Systems R&D
04.10.21Full control of superconducting qubits with combined on-chip microwave and flux lines
We present a method to integrate a microwave line and a flux line into a single "XYZ line."
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The latest in Quantum Thinking
Entanglement across separate silicon dies in a modular superconducting qubit device
We demonstrate a modular solid state architecture with deterministic inter-module coupling between four physically separate, interchangeable superconducting qubit integrated circuits.
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28.09.21Entanglement across separate silicon dies in a modular superconducting qubit device
We demonstrate a modular solid state architecture with deterministic inter-module coupling between four physically separate, interchangeable superconducting qubit integrated circuits.
Learn MoreSystems R&D
30.08.21TOF-SIMS analysis of decoherence sources in Nb superconducting resonators
We utilize time-of-flight secondary ion mass spectrometry (TOF-SIMS) to understand the role specific fabrication procedures play in introducing such dissipation mechanisms in these complex systems.
Algorithms & Applications
30.08.21Benchmarking variational quantum eigensolvers for the square-octagon-lattice Kitaev model
We consider the Kitaev spin model on a hardware-native square-octagon qubit connectivity map, and examine the possibility of efficiently probing its rich phase diagram with VQE approaches.
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30.08.21Quantum simulation of dihedral gauge theories
We describe the simulation of dihedral gauge theories on digital quantum computers.
Algorithms & Applications
30.08.21Quantum simulation of Φ⁴ theories in qudit systems
We discuss the implementation of quantum algorithms for lattice Φ⁴ theory on circuit quantum electrodynamics (cQED) system.
Systems R&D
27.08.21Parametric-resonance entangling gates with a tunable coupler
We realize a parametric-resonance gate, which is activated by bringing the average frequency of the modulated qubit in resonance with a static-frequency qubit while approximately retaining the bare qubit-qubit coupling.
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23.08.21Discovery of Nb hydride precipitates in superconducting qubits
We report the first evidence of the formation of niobium hydrides within niobium films on silicon substrates in superconducting qubits fabricated at Rigetti Computing.
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03.08.21Realization of arbitrary doubly-controlled quantum phase gates
We introduce a high-fidelity gate set inspired by a proposal for near-term quantum advantage in optimization problems.
Systems R&D
25.06.21Floating tunable coupler for scalable quantum computing architectures
We propose a floating tunable coupler that does not rely on direct qubit-qubit coupling capacitances to achieve the zero-coupling condition.
Read MoreAlgorithms & Applications
04.05.21Practical verification of quantum properties in quantum approximate optimization runs
We introduce a practical method to verify key non-classical properties of a quantum algorithm’s implementation on a physical device.
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16.04.21Dynamical sweet spot engineering via two-tone flux modulation of superconducting qubits
We experimentally demonstrate that two-tone flux modulation can be used to create a continuum of dynamical sweet spots.
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