8 papers
Mitigating many-body quantum crosstalk with tensor-network robust control
Nguyen H. Le, Florian Mintert, Eran Ginossar
Quantum crosstalk poses a major challenge to scaling up quantum computations as its strength is typically unknown and its effect accumulates exponentially as system size grows. Her…
Minimal Time Robust Control for Two Superconducting Qubits
Niril George, Joseph L. Allen, Robert Kosut +1
High-fidelity quantum gates are crucial for achieving fault-tolerant quantum computing; however, decoherence significantly reduces gate fidelities during long operation times. Alth…
Stochastic phase-space simulation of multimode cat states via the positive-P representation
Yi Shi, Alex Ferrier, Piotr Deuar +2
We present a comprehensive study of the transient dynamics of multimode Schrödinger cat states in dissipatively coupled resonator arrays using the positive-P phase-space method. B…
Symmetry-protected states of interacting qubits in superconducting quantum circuits
Yi Shi, Eran Ginossar, Michael Stern +1
Superconducting circuits are one of the leading candidates for storing and manipulating quantum information. Among them, qubits embedded with intrinsic noise protection have seen r…
Towards a micromechanical qubit based on quantized oscillations in superfluid helium
Priya Sharma, Jens Koch, Eran Ginossar
Superconducting circuits can exhibit quantized energy levels and long coherence times. Harnessing the anharmonicity offered by Josephson junctions, such circuits have been successf…
A proposal for charge basis tomography of superconducting qubits
Elena Lupo, Daniel Long, Daniel Dahan +4
We introduce a general protocol for obtaining the charge basis density matrix of a superconducting quantum circuit. Inspired by cavity state tomography, our protocol combines Josep…