According to quantum theory the energy exchange between physical systems is quantized.
As a direct consequence, measurement sensitivities are fundamentally limited by …

This Colloquium examines the field of the Einstein, Podolsky, and Rosen (EPR) gedanken
experiment, from the original paper of Einstein, Podolsky, and Rosen, through to modern …

Quantum metrology is one of the most promising applications of quantum technologies. The
aim of this research field is the estimation of unknown parameters exploiting quantum …

Two beams of light can be quantum mechanically entangled through correlations of their
phase and intensity fluctuations. For a pair of spatially extended image-carrying light fields …

Unique in that it is jointly written by an experimentalist and a theorist, this monograph
presents universal quantum computation based on quantum teleportation as an elementary …

The Dirac Hamiltonian, which successfully describes relativistic fermions, applies equally
well to electrons in solids with linear energy dispersion, for example, in bismuth and …

We present the full experimental reconstruction of Gaussian entangled states generated by
a type-II optical parametric oscillator below threshold. Our scheme provides the entire …

Entangled states of light including low-loss optical fiber transmission and atomic resonance
frequencies are essential resources for future quantum information networks. We present the …

We study the possibility of producing and detecting continuous variable cluster states in an
extremely compact optical setup. This method is based on a multi-pixel homodyne detection …

We measured the covariance matrix of the fields generated in an integrated third-order
optical parametric oscillator operating above threshold. We observed up to (2.3?±? 0.3) dB …