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Cecilia Lancien

dblp:157/3534 · also Cécilia Lancien · DBLP profile ↗
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2ranked-venue papers
0as first author
0since 2021 · last 2020
0000-0003-2702-7775ORCID · corroborated

Domains — the database's venue-derived domains; a paper can count in several

Theory of computation · 1Applied, interdisciplinary, general and emerging computing · 1

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Theoretical computer science
1 paper
Quantum computing and quantum information · 100%

Topics — the 3 heaviest of 3, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Quantum computing and quantum information
quantum entanglement		 0.412020
Random Private Quantum States · IEEE Trans. Inf. Theory 2020
Quantum computing and quantum information › quantum entanglement
bound entanglement		 0.112020
Random Private Quantum States · IEEE Trans. Inf. Theory 2020
Quantum computing and quantum information
entanglement measures		 0.112020
Random Private Quantum States · IEEE Trans. Inf. Theory 2020

Methods — techniques the papers use, named apart from their topics

relative entropy bound · 0.4operator ordering · 0.4locally restricted measurements · 0.4
YearPublicationVenuePosition
2020 Random Private Quantum States
abstract
The study of properties of randomly chosen quantum states has in recent years led to many insights into quantum entanglement. In this work, we study private quantum states from this point of view. Private quantum states are bipartite quantum states characterised by the property that carrying out simple local measurements yields a secret bit. This feature is shared by the maximally entangled pair of quantum bits, yet private quantum states are more general and can in their most extreme form be almost bound entangled. In this work, we study the entanglement properties of random private quantum states and show that they are hardly distinguishable from separable states and thus have low repeatable key, despite containing one bit of key. The technical tools we develop are centred around the concept of locally restricted measurements and include a new operator ordering, bounds on norms under tensoring with entangled states and a continuity bound for a relative entropy measure.
Matthias Christandl, Roberto Ferrara, Cecilia Lancien
 IEEE Trans. Inf. Theory3
2018 Random Private Quantum States
abstract
The study of properties of randomly chosen quantum states has in recent years led to many insights into quantum entanglement. In this work, we study private quantum states from this point of view. Private quantum states are bipartite quantum states characterized by the property that carrying out simple local measurements yields a secret bit. This feature is shared by the maximally entangled pair of quantum bits, yet private quantum states are more general and can in their most extreme form be almost bound entangled. In this work, we study the entanglement properties of random private quantum states and show that they are hardly distinguishable from separable states and thus have low repeatable key, despite containing one bit of key. The technical tools we develop are centered around the concept of locally restricted measurements and include a new operator ordering, bounds on norms under tensoring with entangled states and continuity bounds for relative entropy measures. A full version of this paper is accessible at: http://arxiv.org/abs/1801.2861 [1].
Matthias Christandl, Roberto Ferrara, Cecilia Lancien
 ISIT3