Hierarchical Quantum Network using Hybrid Entanglement

Shukla, Chitra; Malpani, Priya; Thapliyal, Kishore

doi:10.1007/s11128-021-03057-5

Cited by 8 publications

(2 citation statements)

References 63 publications

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“…In addition to QKD, many other communication protocols such as quantum secret sharing (QSS), quantum secure direct communication (QSDC), quantum key agreement, etc. have also been advanced [3,[16][17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…For example, all the nodes of a network may not have equal preference; one node might belong to more than one layer, or, there may be a need for collaboration among different nodes for retrieval of information. This constitutes a rich area of research [19,[34][35][36][37]. In fact, both QKD and QSS protocols to distribute secret information in a network have been proposed by employing layered entangled states [38,39].…”

Section: Introductionmentioning

confidence: 99%

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Layered semiquantum secure communication protocols

Bala¹,

Asthana²,

Ravishankar³

2022

Preprint

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In this paper, we harness the potential offered by multidimensional states in secure communication with only one quantum participant. We propose four protocols for-(i) layered semi-quantum key distribution (LSQKD), (ii) layered semi-quantum secret sharing (LSQSS), (iii) integrated layered semi-quantum key distribution and secret sharing (ILSQKD+SS), and, (iv) integrated layered semi-quantum secure direct communication and key distribution (ILSQSDC+KD) to share secret information in an arbitrary layered network. All the four protocols allow for simultaneous distribution of secure information in all the layers of a network, thanks to multidimensional states.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Layered semiquantum secure communication protocols

Bala¹,

Asthana²,

Ravishankar³

2022

Preprint

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Entanglement Concentration Protocols for GHZ-type Entangled Coherent State Based on Linear Optics

Sisodia

Shukla

2021

Int J Theor Phys

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We proposed two entanglement concentration protocols (ECPs) to obtain maximally entangled Greenberger-Horne-Zeilinger (GHZ)-type entangled coherent state (ECS) from the corresponding partially entangled GHZ-type ECSs. We obtained the first ECP using a partially entangled GHZ-type ECS assisted with a superposition of single-mode coherent state, however the second ECP is designed using two copies of partially entangled GHZ-type ECSs. The success probabilities have also been calculated and discussed for both the ECPs. We have further compared the success probabilities of our first ECP for 3-mode GHZ-type ECS with an ECP of 3-mode W-type ECS and found that our ECP is more efficient (maximal success probabilities) for larger value (β = 0.7) of state parameter. For the physical realization, two optical circuits (for two ECPs) using linear optical elements, viz 50:50 beam splitter, phase shifter, and photon detectors are provided, which support the future experimental implementation possible with the present technology.

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