pulsed on-demand sources of photonic cluster state strings.
Using realistic parameters for current quantum dot sources, it is concluded high entangled-photon emission rates are achievable, with Pauli-error rates per photon of less than 0.2%. Expand
Accessing the dark exciton with light
The fundamental optical excitation in semiconductors is an electron–hole pair with antiparallel spins: the ‘bright’ exciton. Bright excitons in optically active, direct-bandgap semiconductors andExpand
Universal topological quantum computation from a superconductor/Abelian quantum Hall heterostructure
Non-Abelian anyons promise to reveal spectacular features of quantum mechanics that could ultimately provide the foundation for a decoherence-free quantum computer. A key breakthrough in the pursuitExpand