Fault-Tolerant Quantum Secure Direct Communication Protocol Based On Decoherence-Free States

Li, Yanbing; Song, Ting-Ting; Huang, Wei; Zhan, Wei

doi:10.1007/s10773-014-2251-1

Cited by 28 publications

(7 citation statements)

References 56 publications

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“…Thus, the sender should confirm whether the channel is secure before he encodes his message on the quantum states because the message cannot be discarded, unlike that in QKD protocols. Many QSDC protocols have been proposed, including the protocols without using entanglement 17 18 19 , the protocols using entanglement 20 21 22 23 24 25 26 27 and the two-way QSDC protocols 28 29 30 31 32 33 34 35 36 37 . The QSDC protocol can also be used in some special environments as first proposed by Boström et al .…”

mentioning

confidence: 99%

One Step Quantum Key Distribution Based on EPR Entanglement

et al. 2016

Sci Rep

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A novel quantum key distribution protocol is presented, based on entanglement and dense coding and allowing asymptotically secure key distribution. Considering the storage time limit of quantum bits, a grouping quantum key distribution protocol is proposed, which overcomes the vulnerability of first protocol and improves the maneuverability. Moreover, a security analysis is given and a simple type of eavesdropper’s attack would introduce at least an error rate of 46.875%. Compared with the “Ping-pong” protocol involving two steps, the proposed protocol does not need to store the qubit and only involves one step.

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confidence: 99%

One Step Quantum Key Distribution Based on EPR Entanglement

et al. 2016

Sci Rep

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“…Four-qubit decoherence-free state: To prevent quantum information in qubits from being affected by collective decoherence [26][27][28], logical qubits using decoherence-free subspaces [31][32][33][34][35][36][37][38][39][40][41][42] have been utilized.…”

Section: Optical Procedures Via Xknls For Single Logical Qubit Informamentioning

confidence: 99%

“…In particular, utilizing a decoherence-free subspace prevents collective decoherence [26][27][28] (identical decoherence occurring in each qubit in a system) to be spread from one subspace to another subspace in a system when uncontrolled interactions between a system and environment affect the schemes of quantum information processing. Applications (passive processes) [31][32][33][34][35][36][37][38][39][40][41][42] employing a decoherence-free subspace can provide immunity against collective decoherence [26][27][28]. For the passive process, a simple method is to encode quantum information onto two-qubit systems (as a singlet state [30]) or three-qubit systems (as an entangled W state [10,12,43,44], and a three-qubit decoherence-free state [32][33][34][35]45]).…”

Section: Introductionmentioning

confidence: 99%

Procedure via cross-Kerr nonlinearities for encoding single logical qubit information onto four-photon decoherence-free states

Heo

Choi

2021

Preprint

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We propose a photonic procedure using cross-Kerr nonlinearities (XKNLs) to encode single logical qubit information onto four-photon decoherence-free states. In quantum information processing, a decoherence-free subspace can secure quantum information against collective decoherence. Therefore, we design a procedure employing nonlinear optical gates, which are composed of XKNLs, quantum bus beams, and photon-number-resolving measurements with linear optical devices, to conserve quantum information by encoding quantum information onto four-photon decoherence-free states (single logical qubit information). Based on our analysis in quantifying the affection (photon loss and dephasing) of the decoherence effect, we demonstrate the experimental condition to acquire the reliable procedure of single logical qubit information having the robustness against the decoherence effect.

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“…A protocol is proposed which takes advantage of the physical security guarantee offered from the AlphaEta setup and builds on this using classical constructions. In Section 2 , we review the AlphaEta protocol and some definitions and results about all-or-nothing transforms (AONTs), a tool that has already proved to be useful in Li et al’s work [ 19 ]. To be able to work conveniently with individual bits when discussing security, we introduce the notion of a restricted AONT and present a way of constructing these type of transformations.…”

Section: Introductionmentioning

confidence: 99%

Integrating Classical Preprocessing into an Optical Encryption Scheme

Steinwandt

Corona

2019

Entropy

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Traditionally, cryptographic protocols rely on mathematical assumptions and results to establish security guarantees. Quantum cryptography has demonstrated how physical properties of a communication channel can be leveraged in the design of cryptographic protocols, too. Our starting point is the AlphaEta protocol, which was designed to exploit properties of coherent states of light to transmit data securely over an optical channel. AlphaEta aims to draw security from the uncertainty of any measurement of the transmitted coherent states due to intrinsic quantum noise. We present a technique to combine AlphaEta with classical preprocessing, taking into account error-correction for the optical channel. This enables us to establish strong provable security guarantees. In addition, the type of hybrid encryption we suggest, enables trade-offs between invoking a(n inexpensive) classical communication channel and a (more complex to implement) optical channel, without jeopardizing security. Our design can easily incorporate fast state-of-the-art authenticated encryption, but in this case the security analysis requires heuristic reasoning.

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Fault-Tolerant Quantum Secure Direct Communication Protocol Based On Decoherence-Free States

Cited by 28 publications

References 56 publications

One Step Quantum Key Distribution Based on EPR Entanglement

One Step Quantum Key Distribution Based on EPR Entanglement

Procedure via cross-Kerr nonlinearities for encoding single logical qubit information onto four-photon decoherence-free states

Integrating Classical Preprocessing into an Optical Encryption Scheme

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