Nils Trautmann
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Cooperative quantum electrodynamical processes in an ellipsoidal cavity Open
We investigate spontaneous photon emission and absorption processes of two two- level atoms trapped close to the focal points of an ellipsoidal cavity, thereby taking into account the full multimode scenario. In particular, we calculate th…
Quantum simulation of the dynamical Casimir effect with trapped ions Open
Quantum vacuum fluctuations are a direct manifestation of Heisenberg’s uncertainty principle. The dynamical Casimir effect (DCE) allows for the observation of these vacuum fluctuations by turning them into real, observable photons. However…
Three-dimensional imaging of integrated-circuit activity using quantum defects in diamond Open
The continuous scaling of semiconductor-based technologies to micron and sub-micron regimes has resulted in higher device density and lower power dissipation. Many physical phenomena such as self-heating or current leakage become significa…
Environment-Assisted Quantum Transport in a 10-qubit Network Open
The way in which energy is transported through an interacting system governs fundamental properties in nature such as thermal and electric conductivity or phase changes. Remarkably, environmental noise can enhance the transport, an effect …
Trapped-ion quantum simulation of excitation transport: Disordered, noisy, and long-range connected quantum networks Open
The transport of excitations governs fundamental properties of matter.\nParticularly rich physics emerges in the interplay between disorder and\nenvironmental noise, even in small systems such as photosynthetic biomolecules.\nCounterintuit…
View article: Holographic quantum imaging: reconstructing spatial properties via two-particle interference
Holographic quantum imaging: reconstructing spatial properties via two-particle interference Open
Two particle interference phenomena, such as the Hong–Ou–Mandel (HOM) effect, are a direct manifestation of the nature of the symmetry properties of indistinguishable particles as described by quantum mechanics. The HOM effect has recently…
Will a Decaying Atom Feel a Friction Force? Open
We show how a simple calculation leads to the surprising result that an excited two-level atom moving through a vacuum sees a tiny friction force of first order in v/c. At first sight this seems to be in obvious contradiction to other calc…
Interfaces between light and matter for quantum information processing Open
Quantum communication and quantum computation are anticipated quantum technologies which enable us to tackle problems which are hard or even impossible to solve by classical means. A major challenge in implementing real life applications f…
Efficient single-photon absorption by a trapped moving atom Open
The influence of the center of mass motion of a trapped two level system on\nefficient resonant single photon absorption is investigated. It is shown that\nthis absorption process depends strongly on the ratio between the\ncharacteristic t…
Dissipation-enabled efficient excitation transfer from a single photon to a single quantum emitter Open
We propose a scheme for triggering a dissipation-dominated highly efficient excitation transfer from a single-photon wave packet to a single quantum emitter. This single-photon-induced optical pumping turns dominant dissipative processes, …