Decoupling bent quantum networks.

Holger Frydrych, Antonín Hoskovec, Igor Jex +1 more

State transfer across discrete quantum networks is one of the elementary tasks of quantum information processing. Its aim is the faithful placement of information into a specific position in the network. However, all physical systems suffer from imperfections, which can severely limit the transfer fidelity. We present selective dynamical decoupling schemes which are capable of stabilizing imperfect quantum state transfer protocols on the model of a bent linear qubit chain. The efficiency of the schemes is tested and verified in numerical simulations on a number of realistic cases. The simulations demonstrate that these selective dynamical decoupling schemes are capable of suppressing unwanted errors in quantum state transfer protocols efficiently.

Ivan B. Djordjević

Igal Bayn, Sara Mouradian, Luozhou Li +5 more

A triangular nanobeam architecture for a bulk-diamond quantum photonic networks based on silicon masking and angular etching is proposed and implemented. Cavities with Q>3×103 are demonstrated. S-bent interconnects for realizing a mm-scale network are introduced.

Peter P. Rohde

Rossen Dandoloff, Victor Atanasov

Abstract We show the existence of an anticentrifugal force for a quantum particle in a bent waveguide. This effect may be observed in interference experiments which are sensitive to the additional phase of the wavefunction gained in the bent regions and can find application in distinguishing between straight and bent geometries.

Ming‐Xing Luo