Humboldt-Universität zu Berlin - Faculty of Mathematics and Natural Sciences - Integrated Quantum Photonics

08-12/12/2025 Globecom, Taipeh, Taiwan

Talk:  Scalable integration of long-lived quantummemories into photonic circuits andSecure Quantum Token Processing (Gregor) 

01-03/12/2025 QR.N Quantum Business Bootcamp, Bad Honnef 

with Pascal, Jonas, Charlotta and Julian 

 

10-12/11/2025 BOS.QT Retreat, Wernigerode,Germany

Posters: Towards efficient spin control of tin-vacancy color centers in diamond 
for quantum networks (Jonas)

Implementing the SUPER scheme for tin-vacancy spin qubit inversion and frequency encoding-based entanglement protocols (Cem)

Talk: Quantum Microscopy for Automated Probing and Pinpointing of Solid-State Emitters (Maarten)

 

10-12/11/2025 European Quantum Technologies Conference (EQTC) 2025, Copenhagen, Denmark 

Poster: Nanofabrication methods for quantum photonic devices based on color
centers in diamond (Tommaso)

20-22/10/2025 QR.N Diamond platform meeting 2025, Ulm, Germany

Malo participated at this workshop 

 

15-17/10/2025 QuNEW Quantum Networks Workshop, The Hague, Netherlands

Poster: Implementing the SUPER scheme for tin-vacancy spin qubit inversion and frequency encoding-based entanglement protocols (Cem)

 

13-17/10/2025 Q-Next Workshop, Paris, France

Conference on Spin Defects in Solids for Quantum Information Science with Kilian, Cem and Tim 

Posters: Spectral control of a noisy quantum emitter with optical pulses (Kilian)

Implementing the SUPER scheme for tin-vacancy spin qubit inversion and frequency encoding-based entanglement protocols (Cem)

 

08-09/10/2025 Photonics Days, Berlin 

Talk: Quantum Microscopy for Automated Probing and Pinpointing of Solid-State Emitters (Maarten)

Exploring Time-Resolved Materials Science at the Atomic Lattice Level with an SnV Electrometer in Diamond (Cem)

 

27/09- 02/10/ 2025 Erice summer school, Erice, Sicily, Italy

A summer school for Quantum technology from fundamental science to real world applications with posters from Kilian (Spectral control of a noisy quantum emitter with optical pulses), Alok (Optically stable NV centers integrated into highly tunable diamond photonic crystal cavities)  and Jonas (Towards efficient spin control of tin-vacancy color centers in diamond 
 for photonic quantum memories)

Talk: Integrated quantum photonic devices in diamond: nanostructures in the hardest of the materials (Tommaso)

 

08-12/09/2025 DPG Göttingen 

Talks: Probing MHz Charge Dynamics in Diamond Using a Tin-Vacancy Color Center (Charlotta)

The Sawfish spin-photon interface: fabrication and characterization (Marco)

Hetero-integration of diamond nanostructures into AlGaN/AlN photonic platform (Domenica)

Retrieving lost atomic information of an optical quantum system (Laura)

Exploring non-Markovian dynamics in microwave spin control of group-IV color centers coupled to a phononic bath (Mohamed)

Color centers for the secure processing of quantum tokens (Gregor)

Large-Scale Localization of Individual Diamond Color Centers (Maarten)

Automated Large-Scale Characterization of Solid-State Color Centers for Quantum Communication (Julian)

Spectral Control of a Noisy Quantum Emitter with Optical Pulses (Kilian)

Near Lifetime-limited NV Centers Integrated into Diamond Photonic Crystal Cavities (Alok)

Posters:  Towards Efficient Spin Control of Tin-Vacancy Color Centers in Diamond for Quantum Networks (Jonas)

Coherent interactions of quantum emitters in a dielectric waveguide (Grigory)

Deep Learning Strategies for Stabilizing NV Center Emission Spectra (Clara Baenz)

Development of spin-impurity controlled nanodiamonds for quantum sensing (Keisuke)

Fabrication of shape optimized, adiabtic fiber tapers for highly efficient cavity to fiber coupling (Pascal) 

Addressing Fabrication Challenges in Photonic Crystal Cavities for Diamond Color centers (Lucca)

 

01-02/09/2025 QR.N Workshop 1, Bad Honnef, Germany

Talk: Workshop on the experimental implementation of Superdense coding  (Gregor)

 

25-27/08/2025 Group Trip, Warnemünde, Germany

Many fun and entertaining activities and lectures awaited us on the Baltic Sea.

