Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Krivitsky, L."'
Publikováno v:
Physical Review A 76, 053807 (2007)
We study the frequency-angular lineshape for a phase-matched nonlinear process producing entangled states and show that there is a continuous variety of maximally-entangled states generated for different mismatch values within the natural bandwidth.
Externí odkaz:
http://arxiv.org/abs/0706.0848
Autor:
Brida, G., Antonietti, N., Gramegna, M., Krivitsky, L., Piacentini, F., Rastello, M. L., Berchera, I. Ruo, Traina, P., Genovese, M.
Publikováno v:
International Journal of Quantum Information, Vol. 5, Nos. 1-2 (2007) 265-272
In this paper we present some recent work performed at "Carlo Novero" lab on Quantum Information and Foundations of Quantum Mechanics.
Comment: Contribution to III international workshop "Recent advances in Foundations of Quantum Mechanics and Q
Comment: Contribution to III international workshop "Recent advances in Foundations of Quantum Mechanics and Q
Externí odkaz:
http://arxiv.org/abs/0705.3203
Publikováno v:
Optics Express Vol.15, No.16, 10182-10188 (2007)
It is shown, theoretically and experimentally, that at any type-II spontaneous parametric down-conversion (SPDC) phase matching, the decoherence-free singlet Bell state is always present within the natural bandwidth and can be filtered out by a prope
Externí odkaz:
http://arxiv.org/abs/quant-ph/0702090
Publikováno v:
Journal of Physics A, 40 7985-7995 (2007)
Propagation of entangled photons in optical fiber is one of the fundamental issues for realizing quantum communication protocols. When entanglement in polarization is considered, arises the problem of compensating for the fiber effect on photons pola
Externí odkaz:
http://arxiv.org/abs/quant-ph/0610185
Publikováno v:
Phys. Rev. A 75, 015801 (2007)
We study the interference structure of the second-order intensity correlation function for polarization-entangled two-photon light obtained from type-II collinear frequency-degenerate spontaneous parametric down-conversion (SPDC). The structure is vi
Externí odkaz:
http://arxiv.org/abs/quant-ph/0607137
Publikováno v:
Phys. Rev. Lett. 96, 143601 (2006)
We present the first observation of two-photon polarization interference structure in the second-order Glauber's correlation function of two-photon light generated via type-II spontaneous parametric down-conversion. In order to obtain this result, tw
Externí odkaz:
http://arxiv.org/abs/quant-ph/0603247
Autor:
Genovese, M., Brida, G., Chekhova, M., Gramegna, M., Krivitsky, L., Kulik, S., Rastello, M. L.
Our last experimental results on the realization of a measurement-conditional unitary operation at single photon level are presented. This gate operates by rotating by $90^o$ the polarization of a photon produced by means of Type-II Parametric Down C
Externí odkaz:
http://arxiv.org/abs/quant-ph/0409055
Publikováno v:
Phys. Rev. A 70 (2004) 032332
A conditioned unitary transformation ($90^o$ polarization rotation) is performed at single-photon level. The transformation is realized by rotating polarization for one of the photons of a polarization-entangled biphoton state (signal photon) by mean
Externí odkaz:
http://arxiv.org/abs/quant-ph/0312211
Autor:
Bogdanov, Yu. I., Chekhova, M. V., Krivitsky, L. A., Kulik, S. P., Kwek, L. C., Oh, C. H., Penin, A. N., Tey, M. K., Zhukov, A. A.
Publikováno v:
Physical Review A 70, 042303 (2004)
We discuss a procedure of measurement followed by the reproduction of the quantum state of a three-level optical system - a frequency- and spatially degenerate two-photon field. The method of statistical estimation of the quantum state based on solvi
Externí odkaz:
http://arxiv.org/abs/quant-ph/0312054
Publikováno v:
Phys.Rev.A 70, 053801 (2004)
Orthogonality of two-photon polarization states belonging to a single frequency and spatial mode is demonstrated experimentally, in a generalization of the well-known anti-correlation 'dip' experiment.
Comment: Submitted to Phys.Rev.Lett
Comment: Submitted to Phys.Rev.Lett
Externí odkaz:
http://arxiv.org/abs/quant-ph/0311005