Tera-Days: Attività INFN e prospettive per la radiazione THz e le sue applicazioni

Session

Detectors THz and sub-THz

6 Apr 2017, 08:00

Sala Lauree (Sapienza Università di Roma e Sezione INFN di Roma)

Conveners

Detectors THz and sub-THz

• Paolo Valente (ROMA1)

Detectors THz and sub-THz

• Augusto Marcelli (LNF)

3. Detection of microwave photons with superconducting qubits for axion searches

Claudio Gatti (LNF)

06/04/2017, 09:15

An elegant solution to the strong CP problem, proposed in 1977 by Peccei and Quinn, implies the existence of a new neutral boson called the Axion. Axions could explain the presence of cold dark matter in our Universe. Microwave cavity experiments looking for galactic axions (ADMX, QUAX) need to push their sensitivity beyond the quantum limit of amplifiers by means of single-photon counters in...

17. Sensors and Readout Electronics for High Brilliance Terahertz Radiation

Dr Michele Caselle (Karlsruhe Institute of Technology)

06/04/2017, 09:40

The ANKA storage ring can generate brilliant coherent synchrotron radiation (CSR) in the THz range due to a dedicated low-αc -optics with reduced bunch lengths. At higher electron currents the emission of CSR is not stable, but occurs in powerful bursts caused by micro-bunching instabilities. This intense THz radiation is very attractive for users. However, the reproducibility of the...

11. SIMAP: A project on Thz kinetic inductance detectors (KID) based on high-Tc superconductors.

Jose' Guillermo Garcia Lorenzana (ROMA1)

06/04/2017, 10:05

I will present the SIMAP project proposal conceived within a collaboration among researchers from the INFN-cryogenic detectors laboratory, the ISC-CNR, IFN-CNR, and the Sapienza physics department. The aim of the project is to realize a prototype KID based on a high-Tc superconductor with the aim of lowering the operational costs for commercial applications in fields as medicine, astronomy,...

6. A possible novel Terahertz Detection based on Tunable nanometric Nb islands Flux Array Device

Daniele Di Gioacchino (LNF)

06/04/2017, 14:00

D. Di Gioacchino, C. Gatti, A. Marcelli, S. Lupi, M. Lankhorst and N. Poccia We recently assembled a nanometric pattern of niobium islands as a controllable regular fluxon-array used to investigate the phase transitions of stable and metastable states (vortex insulator-vortex metal state) in competing regular vortex configurations [1]. This system shows the evidence of Shapiro steps at...

9. Studio dell’accoppiamento ottico di rivelatori veloci con risonatori a metamateriali selettivi alle frequenze THz

Dr Roberto Leoni (Istituto di fotonica e nanotecnologie, CNR)

06/04/2017, 14:25

Si mostreranno i risultati ottenuti nello sviluppo di rivelatori superconduttori selettivi in frequenza che operano a frequenze THz. Il nostro approccio prevede l’integrazione di un hot electron bolometer (HEB), realizzato con un layer ultra sottile di nitruro di niobio (NbN) (3-5 nm), con un risonatore LC . Come è noto, il nitruro di niobio è il materiale di riferimento per la fabbricazione...

16. Design and Electrical Performance of the Kinetic Inductance Detectors of the OLIMPO experiment

Alessandro Paiella (Sapienza and ROMA1)

06/04/2017, 14:50

In this contribution, we are going to show the design and the electrical performance of the horn-coupled lumped element kinetic inductance detectors (LEKIDs) for the OLIMPO experiment. OLIMPO is a balloon borne mission, devoted to the study of the largest structures in the Universe, by detecting the Sunyaev-Zel’Dovich effect of the Comsic Microwave Background (CMB) photons crossing clusters of...

2. Imaging with a Talbot interferometer using THz radiation

Augusto Marcelli (LNF)

06/04/2017, 15:15

THz radiation is already used for spectroscopy and imaging applications. In particular, several imaging techniques have been already considered at these wavelengths for industrial and security applications, each one with specific advantages and drawbacks. Indeed, thanks to the high penetration of the THz radiation, a condition similar to X-ray radiation, it is possible to consider different...