Storing quantum dynamics in quantum states: stochastic programmable gate for U(1) operations

Details Storing quantum dynamics in quantum states: stochastic programmable gate for U(1) operations Storing quantum dynamics in quantum states: stochastic programmable gate for U(1) operations

2001-02-06

arxiv.org/abs/quant-ph/0102037v1

Phys. Rev. Lett. 88, 047905 (2002)

Physics

Quantum Physics

RevTex, 4 pages, 3 figures. Extension of quant-ph/0012067, including several results concerning optimality of the scheme for s

Scientific paper

10.1103/PhysRevLett.88.047905

We show how quantum dynamics can be captured in the state of a quantum system, in such a way that the system can be used to stochastically perform, at a later time, the stored transformation perfectly on some other quantum system. Thus programmable quantum gates for quantum information processing are feasible if some probability of failure -that we show to decrease exponentially with the size of the storing resources- is allowed.

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