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Quantum State Transfer Between Any Pair of Qubits in a Quantum Network via Optical Fibers

Li-Hua Lin

International Journal of Theoretical PhysicsOct 18, 20131 citation

Quantum information transfer between two-component Bose-Einstein condensates connected by optical fiber

Alexey N. Pyrkov, Tim Byrnes

Two component Bose-Einstein condensates (BECs) have been recently shown to be viable systems for storing and manipulating quantum information. Unlike standard single-system qubits, the quantum information is duplicated in a large number of identical bosonic particles, thus can be considered to be a “macroscopic” qubit. One of the difficulties with such a system is how to effectively interact such qubits together in order to transfer quantum information and create entanglement. Here we discuss quantum state transfer using cavities containing two-component BECs coupled by optic fiber with a goal to apply this technique for quantum networking with BECs.Two component Bose-Einstein condensates (BECs) have been recently shown to be viable systems for storing and manipulating quantum information. Unlike standard single-system qubits, the quantum information is duplicated in a large number of identical bosonic particles, thus can be considered to be a “macroscopic” qubit. One of the difficulties with such a system is how to effectively interact such qubits together in order to transfer quantum information and create entanglement. Here we discuss quantum state transfer using cavities containing two-component BECs coupled by optic fiber with a goal to apply this technique for quantum networking with BECs.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIEJan 3, 201313 citations

Digital implementation of a two-way coherent phase transfer over optical fiber for remote clocks comparisons

Claudio Eligio Calosso, Elio K. Bertacco, Davide Calonico +7 more

We performed a two-way remote optical phase comparison on optical fiber. Two optical frequency signals were launched in opposite directions in an optical fiber and their phases were simultaneously measured at the other end. In this technique, the fiber noise is passively cancelled, and we compared two optical frequencies at the ultimate 10−21 stability level. The experiment was performed on a 47km fiber that is part of the metropolitan network for Internet traffic. The technique relies on the synchronous measurement of the optical phases at the two ends of the link, that is here performed by digital electronics. This scheme offers some advantages with respect to active noise cancellation schemes, as the light travels only once in the fiber.We performed a two-way remote optical phase comparison on optical fiber. Two optical frequency signals were launched in opposite directions in an optical fiber and their phases were simultaneously measured at the other end. In this technique, the fiber noise is passively cancelled, and we compared two optical frequencies at the ultimate 10−21 stability level. The experiment was performed on a 47km fiber that is part of the metropolitan network for Internet traffic. The technique relies on the synchronous measurement of the optical phases at the two ends of the link, that is here performed by digital electronics. This scheme offers some advantages with respect to active noise cancellation schemes, as the light travels only once in the fiber.

European Frequency and Time ForumJun 1, 20140 citations

Fiber Optics Protocols for Quantum Communication

Serge Massar

Quantum Information ProcessingAug 31, 20062 citations

Frequency transfer via a two-way optical phase comparison on a multiplexed fiber network

C. E. Calosso, E. Bertacco, Davide Calonico +6 more

We performed a two-way remote optical phase comparison on optical fiber. Two optical frequency signals were launched in opposite directions in an optical fiber and their phases were simultaneously measured at the other end. In this technique, the fiber noise is passively canceled, and we compared two optical frequencies at the ultimate 10(-21) stability level. The experiment was performed on a 47 km fiber that is part of the metropolitan network for Internet traffic. The technique relies on the synchronous measurement of the optical phases at the two ends of the link, which is here performed by digital electronics. This scheme offers some advantages with respect to active noise cancellation schemes, as the light travels only once in the fiber.We performed a two-way remote optical phase comparison on optical fiber. Two optical frequency signals were launched in opposite directions in an optical fiber and their phases were simultaneously measured at the other end. In this technique, the fiber noise is passively canceled, and we compared two optical frequencies at the ultimate 10(-21) stability level. The experiment was performed on a 47 km fiber that is part of the metropolitan network for Internet traffic. The technique relies on the synchronous measurement of the optical phases at the two ends of the link, which is here performed by digital electronics. This scheme offers some advantages with respect to active noise cancellation schemes, as the light travels only once in the fiber.

arXiv:1308.2377Optics LettersFeb 19, 201485 citations

Effective fiber-coupling of entangled photons for quantum communication

Fabio Antonio Bovino, Pietro Varisco, A.M. Colla +3 more

arXiv:quant-ph/0303126Optics CommunicationsOct 11, 2003110 citations

Comparison between direct and optical fiber coupling for two qubits quantum state transfer

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