In general: Quantum Information Theory, Quantum Optics, Nonlinear Fiber Optics,
Classical and Quantum Theory of Optical Solitons.
In particular: Quantum Information Processing using Linear
Optics, Quantum Communication Protocols and Entanglement for Continuous Variables.

- study of physics at the University of Erlangen-Nuremberg; diploma there in 1997;
diploma thesis on the Theory of Quantum Non-Demolition Measurements
with Optical Solitons. 
- 1998: Ph.D student in the Quantum Optics and Information
group of Prof. Samuel Braunstein at the University of Wales, Bangor/United
Kingdom; Ph.D thesis on Quantum Communication with Continuous
Variables in 2001. 

- September 2001 - December 2003: postdoc in the Quantum Information Theory Group
of Dr. Norbert Luetkenhaus at the University of Erlangen-Nuremberg.
- Since February 2004: Research Fellow at NII.

1. P.v.L. and Samuel L. Braunstein, Multipartite entanglement for continuous
   variables: A quantum teleportation network, Physical Review Letters 84, 3482 (2000);
   Los Alamos archive: quant-ph/990602

2. P.v.L. and Samuel L. Braunstein, Telecloning of continuous quantum variables,
   Physical Review Letters 87, 247901 (2001);
   Los Alamos archive: quant-ph/0012063

3. P.v.L., Quantum communication with continuous variables,
   Fortschr. Phys. 50, No.12, 1177 (2002)

4. P.v.L. and Akira Furusawa, Detecting genuine multipartite continuous-variable entanglement,
   Physical Review A 67, 052315 (2003);
   Los Alamos archive: quant-ph/0212052

5. Takao Aoki, Nobuyuki Takei, Hidehiro Yonezawa, Kentaro Wakui, Takuji
   Hiraoka, Akira Furusawa, and P.v.L., Experimental Creation of a
   fully inseparable tripartite continuous-variable state,
   Physical Review Letters 91, 080404 (2003);
   Los Alamos archive: quant-ph/0304053

6. P.v.L. and Norbert Luetkenhaus, 
   Simple criteria for the implementation of projective measurements with linear optics,
   Physical Review A 69, 012302 (2004);
   Los Alamos archive: quant-ph/0304057