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Apr 24, 2025
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Add Quandary logo #46

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Add Quandary logo and github status badge to readme
tdrwenski Apr 24, 2025
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Remove duplicate quandary from README.md
tdrwenski Apr 24, 2025
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5 changes: 4 additions & 1 deletion README.md
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# Quandary - Optimal control for open and closed quantum systems
# <img src="/quandary_logo/quandary-logo_logo-inline-color.png" width="512" alt="Quandary"/>
[![Build and Test](https://github.com/LLNL/quandary/actions/workflows/test.yml/badge.svg)](https://github.com/LLNL/quandary/actions/workflows/test.yml)

# Optimal control for open and closed quantum systems
Quandary simulates and optimizes the time evolution of closed and open quantum systems, given a Hamiltonian that models driven superconducting quantum devices. The
underlying dynamics are modelled by either Schroedinger's equation (closed systems, state vector), or Lindblad's master equation (open systems, density matrix). Quandary solves the respective ordinary differential equation (ODE) numerically by applying a time-stepping integration scheme, and applies a gradient-based optimization scheme to design optimal control pulses that drive the quantum system to desired targets.
The target can be a unitary gate, i.e. optimizing for pulses that
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