Quantum Physics

Photon Correlation versus Interference of Single-Atom Fluorescence in a Half-Cavity

Francois Dubin, Daniel Rotter, Manas Mukherjee, Carlos Russo, Jurgen Eschner et al.
Photon correlations are investigated for a single laser-excited ion trapped in front of a mirror. Varying the relative distance between the ion and the mirror, photon correlation statistics can be tuned smoothly from an antibunching minimum to a bunchinglike maximum. Our analysis concerns the non-Ma ... [Phys. Rev. Lett. 98, 183003 (2007)] published Thu May 3, 2007.

High-temperature superconducting quantum interference device with cooled LC resonant circuit for measuring alternating magnetic fields with improved signal-to-noise ratio

Longqing Qiu, Yi Zhang, Hans-Joachim Krause, Alex I. Braginski, and Alexander Usoskin
Certain applications of superconducting quantum interference devices (SQUIDs) require a magnetic field measurement only in a very narrow frequency range. In order to selectively improve the alternating-current (ac) magnetic field sensitivity of a high-temperature superconductor SQUID for a distinct ... [Rev. Sci. Instrum. 78, 054701 (2007)] published Wed May 2, 2007.

Singularity of the dyadic Green's function for heterogeneous dielectrics

Charles-Antoine Guerin, Boris Gralak, and Adriaan Tip
For heterogeneous media with piecewise constant complex permittivity on regular domains, we show that the dyadic Green's function has the same singular part as the corresponding free space dyadic Green's function on every domain of constant permittivity. We give two important applications of this pr ... [Phys. Rev. E 75, 056601 (2007)] published Wed May 2, 2007.

Preparation and determination of spin-polarized states in multi-Zeeman-sublevel atoms

Bo Wang, Yanxu Han, Jintao Xiao, Xudong Yang, Chunhong Zhang et al.
We demonstrate a simple, all-optical technique to prepare and determine the desired internal quantum states in multi-Zeeman-sublevel atoms. By choosing appropriate coupling and pumping laser beams, atoms can be easily prepared in a desired Zeeman sublevel with high purity or in any chosen ground-sta ... [Phys. Rev. A 75, 051801 (2007)] published Wed May 2, 2007.

Modified Coulomb Law in a Strongly Magnetized Vacuum

Anatoly E. Shabad and Vladimir V. Usov
We study the electric potential of a charge placed in a strong magnetic field B>>B[sub 0]~=4.4 x 10[sup 13] G, as modified by the vacuum polarization. In such a field the electron Larmour radius is much less than its Compton length. At the Larmour distances a scaling law occurs, with the potential ... [Phys. Rev. Lett. 98, 180403 (2007)] published Wed May 2, 2007.

f[sub K]/f[sub pi] in full QCD with domain wall valence quarks

S. R. Beane, P. F. Bedaque, K. Orginos, and M. J. Savage NPLQCD Collaboration
We compute the ratio of pseudoscalar decay constants f[sub K]/f[sub pi] using domain-wall valence quarks and rooted improved Kogut-Susskind sea quarks, at a lattice spacing of b~0.125 fm. By employing continuum chiral perturbation theory, we extract the Gasser-Leutwyler low-energy constant L[sub 5] ... [Phys. Rev. D 75, 094501 (2007)] published Wed May 2, 2007.

Generalized parton distributions from hadronic observables: Zero skewness

Saeed Ahmad, Heli Honkanen, Simonetta Liuti, and Swadhin K. Taneja
We propose a physically motivated parametrization for the unpolarized generalized parton distributions. At zero value of the skewness variable, zeta, the parametrization is constrained by simultaneously fitting the experimental data on both the nucleon elastic form factors and the deep inelastic str ... [Phys. Rev. D 75, 094003 (2007)] published Wed May 2, 2007.

Quantum Chaos in Billiards

Arnd Backer
An important class of systems--billiards--can show a wide variety of dynamical behavior. Using tools developed in Python, researchers can interactively study the complexity of these dynamics. Such behavior is directly reflected in properties of the corresponding quantum systems, such as eigenvalue s ... [Comput. Sci. Eng. 9, 60 (2007)] published Tue May 1, 2007.

