Observation of Shapiro steps in an ultracold atomic Josephson junction
arXiv:2409.03340 · doi:10.1126/science.ads9061
Abstract
The current-voltage characteristic of a driven superconducting Josephson junction displays discrete steps. This phenomenon, called the Shapiro steps, forms today's voltage standard! Here, we report the observation of Shapiro steps in a driven Josephson junction in a gas of ultracold atoms. We demonstrate that the steps exhibit universal features, and provide insight into the microscopic dissipative dynamics that we directly observe in the experiment. We find that the steps are directly connected to phonon emission and nucleation of solitonic excitations, whose dynamics we follow in space and time. The experimental results are underpinned by extensive numerical simulations based on classical-field dynamics and may enable metrological and fundamental advances.
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References in corpus (32)
- Supplementary information for "Quantum supremacy using a programmable superconducting processor"
- Charge insensitive qubit design derived from the Cooper pair box
- Direct Observation of Tunneling and Nonlinear Self-Trapping in a single Bosonic Josephson Junction
- Extension of Bogoliubov theory to quasi-condensates
- Experimental realization of Josephson junctions for an Atom SQUID
- Stationary and non-stationary fluid flow of a Bose-Einstein condensate through a penetrable barrier
- Roadmap on Atomtronics: State of the art and perspective
- Josephson effect in fermionic superfluids across the BEC-BCS crossover
- Josephson effects in dilute Bose-Einstein condensates
- Atomtronic circuits: from many-body physics to quantum technologies
- Dynamics of a tunable superfluid junction
- Motion of a Solitonic Vortex in the BEC-BCS Crossover
- Connecting dissipation and phase slips in a Josephson junction between fermionic superfluids
- Josephson tunneling between weakly interacting Bose-Einstein condensates
- Strongly correlated superfluid order parameters from dc Josephson supercurrents
- Quantized current steps due to the a.c. coherent quantum phase-slip effect
- An ideal Josephson junction in an ultracold two-dimensional Fermi gas
- Parametric Amplification of a Terahertz Quantum Plasma Wave
- Tunneling transport of unitary fermions across the superfluid transition
- Critical transport and vortex dynamics in a thin atomic Josephson junction
- Contact resistance and phase slips in mesoscopic superfluid atom transport
- Quantum gas magnifier for sub-lattice-resolved imaging of three-dimensional quantum systems
- Probing superfluidity of Bose-Einstein condensates via laser stirring
- Chemical-potential standard for atomic Bose-Einstein condensates
- Shapiro effect in atomchip-based bosonic Josephson junctions
- Josephson junction dynamics in a two-dimensional ultracold Bose gas
- Floquet engineering a bosonic Josephson junction
- Shapiro steps in driven atomic Josephson junctions
- Superfluidity of a laser-stirred Bose-Einstein condensate
- Stability analysis and attractor dynamics of 3D dark solitons with localized dissipation
- Dynamical phase diagram of a one dimensional Bose gas in a box with a tunable weak-link: from Bose-Josephson oscillations to shock waves
- Shapiro steps in strongly-interacting Fermi gases