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.
For more information, contact Diego Dalvit.
January 13 , 2006
Universita' "La Sapienza" Roma, Italy
Realization of a Decoherence-free Mesoscopic Quantum Superposition
We report the realization of an entangled quantum superposition of about 100 photons by multiple cloning of a single qubit via a high gain quantum-injected optical parametric oscillator. By quantum tomographic methods the conditions of non-separability and quantum superposition are investigated for the mesoscopic output state of a dynamic "closed system". Fringing patterns with large visibility of the quantum interference are obtained at room temperature. The system appear to fully realize the condition conceived in 1935 by Erwin Schroedinger by his paradigmatic "Cat" apologue, a fundamental quantum mechanical landmark.