Disordered free fermions and the Cardy-Ostlund fixed line at low temperature

Pierre Le Doussal and Gregory Schehr
Using a functional renormalization group (RG) method, we reexamine the glass phase of the two-dimensional random-field sine Gordon model. It is described by a line of fixed points with a super-roughening amplitude [overline [u(0) - u(r)][sup 2]]~A(T)ln[sup 2]r as temperature T is varied. By speculat ... [Phys. Rev. B 75, 184401 (2007)] published Tue May 1, 2007.

Two-photon absorption based optical limiting and stabilization by using a CdTe quantum dot solution excited at optical communication wavelength of ~ 1300 nm

Guang S. He, Qingdong Zheng, Ken-Tye Yong, Aleksandr I. Ryasnyanskiy, Paras N. Prasad et al.
This letter presents the results of two-photon study of CdTe quantum dots (QDs) in chloroform. The measured two-photon absorption (2PA) spectrum shows that 2PA coefficient at ~1300 nm is ~0.02 cm/GW. Based on a 1 cm path-length CdTe QD solution sample of 8 mg/ml concentration, irradiated by a fo ... [Appl. Phys. Lett. 90, 181108 (2007)] published Tue May 1, 2007.

A Photonic Crystal Localizes Light in Two Dimensions

Mark Wilson
[bold In 1958] Philip Anderson predicted that when a crystal is disordered enoughfilled with a high concentration of defects, sayelectron diffusion will cease.[sup 1] the phenomenon, called Anderson localization, explains the phase transition in a material that changes from a conductor to an insulat ... [Phys. Today 60, 22 (2007)] published Tue May 1, 2007.

Correction

... [Phys. Today 60, 16 (2007)] published Tue May 1, 2007.

Recoil-Proton Polarization in High-Energy Deuteron Photodisintegration with Circularly Polarized Photons

X. Jiang, J. Arrington, F. Benmokhtar, A. Camsonne, J. P. Chen et al. Jefferson Lab Hall A Collaboration
We measured the angular dependence of the three recoil-proton polarization components in two-body photodisintegration of the deuteron at a photon energy of 2 GeV. These new data provide a benchmark for calculations based on quantum chromodynamics. Two of the five existing models have made prediction ... [Phys. Rev. Lett. 98, 182302 (2007)] published Tue May 1, 2007.

Azimuthal and single-spin asymmetry in deep-inelastic lepton-nucleon scattering

Zuo-tang Liang and Xin-Nian Wang
We derive a general framework for describing semi-inclusive deep-inelastic lepton-nucleon scattering in terms of the unintegrated parton distributions and other higher-twist parton correlations. Such a framework provides a consistent approach to the calculation of inclusive and semi-inclusive cross ... [Phys. Rev. D 75, 094002 (2007)] published Tue May 1, 2007.

Thermal quantum electrodynamics of nonrelativistic charged fluids

Pascal R. Buenzli, Philippe A. Martin, and Marc D. Ryser
The theory relevant to the study of matter in equilibrium with the radiation field is thermal quantum electrodynamics (TQED). We present a formulation of the theory, suitable for nonrelativistic fluids, based on a joint functional integral representation of matter and field variables. In this formal ... [Phys. Rev. E 75, 041125 (2007)] published Mon Apr 30, 2007.

Entanglement detection for electrons via witness operators

Lara Faoro and Fabio Taddei
We discuss an implementation of the entanglement witness, a method to detect entanglement with few local measurements, in systems where entangled electrons are generated both in the spin and orbital degrees of freedom. We address the efficiency of this method in various setups, including two differe ... [Phys. Rev. B 75, 165327 (2007)] published Mon Apr 30, 2007.

Electron in a tangled chain: Multifractality at the small-world critical point

J. Quintanilla and V. L. Campo
We study a simple model of conducting polymers in which a single electron propagates through a randomly tangled chain. The model has the geometry of a small-world network, with a small density p of crossings of the chain acting as shortcuts for the electron. We use numerical diagonalization and simp ... [Phys. Rev. B 75, 144204 (2007)] published Mon Apr 30, 2007.

Genuine tripartite entanglement in the noninteracting Fermi gas

T. Vertesi
We study genuine tripartite entanglement shared among the spins of three localized fermions in the noninteracting Fermi gas at zero temperature. First, we prove analytically with the aid of entanglement witnesses that in a particular configuration the three fermions are genuinely tripartite entangle ... [Phys. Rev. A 75, 042330 (2007)] published Mon Apr 30, 2007.

