SAMOP 2023 – wissenschaftliches Programm
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QI: Fachverband Quanteninformation
QI 22: Quantum Technologies II (joint session Q/MO/QI)
QI 22.6: Vortrag
Mittwoch, 8. März 2023, 16:00–16:15, E214
N00N-states for super-resolving quantum imaging and sensing — •Gil Zimmermann1 and Fabian Steinlechner1,2 — 1Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University, 07743 Jena, Germany — 2Fraunhofer Institute for Applied Optics and Precision Engineering IOF, 07745 Jena, Germany
Quantum measurement techniques can serve to improve precision imaging and sensing through entanglement. Employing N00N-states, i.e., maximally path-entangled photon-number states of two modes, the Heisenberg limit 1/N with N photons can be reached in precision phase measurements, thus overcoming the shot-noise limit. Furthermore, the Rayleigh diffraction limit can be overcome by a factor N. Therefore, the goal is to efficiently generate high N00N-states with N>2 to improve current sensing schemes achieving super-resolution and super-sensitivity. High-N00N states with N=5 photons have already been generated experimentally with high fidelity, as shown by Afek et al. This talk will focus on schemes with relatively low complexity to generate high N00N-states. In addition, applications of high-N00N states, e.g., in the context of quantum-enhanced lidar systems or quantum microscopy, are discussed, taking into account their high fragility due to interactions with the environment.