output
19922026
most citedObservation of Gravitational Waves from a Binary Black Hole Merger

14.2k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 2009 · quant-phShow all

11 papers · 2 filters

quant-ph2009★ 68 cited

Quantum states made to measure

Konrad Banaszek, Rafal Demkowicz-Dobrzanski, Ian A. Walmsley

Recent progress in manipulating quantum states of light and matter brings quantum-enhanced measurements closer to prospective applications. The current challenge is to make quantum…

quant-ph2009★ 14 cited

Multi-pass classical vs. quantum strategies in lossy phase estimation

Rafal Demkowicz-Dobrzanski

The use of classical multiple-pass approach for phase estimation which mimics the behavior of the N00N states, is compared with quantum techniques. It is shown that in the presence…

quant-ph2009★ 6 cited

Multimode Spontaneous Parametric Down-Conversion in the Lossy Medium

Radoslaw Chrapkiewicz, Wojciech Wasilewski

We study the process of multimode Spontaneous Parametric Down--Conversion (SPDC) in the lossy, one dimensional waveguide. We propose a description using first order Correlation Fun…

quant-ph2009★ 3 cited

Quantum and semiclassical polarization correlations

Konrad Banaszek, Rafal Demkowicz-Dobrzanski, Michal Karpinski +2

We analyze the strength of polarization correlations between two light beams that can be achieved in the semiclassical regime using statistical mixtures of coherent states and bina…

quant-ph2009★ 262 cited

Experimental quantum-enhanced estimation of a lossy phase shift

M. Kacprowicz, R. Demkowicz-Dobrzanski, W. Wasilewski +2

When standard light sources are employed, the precision of the phase determination is limited by the shot noise. Quantum entanglement provides means to exceed this limit with the c…

quant-ph2009★ 101 cited

Atom-ion quantum gate

Hauke Doerk-Bendig, Zbigniew Idziaszek, Tommaso Calarco

We study ultracold collisions of ions with neutral atoms in traps. Recently, ultracold atom-ion systems are becoming available in experimental setups, where their quantum states ca…

quant-ph2009★ 15 cited

Quantum computation via measurements on the low-temperature state of a many-body system

David Jennings, Andrzej Dragan, Sean D. Barrett +2

We consider measurement-based quantum computation using the state of a spin-lattice system in equilibrium with a thermal bath and free to evolve under its own Hamiltonian. Any sing…

quant-ph2009★ 52 cited

Modelling and optimization of photon pair sources based on spontaneous parametric down-conversion

Piotr Kolenderski, Wojciech Wasilewski, Konrad Banaszek

We address the problem of efficient modelling of photon pairs generated in spontaneous parametric down-conversion and coupled into single-mode fibers. It is shown that when the ran…

quant-ph2009★ 10 cited

Density matrix of a single photon produced in parametric down conversion derived

Piotr Kolenderski, Wojciech Wasilewski

We introduce an effective numerical method of density matrix determination of fiber coupled single photon generated in process of spontaneous parametric down conversion in type I n…

quant-ph2009★ 38 cited

Experimental characterization of three-wave mixing in a multimode nonlinear KTiOPO_4 waveguide

Michal Karpinski, Czeslaw Radzewicz, Konrad Banaszek

We report experimental determination of the phase-matching function for type-II three-wave mixing in a periodically poled KTiOPO_4 waveguide in the 792-815 nm spectral region. The…

quant-ph2009★ 319 cited

Quantum phase estimation with lossy interferometers

R. Demkowicz-Dobrzanski, U. Dorner, B. J. Smith +4

We give a detailed discussion of optimal quantum states for optical two-mode interferometry in the presence of photon losses. We derive analytical formulae for the precision of pha…