Scaling of the von Neumann entropy in a two-electron system near the ionization threshold

Omar Osenda and Pablo Serra
The critical behavior of entanglement near a quantum phase transition has been studied intensely over the past few years. Few-body quantum systems show critical behavior near the ionization point. We investigate the scaling properties of the von Neumann entropy for an atomiclike system near the ioni ... [Phys. Rev. A 75, 042331 (2007)] published Mon Apr 30, 2007.

Variational approach for the quantum Zakharov system

F. Haas
The quantum Zakharov system is described in terms of a Lagrangian formalism. A time-dependent Gaussian trial function approach for the envelope electric field and the low-frequency part of the density fluctuation leads to a coupled, nonlinear system of ordinary differential equations. In the semicla ... [Phys. Plasmas 14, 042309 (2007)] published Mon Apr 30, 2007.

Orders and dimensions for sl(2) or sl(3) module categories and boundary conformal field theories on a torus

R. Coquereaux and G. Schieber
After giving a short description, in terms of action of categories, of some of the structures associated with sl(2) and sl(3) boundary conformal field theories on a torus, we provide tables of dimensions describing the semisimple and cosemisimple blocks of the corresponding weak bialgebras (quantum ... [J. Math. Phys. 48, 043511 (2007)] published Mon Apr 30, 2007.

Modeling Bose-Einstein correlations via elementary emitting cells

Oleg Utyuzh, Grzegorz Wilk, and Zbigniew Wlodarczyk
We propose a method of numerical modeling Bose-Einstein correlations by using the notion of the elementary emitting cell (EEC). They are intermediary objects containing identical bosons and are supposed to be produced independently during the hadronization process. Only bosons in the EEC, which repr ... [Phys. Rev. D 75, 074030 (2007)] published Mon Apr 30, 2007.

Quantum dust-acoustic double layers

W. M. Moslem, P. K. Shukla, S. Ali, and R. Schlickeiser
The quantum dust-acoustic double layers (QDADLs) are studied in an unmagnetized, collisionless quantum dusty plasma whose constituents are the electrons, ions, and negatively/positively charged dust particles. By employing the quantum hydrodynamical equations and the reductive perturbation technique ... [Phys. Plasmas 14, 042107 (2007)] published Fri Apr 27, 2007.

Dripping of a crystal

R. Ishiguro, F. Graner, E. Rolley, S. Balibar, and J. Eggers
Dripping is usually associated with fluid motion, but here we describe the analogous phenomenon of a [sup 3]He crystal growing and melting under the influence of surface tension and gravity. The pinch-off of the crystal is described by a purely geometric equation of motion, viscous dissipation or in ... [Phys. Rev. E 75, 041606 (2007)] published Fri Apr 27, 2007.

On a q-analog of a Sahi result

Olga Bershtein
We obtain a q-analog of a well-known Sahi result on the joint spectrum of S(GL[sub n] x GL[sub n])-invariant differential operators with polynomial coefficients on the vector space of complex n x n matrices. ... [J. Math. Phys. 48, 043510 (2007)] published Fri Apr 27, 2007.

Entanglement of collectively interacting harmonic chains: An effective two-dimensional system

R. G. Unanyan, M. Fleischhauer, and D. Bruss
We study the ground-state entanglement of one-dimensional harmonic chains that are coupled to each other by a collective interaction as realized, e.g., in an anisotropic ion crystal. Due to the collective type of coupling, where each chain interacts with every other one in the same way, the total sy ... [Phys. Rev. A 75, 040302 (2007)] published Fri Apr 27, 2007.

Collisional energy loss of nonasymptotic jets in a quark-gluon plasma

A. Adil, M. Gyulassy, W. Horowitz, and S. Wicks
We calculate the collisional energy loss suffered by a heavy (charm) quark created at a finite time within a quark-gluon plasma in the classical linear response formalism as in Peigne et al. [J. High Energy Phys. 04 (2006) 011]. We pay close attention to the problem of formulating a suitable current ... [Phys. Rev. C 75, 044906 (2007)] published Fri Apr 27, 2007.

Dimensional Control of Antilocalization and Spin Relaxation in Quantum Wires

S. Kettemann
The weak localization correction to the conductivity of quantum wires with linear Rashba-Dresselhaus spin-orbit coupling is derived analytically as function of wire width W. The spin relaxation rate is found to decrease as W becomes smaller than the spin-precession length L[sub SO]. As a result, the ... [Phys. Rev. Lett. 98, 176808 (2007)] published Fri Apr 27, 2007.

