Invention Grant
- Patent Title: Two non-orthogonal states quantum cryptography method and apparatus with inter-and inter-qubit interference for eavesdropper detection
- Patent Title (中): 两种非正交状态量子密码法和装置，用于窃听者检测中间和量子间的干扰
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Application No.: US11574454Application Date: 2005-09-01
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Publication No.: US07929690B2Publication Date: 2011-04-19
- Inventor: Nicolas Gisin , Grégoire Ribordy , Hugo Zbinden
- Applicant: Nicolas Gisin , Grégoire Ribordy , Hugo Zbinden
- Applicant Address: CH Carouge
- Assignee: ID Quantique SA
- Current Assignee: ID Quantique SA
- Current Assignee Address: CH Carouge
- Agency: Moetteli & Associés SàRL
- International Application: PCT/IB2005/002622 WO 20050901
- International Announcement: WO2006/024939 WO 20060309
- Main IPC: H04K1/00
- IPC: H04K1/00
Abstract:
An apparatus and method for implementing a secure quantum cryptography system using two non-orthogonal states. For each qubit, the to emitter station prepares a quantum system in one of two non-orthogonal quantum states in the time-basis to code bit values. Intra- and inter-qubit interference is then used to reveal eavesdropping attempts. Witness states are used to help reveal attacks performed across the quantum system separation.
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