3 papers
quant-ph2001
An ultra-sensitive pulsed balanced homodyne detector: Application to time-domain quantum measurements
H. Hansen, T. Aichele, C. Hettich +4
A pulsed balanced homodyne detector has been developed for precise measurements of electric field quadratures of pulsed optical quantum states. A high level of common mode suppress…
quant-ph2001
Quantum state reconstruction of the single-photon Fock state
A. I. Lvovsky, H. Hansen, T. Aichele +3
We have reconstructed the quantum state of optical pulses containing single photons using the method of phase-randomized pulsed optical homodyne tomography. The single-photon Fock…
quant-ph2000
Conditional quantum state engineering in repeated 2-photon down conversion
J. Clausen, H. Hansen, L. Knoll +2
The U(1,1) and U(2) transformations realized by three-mode interaction in the respective parametric approximations are studied in conditional measurement, and the corresponding non…