CV-QDAPT

Continuous-Variable Quantum Detector And Process Tomography

 Coordinatore THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD 

 Organization address address: University Offices, Wellington Square
city: OXFORD
postcode: OX1 2JD

contact info
Titolo: Ms.
Nome: Gill
Cognome: Wells
Email: send email
Telefono: +44 1865 289800
Fax: +44 1865 289801

 Nazionalità Coordinatore United Kingdom [UK]
 Totale costo 209˙033 €
 EC contributo 209˙033 €
 Programma FP7-PEOPLE
Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
 Code Call FP7-PEOPLE-2011-IEF
 Funding Scheme MC-IEF
 Anno di inizio 2013
 Periodo (anno-mese-giorno) 2013-01-14   -   2015-01-13

 Partecipanti

# participant  country  role  EC contrib. [€] 
1    THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD

 Organization address address: University Offices, Wellington Square
city: OXFORD
postcode: OX1 2JD

contact info
Titolo: Ms.
Nome: Gill
Cognome: Wells
Email: send email
Telefono: +44 1865 289800
Fax: +44 1865 289801

UK (OXFORD) coordinator 209˙033.40

Mappa


 Word cloud

Esplora la "nuvola delle parole (Word Cloud) per avere un'idea di massima del progetto.

detector    bhd    photon    stages    coherent    filtration    fock    cv    detection    preparation    tomography    single    detectors    quantum   

 Obiettivo del progetto (Objective)

'At the heart of all quantum technologies and fundamental tests of quantum theory lies the concept of a quantum experiment, which consists of three stages: state preparation, state evolution, and measurement. To ensure that a quantum application, such as quantum computer, is actually performing the desired task with satisfactory fidelity requires the capability to monitor each step. Quantum state and process tomography respectively prescribe procedures to completely characterize the first two stages. Tomography of quantum detectors was proposed just three years ago for discrete-variable photon-counting detection, and has yet to be developed for continuous-variable (CV) detectors such as a balanced homodyne detector (BHD). The study of CV quadrature states, processes and detection is motivated by the significantly increased complexity of such systems and the expanded capabilities that accompany this intricacy. A key advance that we propose is the complete characterization of a CV-BHD. This will be accomplished by probing the detector with known coherent states. The measurement outcomes will be analyzed using the newly developed methods of compressive sensing and operational tomography. Careful determination of BHD operation will subsequently enable us to achieve a greatly improved rendering of more involved CV quantum processes such as Fock-state filtration. By measuring the action of a process on a set of calibrated coherent states we will perform CV-quantum process tomography (QPT) of single mode processes, which are of major relevance to non-classical quantum state preparation: single photon substraction and Fock-state filtration.'

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