Casimir interaction of two plates inside a cylinder

Valery N. Marachevsky
The new exact formulas for the attractive Casimir force acting on each of the two identical perfectly conducting plates moving freely inside an infinite perfectly conducting cylinder with the same cross section are derived at zero and finite temperatures by making use of the zeta function technique. ... [Phys. Rev. D 75, 085019 (2007)] published Fri Apr 27, 2007.

QCD corrections to neutralino annihilation

Heather E. Logan
We report on two recent calculations of QCD corrections to neutralino annihilation cross sections: (1) the next-to-leading order corrections to chichi --> gg, and (2) the contribution to the cross section for chichi --> qq-bar g arising from interference between the tree-level and loop-induced proce ... [AIP Conf. Proc. 903, 571 (2007)] published Fri Apr 27, 2007.

Holographic Quantum Statistics from Dual Thermodynamics

Csaba Balazs and Istvan Szapudi
We propose dual thermodynamics corresponding to black hole mechanics with the identifications E[prime] --> A/4, S[prime] --> M, and T[prime] --> T[sup 1] in Planck units. Here A, M and T are the horizon area, mass and Hawking temperature of a black hole and E[prime], S[prime] and T[prime] are the en ... [AIP Conf. Proc. 903, 560 (2007)] published Fri Apr 27, 2007.

Modification of Decay Constants of Superstring Axions

Ian-Woo Kim
We study possibilities for lowering the decay constants of superstring axions. In the heterotic string compactification, a localized model-dependent axion can appear at a nearly collapsing 2-cycle. The effect of flux can be used for generating warp factor suppression of the axion decay constant. We ... [AIP Conf. Proc. 903, 525 (2007)] published Fri Apr 27, 2007.

Phenomenological Quantum Gravity

S. Hossenfelder
Planck scale physics represents a future challenge, located between particle physics and general relativity. The Planck scale marks a threshold beyond which the old description of spacetime breaks down and conceptually new phenomena must appear. In the last years, increased efforts have been made to ... [AIP Conf. Proc. 903, 463 (2007)] published Fri Apr 27, 2007.

The SUSY-QCD Coupling Relation

A. Freitas and P. Z. Skands
In order to establish supersymmetry at future colliders, it is not sufficient to discover new particles, but the identity of gauge couplings and the corresponding Yukawa couplings between gauginos, sfermions and fermions needs to be verified. In detailed studies it was found that the SUSY-Yukawa cou ... [AIP Conf. Proc. 903, 249 (2007)] published Fri Apr 27, 2007.

Z + Jets Cross Section Ratio Measurements

Marc Buehler
We present a study of events with Z bosons and jets produced at the Fermilab Tevatron Collider in pp-bar collisions at a center of mass energy of 1.96 TeV. The data sample consists of nearly 14,000 Z/gamma[sup *] --> e[sup +]e[sup ] candidates corresponding to the integrated luminosity of 340 pb[su ... [AIP Conf. Proc. 903, 153 (2007)] published Fri Apr 27, 2007.

The Bonding Forces In Liquid Metals And Ultrasonic Field Action

Luminita Moraru and Gabriel Murariu
The understanding of the liquid metals properties is still imperfect. Assuming that the liquids are isotropic and show some elasticity properties, there are no physical reasons for rejecting the applicability of the fundamental ideas of the Debye theory to the description of the properties of liquid ... [AIP Conf. Proc. 899, 789 (2007)] published Fri Apr 27, 2007.

The Obstruction Free Quantization Based on Weyl Ordering Rule and Poisson Bracket as the Lie Bracket of Quantum Mechanics

Slobodan Prvanović
The algebraic product of quantum mechanics is defined as the ordinary multiplication followed by the application of superoperator that orders the involved operators, with the symmetrization of operators that coincides with the Weyl ordering rule. Using this product, the algebra of observables is int ... [AIP Conf. Proc. 899, 708 (2007)] published Fri Apr 27, 2007.

Physical Fields Described By Maxwell's Equations

Skender Ahmetaj, Ahmet Veseli, and Gani Jashari
Fields that satisfy Maxwell's equations of motion are analyzed. Investigation carried out in this work, shows that the free electromagnetic field, spinor Dirac's field without mass, spinor Dirac's field with mass, and some other fields are described by the same variational formulation. The condition ... [AIP Conf. Proc. 899, 706 (2007)] published Fri Apr 27, 2007.

