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Showing 1 to 12 of 126 entries
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Decoherence-free subspaces in quantum key distribution.

Physical review letters

Walton ZD, Abouraddy AF, Sergienko AV, Saleh BE, Teich MC.
PMID: 14525278
Phys Rev Lett. 2003 Aug 22;91(8):087901. doi: 10.1103/PhysRevLett.91.087901. Epub 2003 Aug 20.

We demonstrate that two recent innovations in the field of practical quantum key distribution (one-way autocompensation and passive detection) are closely related to the methods developed to protect quantum computations from decoherence. We present a new scheme that combines...

Diffracted-ray approach to the fast evaluation of diffractive lenses.

Applied optics

Sergienko N, Stamnes JJ.
PMID: 18345168
Appl Opt. 2000 Jun 01;39(16):2539-44. doi: 10.1364/ao.39.002539.

We employ a combination of asymptotic methods to speed up the computation of fields in the focal region of a diffractive lens (DL). The DL is treated locally as a linear grating with a slowly varying period and groove...

Ferroelectricity in the magnetic E-phase of orthorhombic perovskites.

Physical review letters

Sergienko IA, Sen C, Dagotto E.
PMID: 17155837
Phys Rev Lett. 2006 Dec 01;97(22):227204. doi: 10.1103/PhysRevLett.97.227204. Epub 2006 Nov 30.

We show that the symmetry of the spin zigzag chain E phase of the orthorhombic perovskite manganites and nickelates allows for the existence of a finite ferroelectric polarization. The proposed microscopic mechanism is independent of spin-orbit coupling. We predict...

Photon-counting optical coherence-domain reflectometry using superconducting single-photon detectors.

Optics express

Mohan N, Minaeva O, Gol'tsman GN, Nasr MB, Saleh BE, Sergienko AV, Teich MC.
PMID: 18958090
Opt Express. 2008 Oct 27;16(22):18118-30. doi: 10.1364/oe.16.018118.

We consider the use of single-photon counting detectors in coherence-domain imaging. Detectors operated in this mode exhibit reduced noise, which leads to increased sensitivity for weak light sources and weakly reflecting samples. In particular, we experimentally demonstrate the possibility...

Ellipsometric measurements by use of photon pairs generated by spontaneous parametric downconversion.

Optics letters

Abouraddy AF, Toussaint KC, Sergienko AV, Saleh BE, Teich MC.
PMID: 18049710
Opt Lett. 2001 Nov 01;26(21):1717-9. doi: 10.1364/ol.26.001717.

We present a novel interferometric technique for performing ellipsometric measurements. This technique relies on the use of a nonclassical optical source, namely, polarization-entangled twin photons generated by spontaneous parametric downconversion from a nonlinear crystal, in conjunction with a coincidence-detection...

Non-collinear and non-degenerate polarization-entangled photon generation via concurrent type-I parametric downconversion in PPLN.

Optics express

Guillet de Chatellus H, Sergienko AV, Saleh BE, Teich MC, Di Giuseppe G.
PMID: 19529400
Opt Express. 2006 Oct 16;14(21):10060-72. doi: 10.1364/oe.14.010060.

A periodically poled lithium niobate (PPLN) crystal has been used as an efficient source of non-collinearly generated polarization-entangled photon pairs at 810 and 1550 nm. The PPLN crystal was endowed with a specially designed poling pattern and the entangled...

Dual nature of improper ferroelectricity in a magnetoelectric multiferroic.

Physical review letters

Picozzi S, Yamauchi K, Sanyal B, Sergienko IA, Dagotto E.
PMID: 18233318
Phys Rev Lett. 2007 Nov 30;99(22):227201. doi: 10.1103/PhysRevLett.99.227201. Epub 2007 Nov 26.

Using first-principles calculations, we study the microscopic origin of ferroelectricity (FE) induced by magnetic order in the orthorhombic HoMnO3. We obtain the largest ferroelectric polarization observed in the whole class of improper magnetic ferroelectrics to date. We find that...

Dispersion-cancelled and dispersion-sensitive quantum optical coherence tomography.

Optics express

Nasr M, Saleh B, Sergienko A, Teich M.
PMID: 19474956
Opt Express. 2004 Apr 05;12(7):1353-62. doi: 10.1364/opex.12.001353.

Quantum optical coherence tomography (QOCT) makes use of an entangled twin-photon light source to carry out axial optical sectioning. We have probed the longitudinal structure of a sample comprising multiple surfaces in a dispersion-cancelled manner while simultaneously measuring the...

JET divertor diagnostic upgrade for neutral gas analysis.

The Review of scientific instruments

Kruezi U, Sergienko G, Morgan PD, Matthews GF, Brezinsek S, Vartanian S.
PMID: 23130797
Rev Sci Instrum. 2012 Oct;83(10):10D728. doi: 10.1063/1.4732175.

With installation of the ITER-like wall in JET a major diagnostic upgrade to measure the neutral gas pressure and composition in the sub-divertor region has been completed, to characterise retention and outgassing of the new metallic first wall. The...

Can Two-Photon Interference be Considered the Interference of Two Photons?.

Physical review letters

Migdall A, Pittman TB, Rubin MH, Sergienko AV, Shih YH, Strekalov DV.
PMID: 10061812
Phys Rev Lett. 1996 Sep 02;77(10):1917-1920. doi: 10.1103/PhysRevLett.77.1917.

No abstract available.

New high-intensity source of polarization-entangled photon pairs.

Physical review letters

Kwiat PG, Mattle K, Sergienko AV, Shih Y, Weinfurter H, Zeilinger A.
PMID: 10059884
Phys Rev Lett. 1995 Dec 11;75(24):4337-4341. doi: 10.1103/PhysRevLett.75.4337.

No abstract available.

Observation of two-photon "ghost" interference and diffraction.

Physical review letters

Klyshko DN, Sergienko AV, Shih YH, Strekalov DV.
PMID: 10058246
Phys Rev Lett. 1995 May 01;74(18):3600-3603. doi: 10.1103/PhysRevLett.74.3600.

No abstract available.

Showing 1 to 12 of 126 entries