dorsal/arxiv
View SchemaRobust Quantum Communication Using A Polarization-Entangled Photon Pair
| Authors | J. -C. Boileau, R. Laflamme, M. Laforest, C. R. Myers |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0406118 |
| URL | https://arxiv.org/abs/quant-ph/0406118 |
| DOI | 10.1103/PhysRevLett.93.220501 |
| Journal | Phys. Rev. Lett. 93, 220501 (2004) |
Abstract
Noise and imperfection of realistic devices are major obstacles for implementing quantum cryptography. In particular birefringence in optical fibers leads to decoherence of qubits encoded in polarization of photon. We show how to overcome this problem by doing single qubit quantum communication without a shared spatial reference frame and precise timing. Quantum information will be encoded in pair of photons using ``tag'' operations which corresponds to the time delay of one of the polarization modes. This method is robust against the phase instability of the interferometers despite the use of time-bins. Moreover synchronized clocks are not required in the ideal situation no photon loss case as they are only necessary to label the different encoded qubits.
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"abstract": "Noise and imperfection of realistic devices are major obstacles for\nimplementing quantum cryptography. In particular birefringence in optical\nfibers leads to decoherence of qubits encoded in polarization of photon. We\nshow how to overcome this problem by doing single qubit quantum communication\nwithout a shared spatial reference frame and precise timing. Quantum\ninformation will be encoded in pair of photons using ``tag\u0027\u0027 operations which\ncorresponds to the time delay of one of the polarization modes. This method is\nrobust against the phase instability of the interferometers despite the use of\ntime-bins. Moreover synchronized clocks are not required in the ideal situation\nno photon loss case as they are only necessary to label the different encoded\nqubits.",
"arxiv_id": "quant-ph/0406118",
"authors": [
"J. -C. Boileau",
"R. Laflamme",
"M. Laforest",
"C. R. Myers"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.93.220501",
"journal_ref": "Phys. Rev. Lett. 93, 220501 (2004)",
"title": "Robust Quantum Communication Using A Polarization-Entangled Photon Pair",
"url": "https://arxiv.org/abs/quant-ph/0406118"
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