Freiburg 2024 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 5: Ultra-cold Plasmas and Rydberg Systems I (joint session A/Q)
A 5.4: Vortrag
Montag, 11. März 2024, 17:45–18:00, HS 1010
Rydberg Atomtronic Devices — •Philip Kitson1,2, Tobias Haug1, Antonino La Magna3, Oliver Morsch4, and Luigi Amico1,2,5 — 1Technology Innovation Institute, Abu Dhabi, UAE — 2Dipartimento di Fisica e Astronomia and INFN-Sezione di Catania, Catania, Italy — 3CNR-IMM, Catania, Italy — 4CNR-INO, Pisa, Italy — 5Centre for Quantum Technologies, Singapore
Atomtronics realises circuits through the guidance of neutral ultra-cold atoms. However, a recent proposal in the field of atomtronics has been the integration of Rydberg atoms, whereby instead of transporting matter, the established flow is of Rydberg excitations. We take advantage of the blockade and anti-blockade phenomena, resulting from the large dipole moments of such atoms, to prevent or facilitate the flow of excitations throughout networks of Rydberg atoms. In our work, we capitalise on these ideas along with the use of specific atom detunings, in order to create a toolbox of Atomtronics devices. We first formulate a method to control the flow of excitations through a Rydberg network via a detuning upon a gate atom as an analogy to a switch. Second, we generate non-reciprocal flow by using certain conditions of the anti-blockade (the gate atom's detuning and position). Lastly, we devise Rydberg networks to conduct logical decisions. Employing the anti-blockade mechanism we create a classical AND gate and a NOT gate, whereby combining both, we produce a universal logic gate set.
Keywords: Rydberg Atoms; Atomtronics; Rydberg anti-blockade