Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Ribeiro, Jeremy"'
Autor:
Ribeiro, Jeremy, Wehner, Stephanie
Among the most studied tasks in Quantum Cryptography one can find Bit Commitment (BC) and Oblivious Transfer (OT), two central cryptographic primitives. In this paper we propose for the first time protocols for these tasks in the measurement-device i
Externí odkaz:
http://arxiv.org/abs/2004.10515
Publikováno v:
Phys. Rev. A 102, 022405 (2020)
We consider the task of secure multi-party distributed quantum computation on a quantum network. We propose a protocol based on quantum error correction which reduces the number of necessary qubits. That is, each of the $n$ nodes in our protocol requ
Externí odkaz:
http://arxiv.org/abs/2004.10486
Publikováno v:
Phys. Rev. A 101, 062321 (2020)
We consider the asymptotic key rates achieved in the simplest quantum key distribution protocols, namely the BB84 and the six-state protocols, when non-uniform noise is present in the system. We first observe that higher qubit error rates do not nece
Externí odkaz:
http://arxiv.org/abs/2002.07305
Publikováno v:
Phys. Rev. A 101, 032332 (2020)
We consider the task of sharing a secret quantum state in a quantum network in a verifiable way. We propose a protocol that achieves this task, while reducing the number of required qubits, as compared to the existing protocols. To achieve this, we c
Externí odkaz:
http://arxiv.org/abs/1911.09470
We consider testing the ability of quantum network nodes to execute multi-round quantum protocols. Specifically, we examine protocols in which the nodes are capable of performing quantum gates, storing qubits and exchanging said qubits over the netwo
Externí odkaz:
http://arxiv.org/abs/1910.10004
Akademický článek
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Publikováno v:
Quantum Sci. Technol. 4 (2019) 035011
In the implementation of device-independent quantum key distribution we are interested in maximizing the key rate, i.e. the number of key bits that can be obtained per signal, for a fixed security parameter. In the finite size regime, we furthermore
Externí odkaz:
http://arxiv.org/abs/1811.07983
Publikováno v:
Phys. Rev. A 100, 032310 (2019)
Generating entanglement in a distributed scenario is a fundamental task for implementing the quantum network of the future. We here report a protocol that uses only linear optics for generating GHZ states with high fidelities in a nearby node configu
Externí odkaz:
http://arxiv.org/abs/1805.10663
Publikováno v:
Phys. Rev. A 97, 022307 (2018)
We present the first security analysis of conference key agreement (CKA) in the most adversarial model of device independence (DI). Our protocol can be implemented {by any experimental setup} that is capable of performing Bell tests (specifically, we
Externí odkaz:
http://arxiv.org/abs/1708.00798
Autor:
Rozpędek, Filip, Goodenough, Kenneth, Ribeiro, Jérémy, Kalb, Norbert, Vivoli, Valentina Caprara, Reiserer, Andreas, Hanson, Ronald, Wehner, Stephanie, Elkouss, David
Publikováno v:
F Rozp\k{e}dek et al 2018 Quantum Sci. Technol. 3 034002
Quantum key distribution allows for the generation of a secret key between distant parties connected by a quantum channel such as optical fibre or free space. Unfortunately, the rate of generation of a secret key by direct transmission is fundamental
Externí odkaz:
http://arxiv.org/abs/1705.00043