Talk on: Easily-distillable entanglement

Abstract: The distribution of entanglement throughout a quantum computer can often be fraught with noise problems when qubits are separated.  However, if small local nodes can operate reliably, then many noise problems can be overcome by distilling many partially entangled pairs of qubits into fewer more entangled pairs of qubits.

Recurrence is the paradigm example of a distillation protocol.  However, recurrence suffers from some undesirable features (such as nesting and twirling).  I shall talk about approaches to distillation without these unsavory features of recurrence.   I will present some case examples where prominent obstacles to quantum computing -such as extreme photon loss- can be dealt with using especially easy forms of distillation.  

Indeed, almost every class of mixed state lends itself to an improved distillation protocol, with only a single class of mixed state resisting simplification.