Realizing Distance-Selective Interactions in a Rydberg-Dressed Atom Array

Hollerith, Simon; Srakaew, Kritsana; Wei, David; Rubio-Abadal, Antonio; Adler, Daniel; Weckesser, Pascal; Kruckenhauser, Andreas; Walther, Valentin; Bijnen, Rick van; Rui, Jun; Gross, Christian; Bloch, Immanuel and Zeiher, Johannes (2022): Realizing Distance-Selective Interactions in a Rydberg-Dressed Atom Array. In: Physical Review Letters, Vol. 128, No. 11, 113602

Abstract

Measurement-based quantum computing relies on the rapid creation of large-scale entanglement in a register of stable qubits. Atomic arrays are well suited to store quantum information, and entanglement can be created using highly-excited Rydberg states. Typically, isolating pairs during gate operation is difficult because Rydberg interactions feature long tails at large distances. Here, we engineer distance-selective interactions that are strongly peaked in distance through off-resonant laser coupling of molecular potentials between Rydberg atom pairs. Employing quantum gas microscopy, we verify the dressed interactions by observing correlated phase evolution using many-body Ramsey interferometry. We identify atom loss and coupling to continuum modes as a limitation of our present scheme and outline paths to mitigate these effects, paving the way towards the creation of large-scale entanglement.

• Item Type: Journal article
• Faculties: Physics
• Subjects: 500 Science > 530 Physics
• ISSN: 0031-9007
• Language: English
• DFG: Gefördert durch die Deutsche Forschungsgemeinschaft (DFG) - 390814868
• DFG: Gefördert durch die Deutsche Forschungsgemeinschaft (DFG) - 273920612