On the Anomalous Microwave Power Dependency of both Non-Resonant and Cu[sup 2 + ] Resonant Microwave Absorption in a YBa[sub 2]Cu[sub 3]O[sub 7 - delta ] Type Superconductor

M. Velter-Stefanescu and O. G. Duliu
A ceramic high temperature superconductor [HTS] of Y-Ba-Cu-O type has been investigated at 77 K by using a standard X-band Electron Paramagnetic Resonance (EPR) configuration. At very low microwave power (< 1 mW) the non-resonant or zero field signal (ZFS) was in phase with DPPH signal, pleading for ... [AIP Conf. Proc. 899, 668 (2007)] published Fri Apr 27, 2007.

Coherent States and Their Role in Quantum Information Theory

D. Popov, I. Zaharie, V. Sajfert, and D. D. Popov
The qubit, i.e. the fundamental unit of information in the quantum theory of information (QIT), can be expressed through the coherent states (CSs). Consequently, a message, i.e. a sequence of qubits, is a tensor product of CSs. For ensembles of qubits, it must use the density operator (DO), which ca ... [AIP Conf. Proc. 899, 640 (2007)] published Fri Apr 27, 2007.

Quantity Estimation Of The Interactions

Agim Gorana, Partizan Malkaj, and Valbona Muda
In this paper we present some considerations about quantity estimations, regarding the range of interaction and the conservations laws in various types of interactions. Our estimations are done under classical and quantum point of view and have to do with the interaction's carriers, the radius, the ... [AIP Conf. Proc. 899, 503 (2007)] published Fri Apr 27, 2007.

Student Understanding of Some Quantum Physical Concepts: Wave Function, Schr[o-umlaut]dinger's Wave Equation and Wave-Particle Duality

Esra Bilal and Mustafa Erol
This research proposes to investigate understanding/misunderstanding level of undergraduate students on some fundamental quantum physical concepts namely wave function, Schrodinger's wave equation and wave-particle duality by means of conceptual test techniques. The test, developed by the authors, c ... [AIP Conf. Proc. 899, 479 (2007)] published Fri Apr 27, 2007.

Zero Dimensional Field Theory of Tachyon Matter

D. D. Dimitrijevic and G. S. Djordjevic
The first issue about the object (now) called tachyons was published almost one century ago. Even though there is no experimental evidence of tachyons there are several reasons why tachyons are still of interest today, in fact interest in tachyons is increasing. Many string theories have tachyons oc ... [AIP Conf. Proc. 899, 359 (2007)] published Fri Apr 27, 2007.

Covariance, Squeezed and Coherent States: Proposal for Experimental Realization of Covariance States

A. Angelow
Coherent and Squeezed States are widely discussed in literature, but there exist an other class of states (Covariance), minimizing more general inequality [Schrodinger, 1930] then Heisenberg's one. To examine this relation and classify the Covariance, Squeezed and Coherent States, we consider the qu ... [AIP Conf. Proc. 899, 305 (2007)] published Fri Apr 27, 2007.

Correlation Between The Anisotropy and The Effective Mass of The Quasi-Particles in Oxide Superconductors

Ozden Aslan, Zeynep Guven Ozdemir, and Ulker Onbasli
Determination of Josephson penetration depth has a crucial importance in calculation of both anisotropy factor and the effective mass of quasi-particles (m[sup *]) in high temperature copper oxide superconductors. In this study, the effective mass values of the quasi-particles have been determined v ... [AIP Conf. Proc. 899, 271 (2007)] published Fri Apr 27, 2007.

Quantum Supersymmetric Models in the Causal Approach

Dan-Radu Grigore
We consider the massless supersymmetric vector multiplet in a purely quantum framework. First order gauge invariance determines uniquely the interaction Lagrangian as in the case of Yang-Mills models. Going to the second order of perturbation theory produces an anomaly which cannot be eliminated. We ... [AIP Conf. Proc. 899, 197 (2007)] published Fri Apr 27, 2007.

New Developments in Quantum Mechanics and Applications

I. I. Guseinov
The analytical relation is suggested for the centrally symmetric potential which contains the core attraction potential and the potential of the field produced by the particle itself. The eigenfunctions corresponding to this potential are complete without the inclusion of the continuum states. The g ... [AIP Conf. Proc. 899, 65 (2007)] published Fri Apr 27, 2007.

