Alexander Keesling
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View article: Probing quantum floating phases in Rydberg atom arrays
Probing quantum floating phases in Rydberg atom arrays Open
The floating phase, a critical incommensurate phase, has been theoretically predicted as a potential intermediate phase between crystalline ordered and disordered phases. In this study, we investigate the different quantum phases that aris…
View article: Aquila: QuEra's 256-qubit neutral-atom quantum computer
Aquila: QuEra's 256-qubit neutral-atom quantum computer Open
The neutral-atom quantum computer "Aquila" is QuEra's latest device available through the Braket cloud service on Amazon Web Services (AWS). Aquila is a "field-programmable qubit array" (FPQA) operated as an analog Hamiltonian simulator on…
View article: Hardware-Efficient, Fault-Tolerant Quantum Computation with Rydberg Atoms
Hardware-Efficient, Fault-Tolerant Quantum Computation with Rydberg Atoms Open
Neutral-atom arrays have recently emerged as a promising platform for quantum information processing. One important remaining roadblock for the large-scale application of these systems is the ability to perform error-corrected quantum oper…
View article: Industry applications of neutral-atom quantum computing solving independent set problems
Industry applications of neutral-atom quantum computing solving independent set problems Open
Architectures for quantum computing based on neutral atoms have risen to prominence as candidates for both near and long-term applications. These devices are particularly well suited to solve independent set problems, as the combinatorial …
View article: Dispersive optical systems for scalable Raman driving of hyperfine qubits
Dispersive optical systems for scalable Raman driving of hyperfine qubits Open
Hyperfine atomic states are among the most promising candidates for qubit\nencoding in quantum information processing. In atomic systems, hyperfine\ntransitions are typically driven through a two-photon Raman process by a laser\nfield whic…
View article: Quantum Optimization of Maximum Independent Set using Rydberg Atom Arrays
Quantum Optimization of Maximum Independent Set using Rydberg Atom Arrays Open
Data and code for the publication Quantum Optimization of Maximum Independent Set using Rydberg Atom Arrays.
View article: Probing topological spin liquids on a programmable quantum simulator
Probing topological spin liquids on a programmable quantum simulator Open
Synthesizing topological order Topologically ordered matter exhibits long-range quantum entanglement. However, measuring this entanglement in real materials is extremely tricky. Now, two groups take a different approach and turn to synthet…
View article: Probing Topological Spin Liquids on a Programmable Quantum Simulator
Probing Topological Spin Liquids on a Programmable Quantum Simulator Open
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View article: Hardware-Efficient, Fault-Tolerant Quantum Computation with Rydberg Atoms
Hardware-Efficient, Fault-Tolerant Quantum Computation with Rydberg Atoms Open
Neutral atom arrays have recently emerged as a promising platform for quantum information processing. One important remaining roadblock for the large-scale application of these systems is the ability to perform error-corrected quantum oper…
View article: Integrating Neural Networks with a Quantum Simulator for State Reconstruction
Integrating Neural Networks with a Quantum Simulator for State Reconstruction Open
We demonstrate quantum many-body state reconstruction from experimental data generated by a programmable quantum simulator by means of a neural-network model incorporating known experimental errors. Specifically, we extract restricted Bolt…
View article: Parallel Implementation of High-Fidelity Multiqubit Gates with Neutral Atoms
Parallel Implementation of High-Fidelity Multiqubit Gates with Neutral Atoms Open
We report the implementation of universal two- and three-qubit entangling gates on neutral-atom qubits encoded in long-lived hyperfine ground states. The gates are mediated by excitation to strongly interacting Rydberg states and are imple…
View article: Generation and manipulation of Schrödinger cat states in Rydberg atom arrays
Generation and manipulation of Schrödinger cat states in Rydberg atom arrays Open
Entanglement goes large The success of quantum computing relies on the ability to entangle large-scale systems. Various platforms are being pursued, with architectures based on superconducting qubits and trapped atoms being the most advanc…
View article: Large-Scale Uniform Optical Focus Array Generation with a Phase Spatial Light Modulator
Large-Scale Uniform Optical Focus Array Generation with a Phase Spatial Light Modulator Open
We report a new method to generate uniform large-scale optical focus arrays (LOFAs). By identifying and removing undesired phase rotation in the iterative Fourier-transform algorithm (IFTA), our approach rapidly produces computer-generated…
View article: High-Fidelity Control and Entanglement of Rydberg-Atom Qubits
High-Fidelity Control and Entanglement of Rydberg-Atom Qubits Open
Individual neutral atoms excited to Rydberg states are a promising platform for quantum simulation and quantum information processing. However, experimental progress to date has been limited by short coherence times and relatively low gate…
View article: Probing quantum critical dynamics on a programmable Rydberg simulator
Probing quantum critical dynamics on a programmable Rydberg simulator Open
Quantum phase transitions (QPTs) involve transformations between different states of matter that are driven by quantum fluctuations. These fluctuations play a dominant role in the quantum critical region surrounding the transition point, w…
View article: Cold Matter Assembled Atom-by-Atom
Cold Matter Assembled Atom-by-Atom Open
The realization of large-scale fully controllable quantum systems is an exciting frontier in modern physical science. We use atom-by-atom assembly to implement a novel platform for the deterministic preparation of regular arrays of individ…