Correlating Space and Time

“The method we have proposed,” says Evgeny Shchukin, “is an extension of the well-known balanced homodyning scheme.” However, unlike the standard scheme used for measuring radiation fields, the scheme developed by Shchukin and his professor, Werner Vogel, allows measurement of all normally ordered correlation functions. Their proposal, “Universal Measurement of Quantum Correlations of Radiation,” was published by Physical Review Letters on May 22nd.