Secure Deterministic Communication without Entanglement

Lucamarini, Marco; Mancini, Stefano

doi:10.1103/physrevlett.94.140501

Cited by 422 publications

(362 citation statements)

References 22 publications

(19 reference statements)

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“…The most typical communication tasks are quantum key distribution (QKD) [7][8][9][10][11][12][13][14][15][16][17], reliable transmission of quantum information [18,19] and distribution of entanglement [20][21][22]. The latter allows two remote parties to implement powerful protocols such as quantum teleportation [23][24][25], which is a crucial tool for the contruction of a future quantum Internet [26,27].…”

Section: Introductionmentioning

confidence: 99%

General bounds for sender-receiver capacities in multipoint quantum communications

Laurenza

Pirandola

2017

Phys. Rev. A

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We investigate the maximum rates for transmitting quantum information, distilling entanglement and distributing secret keys between a sender and a receiver in a multipoint communication scenario, with the assistance of unlimited two-way classical communication involving all parties. First we consider the case where a sender communicates with an arbitrary number of receivers, so called quantum broadcast channel. Here we also provide a simple analysis in the bosonic setting where we consider quantum broadcasting through a sequence of beamsplitters. Then, we consider the opposite case where an arbitrary number of senders communicate with a single receiver, so called quantum multiple-access channel. Finally, we study the general case of all-in-all quantum communication where an arbitrary number of senders communicate with an arbitrary number of receivers. Since our bounds are formulated for quantum systems of arbitrary dimension, they can be applied to many different physical scenarios involving multipoint quantum communication.

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Section: Introductionmentioning

confidence: 99%

General bounds for sender-receiver capacities in multipoint quantum communications

Laurenza

Pirandola

2017

Phys. Rev. A

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“…On the other hand copying of quantum devices did not receive so much attention even though it is a fundamental and equally important quantum information processing task. Similarly to states, quantum transformations are often used in quantum key distribution schemes [8][9][10][11] to encode bits, so analysis of possible attacks by cloning them are needed. Cloning of transformations was yet analyzed only for the case of unitary transformations [11].…”

Section: Introductionmentioning

confidence: 99%

Cloning of a quantum measurement

et al. 2011

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We analyze quantum algorithms for cloning of a quantum measurement. Our aim is to mimic two uses of a device performing an unknown von Neumann measurement with a single use of the device. When the unknown device has to be used before the bipartite state to be measured is available we talk about 1 → 2 learning of the measurement, otherwise the task is called 1 → 2 cloning of a measurement. We perform the optimization for both learning and cloning for arbitrary dimension of the Hilbert space. For 1 → 2 cloning we also propose a simple quantum network that realizes the optimal strategy.

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“…Since then a large number of alternative protocols of unconditionally secure QKD have been proposed [2,3,4,5] and various aspects of secure quantum communication beyond QKD have been explored [6,7,8,9,10,11,12,13]. For example, a large number of protocols have been proposed for quantum secure direct communication (QSDC) [7,8,14,15,16], deterministic secure quantum communication (DSQC) [9,10,17,18,19,20,21,22], quantum dialogue (QD) [23,24], etc. All these protocols differ from each other in some specific features.…”

Section: Introductionmentioning

confidence: 99%

An Integrated Hierarchical Dynamic Quantum Secret Sharing Protocol

et al. 2015

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Generalizing the notion of dynamic quantum secret sharing (DQSS), a simplified protocol for hierarchical dynamic quantum secret sharing (HDQSS) is proposed and it is shown that the protocol can be implemented using any existing protocol of quantum key distribution, quantum key agreement or secure direct quantum communication. The security of this proposed protocol against eavesdropping and collusion attacks is discussed with specific attention towards the issues related to the composability of the subprotocols that constitute the proposed protocol. The security and qubit efficiency of the proposed protocol is also compared with that of other existing protocols of DQSS. Further, it is shown that it is possible to design a semi-quantum protocol of HDQSS and in principle, the protocols of HDQSS can be implemented using any quantum state. It is also noted that the completely orthogonal-state-based realization of HDQSS protocol is possible and that HDQSS can be experimentally realized using a large number of alternative approaches.

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Secure Deterministic Communication without Entanglement

Cited by 422 publications

References 22 publications

General bounds for sender-receiver capacities in multipoint quantum communications

General bounds for sender-receiver capacities in multipoint quantum communications

Cloning of a quantum measurement

An Integrated Hierarchical Dynamic Quantum Secret Sharing Protocol

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