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Bilocal versus nonbilocal correlations in entanglement-swapping experiments
Entanglement swapping is a process bywhich two initially independent quantum systems can become entangled and generate nonlocal correlations. To characterize such correlations, we compare them to… Expand
One-sided device-independent quantum key distribution: Security, feasibility, and the connection with steering
We analyze the security and feasibility of a protocol for quantum key distribution (QKD) in a context where only one of the two parties trusts his measurement apparatus. This scenario lies naturally… Expand
SECOQC White Paper on Quantum Key Distribution and Cryptography
The SECOQC White Paper on Quantum Key Distribution and Cryptography is the outcome on a thorough consultation and discussion among the participants of the European project SECoQC. Expand
Practical private database queries based on a quantum-key-distribution protocol
Private queries allow a user, Alice, to learn an element of a database held by a provider, Bob, without revealing which element she is interested in, while limiting her information about the other… Expand
Security of two quantum cryptography protocols using the same four qubit states (18 pages)
The first quantum cryptography protocol, proposed by Bennett and Brassard in 1984 (BB84), has been widely studied in recent years. This protocol uses four states (more precisely, two complementary… Expand
Testing the speed of ‘spooky action at a distance’
Correlations are generally described by one of two mechanisms: either a first event influences a second one by sending information encoded in bosons or other physical carriers, or the correlated… Expand
Zero-error attacks and detection statistics in the coherent one-way protocol for quantum cryptography
- C. Branciard, N. Gisin, N. Lütkenhaus, V. Scarani
- Computer Science, Physics
- Quantum Inf. Comput.
- 12 September 2006
A study of the security of the Coherent One-Way (COW) protocol for quantumcryptography, proposed recently as a simple and fast experimental scheme. Expand
Communication through coherent control of quantum channels
A completely depolarising quantum channel always outputs a fully mixed state and thus cannot transmit any information. In a recent Letter [D. Ebler et al., Phys. Rev. Lett. 120, 120502 (2018)], it… Expand
Measurement-device-independent entanglement witnesses for all entangled quantum states.
The problem of demonstrating entanglement is central to quantum information processing applications. Resorting to standard entanglement witnesses requires one to perfectly trust the implementation of… Expand
Quantifying the nonlocality of Greenberger-Horne-Zeilinger quantum correlations by a bounded communication simulation protocol.
The simulation of quantum correlations with finite nonlocal resources, such as classical communication, gives a natural way to quantify their nonlocality. While multipartite nonlocal correlations… Expand