Logical computation demonstrated with a neutral atom quantum processor

• URL: http://arxiv.org/abs/2411.11822v2
• Date: Tue, 19 Nov 2024 18:55:32 GMT
• Title: Logical computation demonstrated with a neutral atom quantum processor
• Authors: Ben W. Reichardt, Adam Paetznick, David Aasen, Ivan Basov, Juan M. Bello-Rivas, Parsa Bonderson, Rui Chao, Wim van Dam, Matthew B. Hastings, Andres Paz, Marcus P. da Silva, Aarthi Sundaram, Krysta M. Svore, Alexander Vaschillo, Zhenghan Wang, Matt Zanner, William B. Cairncross, Cheng-An Chen, Daniel Crow, Hyosub Kim, Jonathan M. Kindem, Jonathan King, Michael McDonald, Matthew A. Norcia, Albert Ryou, Mark Stone, Laura Wadleigh, Katrina Barnes, Peter Battaglino, Thomas C. Bohdanowicz, Graham Booth, Andrew Brown, Mark O. Brown, Kayleigh Cassella, Robin Coxe, Jeffrey M. Epstein, Max Feldkamp, Christopher Griger, Eli Halperin, Andre Heinz, Frederic Hummel, Matthew Jaffe, Antonia M. W. Jones, Eliot Kapit, Krish Kotru, Joseph Lauigan, Ming Li, Jan Marjanovic, Eli Megidish, Matthew Meredith, Ryan Morshead, Juan A. Muniz, Sandeep Narayanaswami, Ciro Nishiguchi, Timothy Paule, Kelly A. Pawlak, Kristen L. Pudenz, David Rodríguez Pérez, Jon Simon, Aaron Smull, Daniel Stack, Miroslav Urbanek, René J. M. van de Veerdonk, Zachary Vendeiro, Robert T. Weverka, Thomas Wilkason, Tsung-Yao Wu, Xin Xie, Evan Zalys-Geller, Xiaogang Zhang, Benjamin J. Bloom,
• Abstract summary: We show the entanglement of 24 logical qubits using the distance-two code, simultaneously detecting errors and correcting for lost qubits. We also implement the Bernstein-Vazirani algorithm with up to 28 logical qubits encoded in the [[4,1,2]] code, showing better-than-physical error rates. These results begin to clear a path for achieving scientific quantum advantage with a programmable neutral atom quantum processor.
• Score: 26.395934835344015
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Transitioning from quantum computation on physical qubits to quantum computation on encoded, logical qubits can improve the error rate of operations, and will be essential for realizing valuable quantum computational advantages. Using a neutral atom quantum processor with 256 qubits, each an individual Ytterbium atom, we demonstrate the entanglement of 24 logical qubits using the distance-two [[4,2,2]] code, simultaneously detecting errors and correcting for lost qubits. We also implement the Bernstein-Vazirani algorithm with up to 28 logical qubits encoded in the [[4,1,2]] code, showing better-than-physical error rates. We demonstrate fault-tolerant quantum computation in our approach, guided by the proposal of Gottesman (2016), by performing repeated loss correction for both structured and random circuits encoded in the [[4,2,2]] code. Finally, since distance-two codes can correct qubit loss, but not other errors, we show repeated loss and error correction using the distance-three [[9,1,3]] Bacon-Shor code. These results begin to clear a path for achieving scientific quantum advantage with a programmable neutral atom quantum processor.

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