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Abstract:

We present the results of a linear optics photonic implementation of a quantum circuit that simulates a phase covariant cloner, using two different degrees of freedom of a single photon. We experimentally simulate the action of two mirrored 1 → 2 cloners, each of them biasing the cloned states into opposite regions of the Bloch sphere. We show that by applying a random sequence of these two cloners, an eavesdropper can mitigate the amount of noise added to the original input state and therefore, prepare clones with no bias, but with the same individual fidelity, masking its presence in a quantum key distribution protocol. Input polarization qubit states are cloned into path qubit states of the same photon, which is identified as a potential eavesdropper in a quantum key distribution protocol. The device has the flexibility to produce mirrored versions that optimally clone states on either the northern or southern hemispheres of the Bloch sphere, as well as to simulate optimal and non-optimal cloning machines by tuning the asymmetry on each of the cloning machines. © 2017, Springer-Verlag GmbH Germany, part of Springer Nature.

Registro:

Documento: Artículo
Título:Photonic quantum simulator for unbiased phase covariant cloning
Autor:Knoll, L.T.; López Grande, I.H.; Larotonda, M.A.
Filiación:DEILAP, CITEDEF-CONICET, J.B. de La Salle 4397, Villa Martelli, Buenos Aires, 1603, Argentina
Departamento de Física, FCEyN, UBA. Ciudad Universitaria, Buenos Aires, 1428, Argentina
CONICET, Buenos Aires, Argentina
Palabras clave:Cloning; Degrees of freedom (mechanics); Genetic engineering; Particle beams; Photons; Quantum computers; Quantum optics; Quantum theory; Cloning machine; Input polarization; Phase covariant cloner; Phase-covariant cloning; Quantum circuit; Quantum key distribution protocols; Quantum simulators; Southern Hemisphere; Quantum cryptography
Año:2018
Volumen:124
Número:1
DOI: http://dx.doi.org/10.1007/s00340-017-6871-z
Título revista:Applied Physics B: Lasers and Optics
Título revista abreviado:Appl Phys B
ISSN:09462171
CODEN:APBOE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09462171_v124_n1_p_Knoll

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Citas:

---------- APA ----------
Knoll, L.T., López Grande, I.H. & Larotonda, M.A. (2018) . Photonic quantum simulator for unbiased phase covariant cloning. Applied Physics B: Lasers and Optics, 124(1).
http://dx.doi.org/10.1007/s00340-017-6871-z
---------- CHICAGO ----------
Knoll, L.T., López Grande, I.H., Larotonda, M.A. "Photonic quantum simulator for unbiased phase covariant cloning" . Applied Physics B: Lasers and Optics 124, no. 1 (2018).
http://dx.doi.org/10.1007/s00340-017-6871-z
---------- MLA ----------
Knoll, L.T., López Grande, I.H., Larotonda, M.A. "Photonic quantum simulator for unbiased phase covariant cloning" . Applied Physics B: Lasers and Optics, vol. 124, no. 1, 2018.
http://dx.doi.org/10.1007/s00340-017-6871-z
---------- VANCOUVER ----------
Knoll, L.T., López Grande, I.H., Larotonda, M.A. Photonic quantum simulator for unbiased phase covariant cloning. Appl Phys B. 2018;124(1).
http://dx.doi.org/10.1007/s00340-017-6871-z