 

28/06/2025 Long Night of Science, Berlin

This year, during the Long Night of Science, we demonstrated the principle of the total reflection of light on a jet of water. We also gave an interactive demonstration of the colour spectrum and a spectrosmeter. We were able to introduce our research to many children and interested visitors. See you next year!

 

Maarten is at the Long Night of Science event of the Berlin University Alliance: "KUNST TRIFFT WISSENSCHAFT: Exhibition and Talk with Artists and Researchers". He presents our winning project in the Artist Talk and explains the magic between art and science.

 

 

23-27/06/2025 CLEO Europe, Munich/Germany

Talks: Hetero-integration of diamond nanostructures on AlGaN-based photonic circuits (Domenica)

Restoring Information from Sparse Single Photon Detection Events for Experiments in Quantum Optics (Laura)

Optically stable NV centers integrated into highly tunable diamond photonic crystal cavities (Alok)

 

22-27/06/2025 ISIT, Ann Arbor, USA 

Talk: Secure quantum token processing (Gregor)

 

04-09/05/2025 CLEO at the Long Beach Convention Center, in Long Beach, CA

Talks: Implementing the SUPER scheme for tin-vacancy spin qubit manipulation and entanglement (Cem) Exploring Time-Resolved Materials Science at the Atomic Lattice Level (Gregor)

 

 

23-29/03/2025 Quantum Nanophotonics, Benasque, Spain 

Posters: Large-scale Localization and Characterization of Individual Diamond Color Centers of Deterministic Fabrication of Nanophotonic Spin-Photon Interfaces (Maarten)

Corrugated Rectangular and Triangular Photonic Crystal Nanobeams for Highly Efficient Spin-Photon Interfaces (Julian)

The Sawfish Spin-Photon Interface: Fabrication and Characterization (Marco)

Talks: Diamond nanophotonic spin-photon interfaces (Tim Schröder)

 

19-21/03/2025 Hasselt Diamond Workshop 2025, Hasselt, Belgium

Presentation: Large-scale Localization and Characterization of Diamond Color Centers for Deterministic Fabrication of Nanophotonic Spin-Photon Interfaces (Maarten)

Posters: Efficient spin control of tin-vacancy color centers in diamond for photonic quantum memories (Jonas)

Nanofabrication methods for quantum photonic devices based on color centers in diamond (Tommaso)

 

09-14/03/2025 DPG SAMoP, Bonn

Implementing the SUPER Scheme for Tin-Vacancy Spin Qubit Manipulation and Entanglement (Cem)
Measuring MHz charge dynamics in diamond with a tin-vacancy color center (Charlotta)
Nonlinear SnV-Based Electrometry for Material Science at the Atomic Lattice Scale (Gregor)
A Color Center based Scheme for the Storage and Retrieval of a Quantum Token (Yannick)

 

13/12/2024 Christmas Party: Bowling 

 

18-20/11/2024 EQTC 2024, Lisbon, Portugal: Tommaso Pregnolato

Poster: Nanofabrication of suspended Sawfish photonic crystal cavities in diamond

 

11/11/2024 Japanese‐German Symposium on Applications of Quantum Computers

at the Berlin Brandenburgische Akademie der Wissenschaften (BBAW), Berlin 

Presentation: Diamond spin defects as resource for photonic quantum computation (Tim Schröder)

Posters: Investigation of microwave spin control of unstrained negatively charged group-IV color centers in diamond (Mohamed Belhassen)

Generation of cluster states with group-IV color centers in diamond (Gregor Pieplow)

The Sawfish cavity: an efficient spin-photon interface for photonic quantum computing (Marco Stucki)

Large-Scale Localization and Characterization of Diamond Color Centers for Deterministic Fabrication of Nanophotonic Spin-Photon Interfaces (Maarten van der Hoeven)

 

24-27/09/2024 Swabian Summer School, Stuttgart: Jonas Wollenberg 

intensive program on advanced photonic and quantum measurements

 

 

18-20/09/2024 EACN, TU Braunschweig: Gregor Pieplow

Presentation: Creating spin-photon entanglement with group four color centers in diamond

 

16-27/09/2024 Quantum 2024, Bari, Italy: Domenica Bermeo

Summer School on Quantum Optical Technologies

Poster: Hetero-integration of diamond nanostructures on AlGaN-based photonic circuits

 

11-13/09/2024 Workshop on Quantum Repeaters and Networks, Montreux, Switzerland

Poster: The Sawfish cavity: an efficient spin-photon interface for quantum repeater applications (Marco Stucki)

 

02-04/09/2024 Arc­ti­que Pho­QS, Paderborn

Summer School on Cryogenic Temperatures Integrated Quantum Electronics (Arctique) with Gregor, Tom and Yannick 

Presentation: Creating and Applying Photonic Cluster States: Advances and Techniques (Gregor Pieplow)

Poster: Optimal Control Aspects for Cluster State Generation with Group-IV Color Centers in Diamond (Tom Ben Dor and Yannick Strocka)

 

07-09/08/2024 Group Trip to Lake Blossin 

Volleyball, Kayak and a lot of FUN! 

