Hannover 2013 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 19: Quantum information: Quantum computers

Q 19.4: Vortrag

Montag, 18. März 2013, 17:30–17:45, E 214

Precisely timing dissipative quantum information processing — •Michael Kastoryano¹, Jens Eisert¹, and Michael Wolf² — ¹FU Berlin — ²TU München

Dissipative engineering constitutes a framework within which quantum information processing protocols are powered by system-environment interaction rather than by unitary dynamics alone. This framework embraces noise as a resource, and consequently, offers a number of advantages compared to one based on unitary dynamics alone, e.g., that the protocols are typically independent of the initial state of the system. However, the time in- dependent nature of this scheme makes it difficult to imagine precisely timed sequential operations, conditional measurements or error correction. In this work, we provide a path around these challenges, by introducing basic dissipative gadgets which allow us to precisely initiate, trigger and time dissipative operations, while keeping the system Liouvillian time-independent. These gadgets open up novel perspectives for thinking of timed dis- sipative quantum information processing. As an example, we sketch how measurement based computation can be simulated in the dissipative setting.