5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR339 papers
- European Southern ObservatoryCL298 papers
- Center for Astrophysics Harvard & SmithsonianUS294 papers
- University of CambridgeGB274 papers
- Osservatorio Astronomico di PadovaIT271 papers
- University of WarwickGB256 papers
- Stockholm UniversitySE237 papers
- Max Planck Institute for AstrophysicsDE213 papers
- Las Cumbres Observatory Global Telescope NetworkUS211 papers
- AlbaNovaSE210 papers
- Space Telescope Science InstituteUS208 papers
- University of St AndrewsGB193 papers
22 papers · 1 filter
Gyroscopic motion of superfluid trapped atomic condensates
Halvor Moll Nilsen, Dermot McPeake, J F McCann
The gyroscopic motion of a trapped Bose gas containing a vortex is studied. We model the system as a classical top, as a superposition of coherent hydrodynamic states, by solution…
Role of many-body entanglement in decoherence processes
Helen McAneney, Jinhyoung Lee, M. S. Kim
A pure state decoheres into a mixed state as it entangles with an environment. When an entangled two-mode system is embedded in a thermal environment, however, each mode may not be…
Quantum nonlocality test for continuous-variable states with dichotomic observables
H. Jeong, W. Son, M. S. Kim +2
There have been theoretical and experimental studies on quantum nonlocality for continuous variables, based on dichotomic observables. In particular, we are interested in two cases…
WeBo 1: A Young Barium Star Surrounded by a Ring-Like Planetary Nebula
Howard E. Bond, Don L. Pollacco, Ronald F. Webbink
WeBo 1 (PN G135.6+01.0), a previously unrecognized planetary nebula with a remarkable thin-ring morphology, was discovered serendipitously on Digitized Sky Survey images. The centr…
On Why Disks Generate Magnetic Towers and Collimate Jets
D Lynden-Bell
We show that accretion disks with magnetic fields in them ought to make jets provided that their electrical conductivity prevents slippage and there is an ambient pressure in their…
Correspondence between continuous variable and discrete quantum systems of arbitrary dimensions
Caslav Brukner, Myungshik S. Kim, Jian-Wei Pan +1
We establish a mapping between a continuous variable (CV) quantum system and a discrete quantum system of arbitrary dimension. This opens up the general possibility to perform any…
Entanglement of a two-mode squeezed state in a Gaussian environment
D. Wilson, J. Lee, M. S. Kim
Some non-classical properties such as squeezing, sub-Poissonian photon statistics or oscillations in photon-number distributions may survive longer in a phase-sensitive environment…
Optical control of photon tunneling through an array of nanometer scale cylindrical channels
I. I. Smolyaninov, A. V. Zayats, A. Stanishevsky +1
We report first observation of photon tunneling gated by light at a different wavelength in an artificially created array of nanometer scale cylindrical channels in a thick gold fi…
Chemical composition of B-type supergiants in the OB8, OB10, OB48, OB78 associations of M31
C. Trundle, P. L. Dufton, D. J. Lennon +2
Absolute and differential chemical abundances are presented for the largest group of massive stars in M31 studied to date. These results were derived from intermediate resolution s…
Generation of entangled coherent states via cross phase modulation in a double electromagnetically induced transparency regime
M. Paternostro, M. S. Kim, B. S. Ham
The generation of an entangled coherent state is one of the most important ingredients of quantum information processing using coherent states. Recently, numerous schemes to achiev…
Non-Local Quantum Gates: a Cavity-Quantum-Electro-Dynamics implementation
M. Paternostro, M. S. Kim, G. M. Palma
The problems related to the management of large quantum registers could be handled in the context of distributed quantum computation: unitary non-local transformations among spatia…
More nitrogen rich B-type stars in the SMC cluster, NGC 330
D. J. Lennon, P. L. Dufton, C. Crowley
High resolution spectra of seven early B-type giant/supergiant stars in the SMC cluster NGC330 are analysed to obtain their chemical compositions relative to SMC field and Galactic…
Invariant ideals of twisted crossed products
Chi-Wai Leung, Chi-Keung Ng
We prove a result concerning the inclusion of non-trivial invariant ideals inside non-trivial ideals of a twisted crossed product. We will also give results concerning the primenes…
The evolutionary status of Sher25 - implications for blue supergiants and the progenitor of SN1987A
S. J. Smartt, D. J. Lennon, R. P. Kudritzki +3
The blue supergiant Sher25 in the massive Galactic cluster NGC3603 is surrounded by a striking emission line nebula. The nebula contains an equatorial ring and probable bi-polar ou…
Experimentally realizable characterizations of continuous variable Gaussian states
M. S. Kim, Jinhyoung Lee, W. J. Munro
Measures of entanglement, fidelity and purity are basic yardsticks in quantum information processing. We propose how to implement these measures using linear devices and homodyne d…
Duality of Hopf -algebras
Chi-Keung Ng
In this paper, we study the duality theory of Hopf -algebras in a general ``Hilbert-space-free'' framework. Our particular interests are the ``full duality'' and the ``reduced…
Ferroelectricity and isotope effects in hydrogen-bonded KDP crystals
S. Koval, J. Kohanoff, R. L. Migoni +1
Based on an accurate first principles description of the energetics in H-bonded KDP, we conduct a first study of nuclear quantum effects and of the changes brought about by deutera…
Light controlled photon tunneling
I. I. Smolyaninov, A. V. Zayats, C. C. Davis
Recent measurements of photon tunneling through individual subwavelength pinholes in a gold film covered with a layer of polydiacetylene (Phys. Rev. Letters 88, 187402 (2002)) prov…
Optical spectroscopy of the M15 intermediate velocity cloud
J. V. Smoker, F. P. Keenan, N. Lehner +1
We present echelle spectrograph observations in NaD, at resolutions of 6.2-8.5 km/s, for 11 stars located in the line-of-sight to the M15 intermediate velocity cloud, which has a r…
What are the Hot R Coronae Borealis Stars?
Orsola De Marco, Geoffrey C. Clayton, F. Herwig +3
We investigate the evolutionary status of four stars: V348 Sgr, DY Cen and MV Sgr in the Galaxy and HV 2671 in the LMC. These stars have in common random deep declines in visual br…
The Local Group Census: planetary nebulae in Sextans B
L. Magrini, R. L. M. Corradi, N. A. Walton +6
Five planetary nebulae (PNe) have been discovered in the nearby dwarf irregular galaxy. Emission line images were obtained using the Wide Field Camera of the 2.5m Isaac Newton Tele…
Multipartite entanglement for entanglement teleportation
Jinhyoung Lee, Hyegeun Min, Sung Dahm Oh
The scheme for entanglement teleportation is proposed to incorporate multipartite entanglement of four qubits as a quantum channel. Based on the invariance of entanglement teleport…