The power of noisy quantum states and the advantage of resource dilution

Understand

Entanglement distillation allows to convert noisy quantum states into singlets, which can in turn be used for various quantum technological tasks, such as quantum teleportation and quantum key distribution.

• Entanglement dilution is the inverse process: singlets are converted into quantum states with less entanglement.
• While the usefulness of distillation is apparent, practical applications of entanglement dilution are less obvious.
• Here, we show that entanglement dilution can increase the resilience of shared quantum states to local noise.