Realizing distance-selective interactions in a Rydberg-dressed atom array

• URL: http://arxiv.org/abs/2110.10125v1
• Date: Tue, 19 Oct 2021 17:39:48 GMT
• Title: Realizing distance-selective interactions in a Rydberg-dressed atom array
• Authors: Simon Hollerith, Kritsana Srakaew, David Wei, Antonio Rubio-Abadal, Daniel Adler, Pascal Weckesser, Andreas Kruckenhauser, Valentin Walther, Rick van Bijnen, Jun Rui, Christian Gross, Immanuel Bloch, and Johannes Zeiher
• Abstract summary: Measurement-based quantum computing relies on the rapid creation of large-scale entanglement in a register of stable qubits. Rydberg states are well suited to store quantum information, and entanglement can be created using highly-excited Rydberg states. Here, we engineer distance-selective interactions that are strongly peaked in distance through off-resonant laser coupling of molecular potentials between Rydberg atom pairs.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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.

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