Interaction-free quantum computation
| dc.creator | Azuma, Hiroo | |
| dc.date | 2004-03-23 | |
| dc.date.accessioned | 2026-07-07T06:09:21Z | |
| dc.date.available | 2026-07-07T06:09:21Z | |
| dc.description | In this paper, we study the quantum computation realized by an interaction-free measurement (IFM). Using Kwiat et al.'s interferometer, we construct a two-qubit quantum gate that changes one particle's trajectory according to whether or not the other particle exists in the interferometer. We propose a method for distinguishing Bell-basis vectors, each of which consists of a pair of an electron and a positron, by this gate. (This is called the Bell-basis measurement.) This method succeeds with probability 1 in the limit of $N \to \infty$, where N is the number of beam splitters in the interferometer. Moreover, we can carry out a controlled-NOT gate operation by the above Bell-basis measurement and the method proposed by Gottesman and Chuang. Therefore, we can prepare a universal set of quantum gates by the IFM. This means that we can execute any quantum algorithm by the IFM. | |
| dc.description | 11 pages, 7 figures, LaTex2e | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0403159 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0403159 | |
| dc.identifier | Phys. Rev. A 70, 012318 (2004) | |
| dc.identifier | doi:10.1103/PhysRevA.70.012318 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/91932 | |
| dc.subject | Quantum Physics | |
| dc.title | Interaction-free quantum computation | |
| dc.type | text |