1.

Record Nr.

UNINA9910254619703321

Autore

Grèzes Cécile

Titolo

Towards a Spin-Ensemble Quantum Memory for Superconducting Qubits : Design and Implementation of the Write, Read and Reset Steps / / by Cécile Grèzes

Pubbl/distr/stampa

Cham : , : Springer International Publishing : , : Imprint : Springer, , 2016

ISBN

3-319-21572-8

Edizione

[1st ed. 2016.]

Descrizione fisica

1 online resource (240 p.)

Collana

Springer Theses, Recognizing Outstanding Ph.D. Research, , 2190-5053

Disciplina

004.1

Soggetti

Quantum computers

Spintronics

Superconductivity

Superconductors

Nanotechnology

Quantum Information Technology, Spintronics

Strongly Correlated Systems, Superconductivity

Nanotechnology and Microengineering

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Description based upon print version of record.

Nota di bibliografia

Includes bibliographical references at the end of each chapters.

Nota di contenuto

Introduction -- Superconducting Circuits and Microwave Engineering -- NV Center Spins in Diamond -- Coupling Ensembles of Spins to Superconducting Circuits -- Spin-Based Quantum Memory -- Spin Ensemble Quantum Memory Protocol -- Simulations -- State of the Art & Principle of the Experiment -- Experimental Realization -- Operating the Hybrid Quantum Circuit -- Storage of Qubit States in a NV Spin Ensemble -- Conclusions on Experiment 1: The Write Step.

Sommario/riassunto

This work describes theoretical and experimental advances towards the realization of a hybrid quantum processor in which the collective degrees of freedom of an ensemble of spins in a crystal are used as a multi-qubit register for superconducting qubits. A memory protocol made of write, read and reset operations is first presented, followed by the demonstration of building blocks of its implementation with NV



center spins in diamond. Qubit states are written by resonant absorption of a microwave photon in the spin ensemble and read out of the memory on-demand by applying Hahn echo refocusing techniques to the spins. The reset step is implemented in between two successive write-read sequences using optical repumping of the spins.