Network architecture of energy landscapes in mesoscopic quantum systems

  title={Network architecture of energy landscapes in mesoscopic quantum systems},
  author={Abigail N. Poteshman and Evelyn Tang and Lia Papadopoulos and Danielle S. Bassett and Lee C. Bassett},
  journal={New Journal of Physics},
Mesoscopic quantum systems exhibit complex many-body quantum phenomena, where interactions between spins and charges give rise to collective modes and topological states. Even simple, non-interacting theories display a rich landscape of energy states—distinct many-particle configurations connected by spin- and energy-dependent transition rates. The ways in which these energy states interact is difficult to characterize or predict, especially in regimes of frustration where many-body effects… 

Network structure and dynamics of effective models of non-equilibrium quantum transport

Across all scales of the physical world, dynamical systems can often be usefully represented as abstract networks that encode the system’s units and interunit interactions. Understanding how physical

Response of quantum spin networks to attacks

The ground states of spin models defined on networks that are imprinted and their response to decohering processes which the authors model with network attacks are investigated, and it is indicated that complex spin networks are not more robust to projective measurement attacks than non-complex spin networks, in contrast to the classical case.



Direct entropy measurement in a mesoscopic quantum system

The entropy of an electronic system offers important insights into the nature of its quantum mechanical ground state. This is particularly valuable in cases where the state is difficult to identify

Electron interactions in an antidot in the integer quantum Hall regime

Electronic structure of quantum dots

The properties of quasi-two-dimensional semiconductor quantum dots are reviewed. Experimental techniques for measuring the electronic shell structure and the effect of magnetic fields are briefly

Probing Electron-Electron Interactions with a Quantum Antidot

In the integer quantum Hall (IQH) regime, an antidot provides a finite, controllable `edge' of quantum Hall fluid that is an ideal laboratory for investigating the collective dynamics of large

Spin blockades in linear and nonlinear transport through quantum dots.

It is shown that in addition to the Coulomb blockade, spin selection rules strongly influence the low temperature transport, and lead to experimentally observable effects.

Energy Cost of Controlling Mesoscopic Quantum Systems.

This result provides the mesoscopic equivalent of the fundamental cost of refrigeration, sets the minimum power consumption of mesoscopic devices that operate out of equilibrium, and allows one to calculate the efficiency of any control protocol, whether it be open-loop or feedback control.

Topological Quantum Computation—From Basic Concepts to First Experiments

This work reviews the basic concepts of non-Abelian phases and their topologically protected use in quantum information processing tasks and discusses different possible realizations of these concepts in experimentally available solid-state systems, including systems hosting Majorana fermions, their recently proposed fractional counterparts, and non- Abelian quantum Hall states.

Introduction to Mesoscopic Electron Transport

In this introductory chapter several basic concepts, relevant for mesoscopic electron transport, will be described. The aim is to provide a basis for several of the following Chapters of this volume.

Probing Spin-Charge Separation in a Tomonaga-Luttinger Liquid

An electrostatically gated 1D system is fabricated in which the spin-charge separation persists even beyond the low-energy regime where the TLL approximation should hold and also the predicted power-law suppression of tunneling into the1D system.

Scaling the Ion Trap Quantum Processor

The latest progress and prospects in the scaling of trapped ions to hundreds or thousands of qubits and beyond are reviewed, with the promise of advanced architectures and new technologies, such as microfabricated ion traps and integrated photonics.