Mustafa Gündoğan
Humboldt University of Berlin
“Quantum Memories for Space-Based Quantum Networks and Quantum Sensing”
Abstract
Quantum memories are key components of quantum networks, providing coherent storage and synchronization of photonic quantum states. In the first part of this talk, I will discuss our work on extending quantum memories towards space-based quantum networks, including architectures in which memories are deployed on satellites to enable long-distance entanglement distribution. I will outline the main physical requirements and trade-offs, such as storage lifetime, efficiency and mode capacities.
In the second part, I will discuss a complementary use of quantum memories in which the storage itself becomes a sensing resource. Once an optical state is mapped onto a long-lived atomic coherence, phase can accumulate during storage in response to motion, strain, external fields, or differences in proper time. I will summarize our recent work on motion sensing, strain detection, and quantum-clock interferometry with stored excitations at different gravitational potentials. Together, these directions illustrate how quantum memories can serve both as enabling elements for distributed quantum networks and as phase-sensitive interfaces for quantum sensing and metrology.
Mustafa Gündoğan is an Einstein Independent Researcher and leads the Quantum Memory Team within the Integrated Quantum Sensors group at Humboldt University of Berlin, where he previously held a Marie Curie Fellowship. He received his BSc in 2008 in Physics from Bilkent University, followed by an MSc in Physics from Koç University in 2010 and a PhD in Photonics from ICFO – The Institute of Photonic Sciences in Barcelona, where he worked on solid-state quantum memories for photonic qubits. From 2015 to 2019, he was a research associate in the group of Prof. Mete Atatüre at the University of Cambridge, working on solid-state quantum optics and manipulation of single spins in diamond. His current research at Humboldt University explores quantum memories for space-based quantum communication, sensing, and fundamental physics applications.
Date: 15 September 2026, Tuesday
Time: 15:30
Place: SA-240
All interested are cordially invited.