dorsal/arxiv
View SchemaAn Attack to Quantum Cryptography from Space
| Authors | Igor V. Volovich |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0012054 |
| URL | https://arxiv.org/abs/quant-ph/0012054 |
Abstract
The promise of secure cryptographic quantum key distribution schemes is based on the use of quantum effects in the spin space. We point out that in fact in many current quantum cryptography protocols the space part of the wave function is neglected. However exactly the space part of the wave function describes the behaviour of particles in ordinary real three-dimensional space. As a result such schemes can be secure against eavesdropping attacks in the abstract spin space but could be insecure in the real three-dimensional space. We discuss an approach to the security of quantum key distribution in space by using Bell's inequality and a special preparation of the space part of the wave function.
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"abstract": "The promise of secure cryptographic quantum key distribution schemes is based\non the use of quantum effects in the spin space. We point out that in fact in\nmany current quantum cryptography protocols the space part of the wave function\nis neglected. However exactly the space part of the wave function describes the\nbehaviour of particles in ordinary real three-dimensional space. As a result\nsuch schemes can be secure against eavesdropping attacks in the abstract spin\nspace but could be insecure in the real three-dimensional space. We discuss an\napproach to the security of quantum key distribution in space by using Bell\u0027s\ninequality and a special preparation of the space part of the wave function.",
"arxiv_id": "quant-ph/0012054",
"authors": [
"Igor V. Volovich"
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"title": "An Attack to Quantum Cryptography from Space",
"url": "https://arxiv.org/abs/quant-ph/0012054"
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