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In general, using quantum optics as a tool, experimentally and theoretically, fundamental and applied, we are interested in probing the foundations of physics, especially the study of fundamental problems of quantum theory and general relativity.
Recent Research Summary
(1) The entangled two-photon states of Spontaneous Parametric Down Conversion (SPDC) have historically been one of the main subjects of investigation of the Quantum Optics Laboratory at UMBC. The tight research collaboration between experiment and theory has led over the years to a better understanding of the physics behind entangled photon pairs in term of the so-called
biphoton wavepacket, or two-photon effective wavefunction. It is not quite correct to describe the pair of photons (signal and idler) from SPDC as individual entities, but their behavior is better pictured as a single composite system, a nonlocal 2-D wavepacket. Even if the two photons are propagated far away from each other the pair still retain a strong correlation and do not cease to be described by two independent wavepackets. This is why we say “2 != 1+1” in our publications.
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Quantum Optics Group
