Arts & Sciences Events
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Arts & Sciences
[PAST EVENT] Physics Colloquium
November 22, 2013
4pm - 5pm
Abstract:
The race to build a practical quantum computer demands that one address the challenges of decoherence and scalability. I present our nonincremental progress toward the latter. In 2004, our group proposed to use the vast set of resonant eigenmodes of an optical cavity (a.k.a. the quantum optical frequency comb) as the many Qbits (or, rather, Qmodes) of a quantum computing register. Since then, we have proven theoretically that an optical parametric oscillator (OPO, an optical cavity containing a dispersive two-photon-emitting medium) can be used to generate large-scale multipartite entanglement. I will present our recent measurement of a 60-Qmode cluster state in a single OPO, which constitutes a world record in quantum state preparation for quantum computing.
The race to build a practical quantum computer demands that one address the challenges of decoherence and scalability. I present our nonincremental progress toward the latter. In 2004, our group proposed to use the vast set of resonant eigenmodes of an optical cavity (a.k.a. the quantum optical frequency comb) as the many Qbits (or, rather, Qmodes) of a quantum computing register. Since then, we have proven theoretically that an optical parametric oscillator (OPO, an optical cavity containing a dispersive two-photon-emitting medium) can be used to generate large-scale multipartite entanglement. I will present our recent measurement of a 60-Qmode cluster state in a single OPO, which constitutes a world record in quantum state preparation for quantum computing.