The (1 + 1)-D Duffin-Kemmer-Petiau Equation In A Constant Gravitational Field

A. Kemal Havare, Ali Havare, and Kenan Sogut
In curved space-time, in order to understand how curved space-time affects the dynamics of scalar and spinning particles, we solve the relativistic particles equations in curved space-time. In the present paper our intention is to solve the (1+1) D Duffin-Kemmer-Petiau (DKP) equation in the backgrou ... [AIP Conf. Proc. 899, 147 (2007)] published Fri Apr 27, 2007.

Laser frequency offset locking using electromagnetically induced transparency

S. C. Bell, D. M. Heywood, J. D. White, J. D. Close, and R. E. Scholten
The authors have used an electromagnetically induced transparency resonance in rubidium as a dispersive reference to lock the relative frequency of two lasers to the atomic ground-state hyperfine splitting. The beat frequency between the two lasers directly generates a microwave signal at 3.036 GHz ... [Appl. Phys. Lett. 90, 171120 (2007)] published Fri Apr 27, 2007.

Floppy swimming: Viscous locomotion of actuated elastica

Eric Lauga
Actuating periodically an elastic filament in a viscous liquid generally breaks the constraints of Purcell's scallop theorem, resulting in the generation of a net propulsive force. This observation suggests a method to design simple swimming deviceswhich we call elastic swimmerswhere the actuation m ... [Phys. Rev. E 75, 041916 (2007)] published Thu Apr 26, 2007.

Phase-covariant cloning of coherent states

Massimiliano F. Sacchi
We consider the problem of phase-covariant cloning for coherent states. We show that an experimental scheme based on ideal phase measurement and feedforward outperforms the semiclassical procedure of ideal phase measurement and preparation in terms of fidelity. A realistic scheme where the ideal pha ... [Phys. Rev. A 75, 042328 (2007)] published Thu Apr 26, 2007.

Improving the teleportation of entangled coherent states

H. Prakash, N. Chandra, R. Prakash, and Shivani
We consider the scheme proposed by Wang [Phys. Rev. A [bold 64], 022302 (2001)] for teleporting bipartite entangled states using beam splitters and phase shifters. It is shown that the proposed scheme can be altered slightly so as to obtain an almost perfect teleportation for an appreciable mean num ... [Phys. Rev. A 75, 044305 (2007)] published Thu Apr 26, 2007.

Density matrix of the superposition of excitation on coherent states with thermal light and its statistical properties. (arXiv:0807.1028v1 [quant-ph])

ePrint arXiv http://arXiv.org/

Analysis of Quantum Correlation in Successive Spin Measurements, Classical Communication of Spin $S$ Singlet States and Quantum Nonlocality of two Qubit Entangled States. (arXiv:0807.0723v1 [quant-ph])

ePrint arXiv http://arXiv.org/

Dynamical properties across a quantum phase transition in the Lipkin-Meshkov-Glick model. (arXiv:0807.0703v1 [quant-ph])

ePrint arXiv http://arXiv.org/

Quantum fidelity for Gaussian states describing the evolution of open systems. (arXiv:0807.0695v1 [quant-ph])

ePrint arXiv http://arXiv.org/

Experimental quantum computing without entanglement. (arXiv:0807.0668v1 [quant-ph])

ePrint arXiv http://arXiv.org/

Virtual Processes and Superradiance in Spin-Boson Models. (arXiv:0807.0639v1 [quant-ph])

ePrint arXiv http://arXiv.org/

Quantum fluctuations in the image of a Bose gas. (arXiv:0807.0751v1 [quant-ph])

ePrint arXiv http://arXiv.org/

Polarization-Mixing in Optical Lattices with Uniaxial Anisotropy. (arXiv:0807.0761v1 [quant-ph])

ePrint arXiv http://arXiv.org/

Quantum Jumps Between Macroscopic Quantum States in a Superconducting Qubit. (arXiv:0807.0766v1 [quant-ph])

ePrint arXiv http://arXiv.org/

Accuracy of minimal and optimal qubit tomography for finite-length experiments. (arXiv:0807.0991v1 [quant-ph])

ePrint arXiv http://arXiv.org/

Using squeezed field to preserve two-atom entanglement against spontaneous emissions. (arXiv:0807.0965v1 [quant-ph])

ePrint arXiv http://arXiv.org/

Theory of Raman transitions in cavity QED. (arXiv:0807.0931v1 [quant-ph])

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