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26 April 2024 |
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Article overview
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Adding control to arbitrary quantum operations | | Xiao-Qi Zhou
; Timothy C. Ralph
; Pruet Kalasuwan
; Mian Zhang
; Alberto Peruzzo
; Benjamin P. Lanyon
; Jeremy L. O'Brien
; | | Date: |
14 Jun 2010 | | Abstract: | Quantum computers promise exponential power for particular tasks, however,
the complexity of quantum algorithms remains a major technological challenge.
We have developed and demonstrated an architecture independent technique for
adding control qubits to arbitrary quantum operations (unitary or otherwise) -
a key requirement in many quantum algorithms. The technique is independent of
how the operation is done and does not even require knowledge of what the
operation is. In this way the technical problems of how to implement a quantum
operation and how to add a control are separated. The number of computational
resources required is independent of the depth of the operation and increases
only linearly with the number of qubits on which it acts. Our approach will
significantly reduce the complexity of quantum computations such as Shor’s
factoring algorithm and the near-term prospect of quantum simulations. We use
this new approach to implement a number of two-qubit photonic quantum gates in
which the operation of the control circuit is completed independent of the
choice of quantum operation. | | Source: | arXiv, 1006.2670 | | Services: | Forum | Review | PDF | Favorites | |
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