 

15-18/07/2024 BOS.QT Retreat, TU Berlin

with Cem, Kilian, Julian, Maarten

Maartens poster: "Large-Scale Localization and Characterization of Diamond Color Centers for Deterministic Fabrication of Nanophotonic Spin-Photon Interfaces"

 

12/07/2024 Friday Light Talks, Berlin: Charlotta Gurr

Monitoring charge dynamics in diamond with MHz acquisition rates (oral presentation)

 

22/06/2024 Long Night of the Sciences, Berlin

we were delighted to present our research to the general public with exciting experiments

 

18-24/06/2024 Siegman International School, Stanford University, USA: Cem Güney Torun

Summer school on Lasers 

 

03-07/06/2024 Summer School at Zuse Institute Berlin: Tom Ben For

Workshop on Tensor Methods for Quantum Simulation 2024

 

20-31/05/2024 Quantum Information Spring School, Les Houches, France

Mohamed and Kilian have participated

 

05-10/05/2024 CLEO, Charlotte, North Caroline, USA

with Tim, Gregor, Sinan, Mohamed, Marco and Julian 

Julian: Integrated Magnetic Field Camera Based on Infrared Absorption ODMR Mediated by Diamond NV Centers

Marco: The Sawfish cavity: an efficient spin-photon interface for quantum repeater applications (oral presentation)

 

26/04/2024 - Seminar: Sophia Economou

Spin-photon interfaces: control and distribution of entanglement

 

17-19/04/2024 AMPD 2024, Zuse Institute Berlin

inivited talk: 'Sawfish' Photonic Crystal Nanostructures for Near-Unity Emitter-to-Waveguide Coupling (Julian Bopp)

poster: hetero-integration of diamond nanostructures on AlGaN-based photonic circuits (Domenica Bermeo Alvaro)

 

18-22/03/2024 QD2024, Munich

Tommaso, Mustafa, Gregor participated on the 12th International Conference on Quantum Dots 

Poster: Nanofabrication of suspended Sawfish photonic crystal cavities in diamond (Tommaso)

17-22/03/2024 DPG SKM 2024, TU Berlin: Cem, Maarten 

Maartens Poster: "Photonic Integration of Diamond Qubits into Hybrid Quantum Circuits"

 

10-15/03/2024 DPG SAMOP, Freiburg

with Mohamed, Gregor and Julian 

Julian: Integrated Magnetic Field Camera Based on Diamond NV Center Infrared Absorption ODMR

 

28/02/2024 - Hasselt Diamond Workshop - SBDD XXVIII

• Marco Stucki: Sawfish photonic crystal cavities with Q-factors of several thousand (talk)
• Tommaso Pregnolato: Nanofabrication methods for suspended “Sawfish” cavities in diamond (poster)
• Kilian Unterguggenberger: Diamond surface preparation for optically coherent NV centers in nanostructures (poster)

 

 

12/2023 Christmas Party 

 

7-8/12/2023 EQEP 2023, Paderborn: Tim, Kilian, Maarten 

international workshop on “Engineering of Quantum Emitter Properties”

Maartens Poster: "Photonic Integration of Diamond Qubits into Hybrid Quantum Circuits"

 

13/11/2023 - Einstein Research Unit Quantum Devices - 3rd Update Meeting

• Sinan Gündoğdu and Sofia Pazzagli: AlGaN Nanophotonic Devices: On-Chip Fabrication and Characterization (poster)
• Maarten van der Hoeven: Photonic Integration of Diamond Qubits into Hybrid Circuits (poster)
• Kilian Unterguggenberger: Towards optically coherent color centers in diamond nanocavities (poster)

 

10/2023 - European Quantum Technologies Conference, Hannover, Germany

• Laura Orphal-Kobin: Optically coherent NV defect centers in diamond nanostructures for enhanced entanglement generation (talk)
• Gregor Pieplow: Generating entangled photonic resource states for quantum network applications with color centers in diamond (poster)
• Tommaso Pregnolato: Nanofabrication protocols for suspended “Sawfish” photonic crystal cavities in diamond (poster)
• Julian Bopp: Magnetic field camera based on infrared absorption ODMR mediated by diamond NV centers (poster)
• Cem Güney Torun: Zero-Magnetic Field Quantum Control and Coherence Measurements of a Tin-Vacancy Color Center in a Diamond Nanopillar as a Spin-Photon Interface (poster)

 

 

10/2023 - IOP-HU Early Career Researcher Conference on Condensed Matter Physics, Liyang, China

Alok Gokhale: Diamond nanocavities as building blocks for spin-photon interfaces in quantum repeaters

Cem Güney Torun: Optical control of tin-vacancy color centers in diamond nanostructures

 

08/2023 - Book a Scientist

Tim Schröder represented us again at Book a Scientist to answer your questions on our research. Thank you for your interest!

