Dear all,
please join us on Monday at 4pm for a quantum information seminar by
Earl Campbell.
Title: Continuous-variable entanglement distillation and
non-commutative central limit theorems
Speaker: Earl Campbell (Freie Universitaet Berlin)
Abstract:
Entanglement distillation transforms weakly entangled noisy states
into highly entangled states, a primitive to be used in quantum
repeater schemes and other protocols designed for quantum
communication and key distribution. In this work, we present a
comprehensive framework for continuous-variable entanglement
distillation schemes that convert noisy non-Gaussian states into
Gaussian ones in many iterations of the protocol. Instances of these
protocols include the recursive Gaussifier protocol and the pumping
Gaussifier protocol. The flexibility of these protocols give rise to
several beneficial trade-offs related to success probabilities or
memory requirements that can be adjusted to reflect experimental
specifics. Despite these protocols involving measurements, we relate
the convergence in this protocols to new instances of
non-commutative central limit theorems. Implications of the findings
for quantum repeater schemes are discussed.
Date: Monday, April 15, 2013 - 4:00 pm
Location: Time Room (294)
Best,
Markus