Results 31 to 40 of about 1,109 (45)
Physical qubits from charged particles: IR divergences in quantum information [PDF]
, 2009 We consider soft photons effects (IR structure of QED) on the construction of physical qubits. Soft-photons appear when we build charged qubits from the asymptotic states of QED.
Eduardo Martín-Martínez +4 more
core +2 more sources
Deterministically entangling distant nitrogen-vacancy centers by a nanomechanical cantilever
, 2009 We present a practical scheme by global addressing to deterministically entangle negatively charged nitrogen-vacancy (N-V) centers in distant diamonds using a nano-mechanical cantilever with the magnetic tips strongly coupled to the N-V electron spins ...
G. Kaupp +5 more
core +1 more source
Tunneling Effects on Fine-Structure Splitting in Quantum Dot Molecules [PDF]
, 2009 We theoretically study the effects of bias-controlled interdot tunneling in vertically coupled quantum dots on the emission properties of spin excitons in various bias-controlled tunneling regimes.
F. Vasko +2 more
core +1 more source
Continuous variable entanglement in open quantum dynamics
, 2010 In the framework of the theory of open systems based on completely positive quantum dynamical semigroups, we give a description of the dynamics of entanglement for a system consisting of two uncoupled harmonic oscillators interacting with a thermal ...
Isar, Aurelian
core +1 more source
Experimental achievement of the entanglement assisted capacity for the depolarizing channel
, 2012 We experimentally demonstrate the achievement of the entanglement assisted capacity for classical information transmission over a depolarizing channel. The implementation is based on the generation and local manipulation of 2-qubit Bell states, which are
Andrea Chiuri +5 more
core +1 more source
Ultrabright Backward-wave Biphoton Source
, 2011 We calculate the properties of a biphoton source based on resonant backward-wave spontaneous parametric down-conversion. We show that the biphotons are generated in a single longitudinal mode having a subnatural linewidth and a Glauber correlation time ...
A. Yariv, Chih-Sung Chuu, S. E. Harris
core +1 more source
Entanglement evolution in a cascaded system with losses
, 2009 The dynamics of a cascaded system that consists of two atom-cavity subsystems is studied by using the quantum trajectory method. Unwanted losses are included, such as photon absorption and scattering by the cavity mirrors and spontaneous emission of the ...
Allahverdyan +23 more
core +1 more source
Generation of Narrow-Band Polarization-Entangled Photon Pairs for Atomic Quantum Memories
, 2008 We report an experimental realization of a narrow-band polarization-entangled photon source with a linewidth of 9.6 MHz through cavity-enhanced spontaneous parametric down-conversion.
Bao, Xiao-Hui +6 more
core +1 more source
Generating EPR beams in a cavity optomechanical system
, 2009 We propose a scheme to produce continuous variable entanglement between phase-quadrature amplitudes of two light modes in an optomechanical system. For proper driving power and detuning, the entanglement is insensitive with bath temperature and $Q$ of ...
D. F. Walls, Y.-J. Han, Zhang-qi Yin
core +1 more source
Single-Atom Addressing in Microtraps for Quantum-State Engineering using Rydberg Atoms
, 2014 We report on the selective addressing of an individual atom in a pair of single-atom microtraps separated by $3\;\mu$m. Using a tunable light-shift, we render the selected atom off-resonant with a global Rydberg excitation laser which is resonant with ...
Barredo, Daniel +6 more
core +4 more sources