 

08/2023 - Group Retreat to Zingst, Baltic Sea

 

06/2023 - CLEO Europe, Munich

• Sinan Gündoğdu: Fabrication of AlGaN Integrated Photonic Devices
• Gregor Pieplow: Coherent Raman spin control for the generation of high fidelity entangled photonic states with group-IV vacancies
• Marco Stucki: Diamond ”Sawfish” photonic crystal cavities
• Cem Güney Torun: Quantum Control and Coherence of Orbital Levels of a Tin-Vacancy Color Center in a Diamond Nanopillar

 

06/2023 - Workshop on Entanglement Assisted Communication Networks, Taipeh, Taiwan

• Gregor Pieplow: Generating entangled photonic resource states for quantum network applications with color centers in diamond

 

17/06/2023 - Long Night of Sciences

 

03/2023 - CLEO

• Julian Bopp, Talk: ‘Sawfish’ Spin-Photon Interface for Near-Unity Emitter-to-Waveguide Coupling
• Laura Orphal-Kobin, Talk: Overcoming Spectral Diffusion for Enhanced Spin-Photon Entanglement using NV Defect Centers in Diamond Nanostructures

 

03/2023 - National Conference on IT-Security Research

• Tim Schröder, Talk

 

03/2023 - DPG Spring Meeting (SAMOP)

• Felipe Perona, Talk: Infrared laser absorption magnetometry with Ensembles of Nitrogen-Vacancy centres
• Gregor Pieplow, Talk: Raman control for ultrahigh fidelity spin gates for the generation of large entangled photonic states with group-IV vacancies
• Tommaso Pregnolato, Talk: Fabrication of suspended "Sawfish" photonic crystal cavities in diamond
• Laura Orphal-Kobin, Talk: Overcoming spectral diffusion of NV defect centers in diamond nanostructures for enhanced entanglement generation
• Cem Güney Torun, Talk: Probing the Orbital Coherence of a Tin-Vacancy Center in a Diamond Nanopillar via Coherent Population Trapping
• Maarten van der Hoeven, Talk: High-precision localization of color centers in diamond for deterministic coupling to quantum photonic nanostructures
• Franziska Herrmann, Poster: Development of a stable, compact and cost-effective laser light source for resonant control of tin-vacancy color centres

 

03/2023 - APS March Meeting

• Sinan Gündoğdu, Talk: 3D Direct Laser Writing without Femtosecond Lasers

 

03/2023 - Hasselt Diamond Workshop

• Tommaso Pregnolato, Poster: Nanofabrication protocols for suspended "Sawfish" photonic crystal cavities in diamond
• Marco Stucki, Poster: Fabrication of "Sawfish" vs "hole"-based photonic crystal cavities: a comparative investigation

 

12/2022 - Christmas Party

Laser tag, vegan burgers and drinks!

 

 

10/2022 - Frontiers in Optics + Laser Science, Rochester, NY

• Cem Güney Torun, Talk: Orbital Coherent Population Trapping with a Tin-Vacancy Color Center

 

23/09/2022 - Climate Strike

Members of IQP participated in the Climate Strike in Berlin to demand actions against a climate catastrophe!

 

09/2022 - SFB BeyondC Conference

• Julian Bopp, Poster: "Robust near-unity cavity-to-fiber coupling of light emitted by diamond color centers embedded in 'Sawfish' photonic crystal cavities"

 

08/2022 - Group Retreat, Elbsandsteingebirge

 

02/07/2022 - Long Night of Sciences

Can you guide light with jet of water? How do you build your own spectrometer out of a CD and a piece of cardboard? We really enjoyed answering these and more of your questions during the Long Night of Sciences. Thank you for coming and see you next year!

