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Quantum Emitters for Telecommunication in the O-Band

Deliverables

Project website

A webpage for the project with a project description, H2020 ackowledgement and links to all partners will be hosted and maintained by UNIVIE.

Social media accounts, student blog and introductory outreach video online

A student blog section will be added and an introductory video describing the project will be posted on the project website. Social media (e.g Twitter) will be linked to the website and used to divulge project news.

High-purity SiC sample for ensemble and single-centre experiments, including isotopical engineering

LIU will create high-purity SiC layers grown on commercial substrates. These samples will have different characteristics (dopant density and layer thickness) for ensemble and single-centre experiments. Isotopic engineering will be used to determine the effect of 29Si, 30Si and 13C on the properties of the emitters, such as inhomogeneous broadening of the optical transition and the on the ESR linewidth. The deliverable will contain a description of the growth procedure and first characterization results.

Theoretical optimization of protocols for electrically-driven ensemble quantum memory

In this report, we will describe the results of spectroscopy and theoretical results on Mo and V spin ensembles. These results will enable us to define the optimal spin-photon interfacing parameters. We will include an outline of the resulting protocols in the deliverable.

SiC membrane: <5 μm thickness, < 1nm RMS roughness

Thin membranes with low roughness are required for integration with Fabry-Pérot and photonic crystal cavities. We will describe the creation of such membranes, including the intended path towards thinner and smoother layers for improved performance.

Data management plan

The DMP will be submitted, and will include provisions for storage, internal sharing and external access to project data and publications.

Publications

Vibronic States and Their Effect on the Temperature and Strain Dependence of Silicon-Vacancy Qubits in 4 H - Si C

Author(s): Péter Udvarhelyi, Gergő Thiering, Naoya Morioka, Charles Babin, Florian Kaiser, Daniil Lukin, Takeshi Ohshima, Jawad Ul-Hassan, Nguyen Tien Son, Jelena Vučković, Jörg Wrachtrup, Adam Gali
Published in: Physical Review Applied, Issue 13/5, 2020, ISSN 2331-7019
DOI: 10.1103/physrevapplied.13.054017

Developing silicon carbide for quantum spintronics

Author(s): Nguyen T. Son, Christopher P. Anderson, Alexandre Bourassa, Kevin C. Miao, Charles Babin, Matthias Widmann, Matthias Niethammer, Jawad Ul Hassan, Naoya Morioka, Ivan G. Ivanov, Florian Kaiser, Joerg Wrachtrup, David D. Awschalom
Published in: Applied Physics Letters, Issue 116/19, 2020, Page(s) 190501, ISSN 0003-6951
DOI: 10.1063/5.0004454

Room-temperature coherent control of implanted defect spins in silicon carbide

Author(s): Fei-Fei Yan, Ai-Lun Yi, Jun-Feng Wang, Qiang Li, Pei Yu, Jia-Xiang Zhang, Adam Gali, Ya Wang, Jin-Shi Xu, Xin Ou, Chuan-Feng Li, Guang-Can Guo
Published in: npj Quantum Information, Issue 6/1, 2020, ISSN 2056-6387
DOI: 10.1038/s41534-020-0270-8

Extending qubit coherence by adaptive quantum environment learning

Author(s): Eleanor Scerri, Erik M Gauger, Cristian Bonato
Published in: New Journal of Physics, Issue 22/3, 2020, Page(s) 035002, ISSN 1367-2630
DOI: 10.1088/1367-2630/ab7bf3

Spin-controlled generation of indistinguishable and distinguishable photons from silicon vacancy centres in silicon carbide

Author(s): Naoya Morioka, Charles Babin, Roland Nagy, Izel Gediz, Erik Hesselmeier, Di Liu, Matthew Joliffe, Matthias Niethammer, Durga Dasari, Vadim Vorobyov, Roman Kolesov, Rainer Stöhr, Jawad Ul-Hassan, Nguyen Tien Son, Takeshi Ohshima, Péter Udvarhelyi, Gergő Thiering, Adam Gali, Jörg Wrachtrup, Florian Kaiser
Published in: Nature Communications, Issue 11/1, 2020, ISSN 2041-1723
DOI: 10.1038/s41467-020-16330-5

Entanglement and control of single nuclear spins in isotopically engineered silicon carbide

Author(s): Alexandre Bourassa, Christopher P. Anderson, Kevin C. Miao, Mykyta Onizhuk, He Ma, Alexander L. Crook, Hiroshi Abe, Jawad Ul-Hassan, Takeshi Ohshima, Nguyen T. Son, Giulia Galli, David D. Awschalom
Published in: Nature Materials, 2020, ISSN 1476-1122
DOI: 10.1038/s41563-020-00802-6

Spectrally reconfigurable quantum emitters enabled by optimized fast modulation

Author(s): Daniil M. Lukin, Alexander D. White, Rahul Trivedi, Melissa A. Guidry, Naoya Morioka, Charles Babin, Öney O. Soykal, Jawad Ul-Hassan, Nguyen Tien Son, Takeshi Ohshima, Praful K. Vasireddy, Mamdouh H. Nasr, Shuo Sun, Jean-Philippe W. MacLean, Constantin Dory, Emilio A. Nanni, Jörg Wrachtrup, Florian Kaiser, Jelena Vučković
Published in: npj Quantum Information, Issue 6/1, 2020, ISSN 2056-6387
DOI: 10.1038/s41534-020-00310-0

Spin-relaxation times exceeding seconds for color centers with strong spin–orbit coupling in SiC

Author(s): Carmem M Gilardoni, Tom Bosma, Danny van Hien, Freddie Hendriks, Björn Magnusson, Alexandre Ellison, Ivan G Ivanov, N T Son, Caspar H van der Wal
Published in: New Journal of Physics, Issue 22/10, 2020, Page(s) 103051, ISSN 1367-2630
DOI: 10.1088/1367-2630/abbf23