dorsal/arxiv
View SchemaQuantum secret sharing based on modulated high-dimensional time-bin entanglement
| Authors | Hiroki Takesue, Kyo Inoue |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0606192 |
| URL | https://arxiv.org/abs/quant-ph/0606192 |
| DOI | 10.1103/PhysRevA.74.012315 |
| Journal | Phys. Rev. A 74, 012315 (2006). |
Abstract
We propose a new scheme for quantum secret sharing (QSS) that uses a modulated high-dimensional time-bin entanglement. By modulating the relative phase randomly by {0,pi}, a sender with the entanglement source can randomly change the sign of the correlation of the measurement outcomes obtained by two distant recipients. The two recipients must cooperate if they are to obtain the sign of the correlation, which is used as a secret key. We show that our scheme is secure against intercept-and-resend (I-R) and beam splitting attacks by an outside eavesdropper thanks to the non-orthogonality of high-dimensional time-bin entangled states. We also show that a cheating attempt based on an I-R attack by one of the recipients can be detected by changing the dimension of the time bin entanglement randomly and inserting two "vacant" slots between the packets. Then, cheating attempts can be detected by monitoring the count rate in the vacant slots. The proposed scheme has better experimental feasibility than previously proposed entanglement-based QSS schemes.
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"abstract": "We propose a new scheme for quantum secret sharing (QSS) that uses a\nmodulated high-dimensional time-bin entanglement. By modulating the relative\nphase randomly by {0,pi}, a sender with the entanglement source can randomly\nchange the sign of the correlation of the measurement outcomes obtained by two\ndistant recipients. The two recipients must cooperate if they are to obtain the\nsign of the correlation, which is used as a secret key. We show that our scheme\nis secure against intercept-and-resend (I-R) and beam splitting attacks by an\noutside eavesdropper thanks to the non-orthogonality of high-dimensional\ntime-bin entangled states. We also show that a cheating attempt based on an I-R\nattack by one of the recipients can be detected by changing the dimension of\nthe time bin entanglement randomly and inserting two \"vacant\" slots between the\npackets. Then, cheating attempts can be detected by monitoring the count rate\nin the vacant slots. The proposed scheme has better experimental feasibility\nthan previously proposed entanglement-based QSS schemes.",
"arxiv_id": "quant-ph/0606192",
"authors": [
"Hiroki Takesue",
"Kyo Inoue"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.74.012315",
"journal_ref": "Phys. Rev. A 74, 012315 (2006).",
"title": "Quantum secret sharing based on modulated high-dimensional time-bin entanglement",
"url": "https://arxiv.org/abs/quant-ph/0606192"
},
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