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41 papers · 2 filters
QuOCS: The Quantum Optimal Control Suite
Marco Rossignolo, Thomas Reisser, Alastair Marshall +9
Quantum optimal control includes the family of pulse-shaping algorithms that aim to unlock the full potential of a variety of quantum technologies. Our Quantum Optimal Control Suit…
An error-protected cross-resonance switch in weakly-tuneable architectures
Xuexin Xu, M. Ansari
In two-qubit gates activated by microwave pulses, by turning pulse on or off, the state of qubits are swapped between entangled or idle modes. In either mode, the presence of stray…
Soliton versus single photon quantum dynamics in arrays of superconducting qubits
Ben Blain, Giampiero Marchegiani, Juan Polo +2
Superconducting circuits constitute a promising platform for future implementation of quantum processors and simulators. Arrays of capacitively coupled transmon qubits naturally im…
Perturbative Analysis of Quasi-periodic Patterning of Transmon Quantum Computers: Enhancement of Many-Body Localization
Evangelos Varvelis, David P. DiVincenzo
Recently it has been shown that transmon qubit architectures experience a transition between a many-body localized and a quantum chaotic phase. While it is crucial for quantum comp…
Generalized Belief Propagation Algorithms for Decoding of Surface Codes
Josias Old, Manuel Rispler
Belief propagation (BP) is well-known as a low complexity decoding algorithm with a strong performance for important classes of quantum error correcting codes, e.g. notably for the…
Analytical evaluation of the coefficients of the Hu-Paz-Zhang master equation: Ohmic spectral density, zero temperature, and consistency check
G. Homa, J. Z. Bernád, A. Csordás
We investigate the exact master equation of Hu, Paz, and Zhang for a quantum harmonic oscillator at zero temperature with a Lorentz-Drude type Ohmic spectral density. This master e…