4 papers
Epitaxial single T centres in silicon-on-insulator
Christian H. Christiansen, Kasper H. Nielsen, Alisha Nanwani +26
Spin-photon interfaces based on silicon quantum emitters offer a scalable platform for quantum computing and networking. However, achieving coherent photon emission remains a prima…
Entanglement Enhanced Sensing with Qubits affected by non-Markovian Dephasing
Noah Kaufmann, Kasper H. Nielsen, Eva M. González-Ruiz +1
Entanglement has been proposed as a means to improve the sensitivity of sensing weak signals. While the degree of this quantum advantage is well understood in noiseless settings, t…
Photon Sorting with a Quantum Emitter
Kasper H. Nielsen, Etienne Corminboeuf, Benedikt Tissot +8
High-quality photonic Bell state measurements (BSMs) enable scalable universal quantum computing and long distance quantum communication. However, when implemented with linear opti…
Programmable Nonlinear Quantum Photonic Circuits
Kasper H. Nielsen, Ying Wang, Edward Deacon +9
The lack of interactions between single photons prohibits direct nonlinear operations in quantum optical circuits, representing a central obstacle in photonic quantum technologies.…