Adolfo del Campo
Quantum Lunch Location:
T-Division Conference Room, TA-3,
Building 123, Room 121
Quantum Institute: Visitor Schedule
The Quantum Lunch is regularly held on Thursdays in the Theoretical Division Conference Room, TA-3, Building 123, Room 121.
The organizing committee includes Malcolm Boshier (P-21), Adolfo del Campo (T-4 & CNLS), Michael D. Di Rosa (C-PCS), Armin Rahmanisisan (T-4 & CNLS), Changhyun Ryu (P-21) , Nikolai Sinitsyn (T-4), Rolando Somma (T-4), Christopher Ticknor (T-1), and Wojciech Zurek (T-4).
For more information, or to nominate a speaker, contact Adolfo del Campo.
To add your name to the Quantum Lunch email list, contact Ellie Vigil.
Monday March 31, 2014
12:30 PM - 2:00 PM
Speaker: Ralf Menzel (Potsdam University, Germany )
Technical Host: Peter Milonni
TOPIC: Single photon interference experiments providing new insights into wave-particle relationship
Detailed investigations of single photon interferences of separated emitters allow for analyzing the role of the mode function in quantum optics.
Using two crystals for spontaneous parametric down conversion (SPDC) in a cascaded arrangement coherence can be realized across both single photon emitting crystals including an induced coherence channel. Using a three crystal setup "which-path" information of the interfering photons becomes available. It turns out that complementarity is realized via the quantum behavior of the modes .
In another approach coherent higher order modes were used for SPDC. Using e.g. single-signal-photons in a TEM 01 – like mode provided interference fringes behind a Young's double slit with high fringe visibility while the "which-slit" information seemed to be available from measuring the correlated idler photons in coincidence, simultaneously.