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, T-13.
Thursday, August 28, 2008
12:30 PM to 2 PM
Speaker: Steven T. Flammia, Perimeter Institute for Theoretical Physics
Technical Host: Jim Harrington
TOPIC: "One-way quantum computing in the optical frequency comb"
One-way quantum computing allows any quantum algorithm to be
implemented by the sole use of single-qubit measurements. The
difficult part is to create a universal resource state on which the
measurements are made. We propose to use continuous-variable (CV)
entanglement in the optical frequency comb of a single optical
parametric oscillator with a multimode pump to produce a very large
CV graph state with a special 4-regular graph. This scheme is
interesting because of its potential for scalability, meaning that
moderate-sized cluster states are preparable with current
technology. Although issues of error correction and fault tolerance
are yet to be fully addressed, I will discuss some schemes for
discretizing the quantum information, and for proving a fault- tolerant threshold exists. Joint work with N. Menicucci and O. Pfister.