Joint R&D projects with PMO on THz receivers for Radioastronomy Jian-Rong Gao (高建荣) SRON Netherlands Institute for Space Research, Utrecht, The Netherlands Delft University of Technology (TU Delft), Delft, The Netherlands -Kavli Institute of NanoScience, -TU Delft Space Institute

Kavli Institute of Nanoscience at TU Delft -Focus on the fundamental problems of nano and quantum objects -World wide leader on demonstrating quantum computer -State-of-the-art nano-fabrication facilities Nanomechanical resonators Spins in diamant Majorana qubits CAS-NWO workshop on 24-25 April, 2017, Beijing, China

chemische bewerkingen Kavli Nanolab Delft is het fabricagelaboratorium van het Kavli Institute of Nanoscience . chemische bewerkingen e-beam lithografie dunne film depositie inspectie

SRON Netherlands Institute for Space Research -Astronomic instrumentation and science ATHENA (2028) Herschel Space Telescope GUSTO 2021 SAFARI 2028 CAS-NWO workshop on 24-25 April, 2017, Beijing, China

Life Cycle of Interstellar Medium (ISM) Fine structure lines, Carbon, Oxygen, and Nitrogen, to probe all relevant phases of the interstellar medium from dense, warm, molecular interfaces to ionized gas NII: 1.4 THz CII: 1.9 THz OI: 4.7 THz 1 THz=100 µm Need one slide for transition BEFORE this slide – tell us what GUSSTO is in very general terms with a nice image. You need some excuse to say that the key to addressing those objectives is a telescope with the proper characteristics and observing profile, and we’ve learned how to do it over the past decade. Then you can jump into this more detailed discussion of exactly how we answer the questions. CAS-NWO workshop on 24-25 April, 2017, Beijing, China

Life Cycle of Interstellar Medium (ISM) Prof. Alexander Tielens, Leiden University A father for [OI] science Also Prof. Floris v.d. Tak (RuG) [ I] Need one slide for transition BEFORE this slide – tell us what GUSSTO is in very general terms with a nice image. You need some excuse to say that the key to addressing those objectives is a telescope with the proper characteristics and observing profile, and we’ve learned how to do it over the past decade. Then you can jump into this more detailed discussion of exactly how we answer the questions. CAS-NWO workshop on 24-25 April, 2017, Beijing, China

Principle of a heterodyne receiver Frequency (GHz) P o w e r 1010 Signal LO IF Spectrum 1000 4 8 Principle High spectral resolution (/ 107) Challenges for LO and mixers CAS-NWO workshop on 24-25 April, 2017, Beijing, China

Stratospheric Terahertz Observatory (STO-2): Pathfinder for GUSTO Balloon STO STO-2 in Flight Parachute STO-2 Dec. 9-30, 2016 0.8 meter telescope STO2 flown 39 km above Antarctica During 22 days 1.4 THz [NII], 1.9 THz [CII], 4.7 THz [OII] NASA, NSF mission PI : Univ of Arizona C-I: Jian-Rong Gao (SRON and TUDelft) NL: all the HEB mixers NL: 4.7 THz QCL LO CAS-NWO workshop on 24-25 April, 2017, Beijing, China

STO2 : Launch on 8th Dec CAS-NWO workshop on 24-25 April, 2017, Beijing, China

Our contributions to STO2 4.7 THz HEB mixer 4.7 THz QCL LO unit (+MIT) 2x1.4, and 2x1.9THz mixers D.G. Pavelyev & V. Vaks (Nizhny Novgorod) CAS-NWO workshop on 24-25 April, 2017, Beijing, China

Grateful for the supports of NWO CAS-NWO workshop on 24-25 April, 2017, Beijing, China

GUSTO (Selected by NASA, launch 2021) 0.8 meter telescope 39 km above Antarctica Duration: 170 days 1.4 THz [NII], 1.9 THz[CII], 4.7 THz [OI] array NASA, 1st Explorer balloon mission of opportunity PI : Univ of Arizona C-I: Jian-Rong Gao (SRON and TUDelft) NL: 3x 8 pixel HEB camera NL: 4.7 THz QCL LO NL: Phase grating CAS-NWO workshop on 24-25 April, 2017, Beijing, China

Collaboration with CAS-PMO plays a crucial for the success NWO “China beurs” to support SRON (TU Delft) (2010- 2014) : crucial ( managed by Mr. Bonenkamp) KNAW CEP project (Sep. 2006 – Sep. 2016): -22 joint journal papers, co-authored by PMO, SRON, and TU Delft. -35 exchange visits in both directions (in total)   -A delegation (one of them is Dr. R. Stark) of NWO Physical Sciences and Chemistry visited PMO -The president of TU Delft, Mr. Dirk Jan van den Berg, visited PMO CAS-KNAW Joint PhD Training project (Jan. 2009 – Jan. 2013): -Y. Ren has published 4 papers in Applied Physics Letters as the first author and co-authored four more journal papers -Finished Ph.D thesis less than 4 years Applied Physics Letters: the top journal with a citation of 3.9 CAS-NWO workshop on 24-25 April, 2017, Beijing, China

Example of a joint publication CAS-NWO workshop on 24-25 April, 2017, Beijing, China

Current NbN mixers have too small IF bandwidth Plan joint research Current NbN mixers have too small IF bandwidth New material MgB2 can increase this by a factor 3 or 4 PMO and SRON/TUD work together on design, measurement, and analysis. Fabrication at TUD Thin MgB2 comes from Dr. Yue Wang, Beijing University by HPCVD PLD deposition of MgB2 is planned also in the Delft Kavli Institute CAS-NWO workshop on 24-25 April, 2017, Beijing, China