 

20/06/22 - QPIS Kickoff Event

Launch of the QPIS project for the development of a Quanten-Photonisch Integrierter Skalierbarer Speicher (QPIS)

04/2022 - Grand Challenge der Quantenkommunikation

• Tim Schröder, Talk: Kickoff
• Gregor Pieplow, Attendance
• Jonas Wollenberg, Attendance

 

09/2021 - DPG SAMOP Meeting

• Cem Güney Torun, Poster: "Optimized diamond inverted nanocones for enhanced color center to fiber coupling"
• Franziska Herrmann, Poster: "Construction of a reliable laser light source for resonant excitation of tin-vacany centers"
• Kilian Unterguggenberger, Poster: "Generation of Optical Pulses for Solid-State Qubit Control"

 

26/08/2021 - Quantum Future Award

• Cem Güney Torun, Finalist and Winner of Audience Award for Best Pitch

 

08/2021 - Group Retreat, Spreewald

 

07/07/2021 - Visit of the Dutch Royals

Laura was given the honor to meet the Dutch royals at TU Berlin and introduce the BOS.QT graduate school to Queen Máxima.

© Flickfeeder

18/03/2021 - Book a Scientist

Speeddating with Science - Tim Schröder participated as an expert and answered your questions on our research with -269 °C cold diamonds.

 

03/2021 - jugend forscht Berlin

• Julian Bopp, Juror

 

02/2021 - Snow in Berlin

More than enough to build a snow dinosaur!

 

17/12/2020 - Online Christmas Party

Everyone at IQP had a lot of fun playing games during our online christmas party. Check out our impressive performance at Zoom-Mosaic!

 

 

10/2020 - BOS.QT Retreat, Max-Born-Institut, Berlin, Germany

• Julian Bopp, Poster: "Photonic Integration of Diamond Nanostructures into On-Chip Waveguides"
• Laura Orphal-Kobin, Poster: "Spectral properties of single NV defect centers in diamond nanopillars"

   

 

01/10/2020 - QBN Meeting on Quantum Sensing

• Felipe Perona, Attendance
• Julian Bopp, Attendance

 

09/2020 - Quantum Symposium (PicoQuant) on Single Photon based Quantum Technologies

• Julian Bopp, Attendance
• Laura Orphal-Kobin, Poster: "Spectral properties of single NV defect centers in diamond nanopillars"
• Cem Güney Torun, Poster: "FE Simulation of a Dipole Emitter Coupled to an Inverted Nanocone"

 

02/2020 - Workshop on Theoretical and Numerical Tools for Nanophotonics

• Cem Güney Torun, Poster: "FE Simulation of a Dipole Emitter Coupled to an Inverted Diamond Nanocone"

 

18/12/2019 - Group Excursion: Christmas Dinner and Bowling

 

10/2019 - Symposium IRIS 2019, Berlin, Germany

• Tim Schröder, Talk: "Communication Links for the Quantum Internet of Things"
• Laura Orphal-Kobin, Poster: "Reduction of spectral diffusion by applying a sequence of optical control pulses"
• Cem Güney Torun, Poster: "Simulations of Dipole Emitters Coupled to Inverted Cone Nanopillar Diamond Structures"

 

10/2019 - Junges Kolleg (Bayerische Akademie der Wissershaften) Workshop, Recent Advances in Photonic Quantum Science and Technology, Munich, Germany

• Tim Schröder, Talk: "Nanophotonic Spin Systems for Quantum Communication"
• Joseph Munns, Talk: "Optimisation of Entanglement Transfer Between Remote Nodes in Photonic Quantum Communication"

 

09/2019 - DPG Fall Meeting on Quantum Science and Information Technologies, Freiburg, Germany

• Laura Orphal-Kobin, Poster: "Reduction of spectral diffusion by applying a sequence of optical control pulses"

 

20/08/2019 - Group Excursion: Sailing on the Spree and Visit to an Adventure Park

 

07/2019 - NanoQI'19 Summer School, Donostia-San Sebastián, Spain

• Laura Orphal-Kobin, Attendance

 

07/2019 - Lindau Nobel Laureate Meeting, Lindau, Germany

• Laura Orphal-Kobin, Attendance

 

05/2019 - Quantum Symposium hosted by PicoQuant, Berlin, Germany

• Laura Orphal-Kobin, Poster: "Reduction of spectral diffusion by applying a sequence of optical control pulses" 

 

05/2019 - Symposium Latsis 2019 on Diamond Photonics - Physics, Technologies & Applications, Lausanne, Switzerland

• Joseph Munns, Poster: "Optimisation of Entanglement Transfer Between Remote Nodes in Photonic Quantum Communication"

03/2019 - WE-Heraeus-Seminar: Diamond Quantum Technologies, Bad Honnef, Germany

• Joseph Munns, Poster: "Towards mode manipulation for optimally interfacing disparate defect centres in diamond"
• Laura Orphal-Kobin, Poster: "Reduction of spectral diffusion by applying a sequence of optical control pulses"